From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-block@vger.kernel.org
Cc: axboe@kernel.dk, Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Subject: [PATCH 0/9] loop: small clenaup
Date: Tue, 22 Jun 2021 16:19:42 -0700 [thread overview]
Message-ID: <20210622231952.5625-1-chaitanya.kulkarni@wdc.com> (raw)
Hi,
This has few improvment and cleanups such as using sysfs_emit() for the
sysfs dev attributes and removing variables that are only used once and
a cleanup with fixing declaration.
Below is the test log where 10 loop devices created, each deivce is
linked to it's own file in /tmp/loopX, formatted with xfs and mounted on
/mnt/loopX. For each device it reads the offset, sizelimit, autoclear,
partscan, and dio attr from sysfs using cat command, then it runs fio
verify job on it.
In summary write-verify fio job seems to work fine :-
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17434: Tue Jun 22 01:19:46 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17480: Tue Jun 22 01:20:44 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17580: Tue Jun 22 01:21:53 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17630: Tue Jun 22 01:23:07 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17680: Tue Jun 22 01:24:20 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17792: Tue Jun 22 01:25:31 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17949: Tue Jun 22 01:26:50 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18028: Tue Jun 22 01:28:01 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18179: Tue Jun 22 01:29:12 2021
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18300: Tue Jun 22 01:30:15 2021
-ck
Chaitanya Kulkarni (9):
loop: use sysfs_emit() in the sysfs offset show
loop: use sysfs_emit() in the sysfs sizelimit show
loop: use sysfs_emit() in the sysfs autoclear show
loop: use sysfs_emit() in the sysfs partscan show
loop: use sysfs_emit() in the sysfs dio show
loop: remove extra variable in lo_fallocate()
loop: remove extra variable in lo_req_flush
loop: remove the extra line in declaration
loop: allow user to set the queue depth
drivers/block/loop.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
# gitlog -9
79bae3edbc3e (HEAD -> for-next) loop: allow user to set the queue depth
bc711b2d44a7 loop: remove the extra line in declaration
7c871452de8c loop: remove extra variable in lo_req_flush
cb228a9f1d68 loop: remove extra variable in lo_fallocate()
325aab6e5d65 loop: use sysfs_emit() in the sysfs dio show
6817f2e8e765 loop: use sysfs_emit() in the sysfs partscan show
a96444f66e15 loop: use sysfs_emit() in the sysfs autoclear show
56cfb89c1644 loop: use sysfs_emit() in the sysfs sizelimit show
2c6c098456c2 loop: use sysfs_emit() in the sysfs offset show
# ./test_loop.sh 10
+ FILE=/tmp/loop
+ LOOP_MNT=/mnt/loop
+ NN=10
+ unload_loop
++ shuf -i 1-10 -n 10
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop3
umount: /mnt/loop3: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop6
umount: /mnt/loop6: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop7
umount: /mnt/loop7: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop10
umount: /mnt/loop10: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop1
umount: /mnt/loop1: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop4
umount: /mnt/loop4: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop9
umount: /mnt/loop9: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop2
umount: /mnt/loop2: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop8
umount: /mnt/loop8: mountpoint not found
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop5
umount: /mnt/loop5: mountpoint not found
+ losetup -D
+ sleep 3
+ rmmod loop
rmmod: ERROR: Module loop is not currently loaded
+ modprobe -r loop
+ lsmod
+ grep loop
+ rm -fr '/mnt/loop*'
+ compile_loop
++ nproc
+ make -j 64 M=drivers/block modules
+ HOST=drivers/block/
++ uname -r
+ HOST_DEST=/lib/modules/5.13.0-rc6blk+/kernel/drivers/block
+ cp drivers/block//loop.ko /lib/modules/5.13.0-rc6blk+/kernel/drivers/block/
+ load_loop
+ insmod drivers/block/loop.ko max_loop=11 hw_queue_depth=256
++ shuf -i 1-10 -n 10
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop3
+ truncate -s 2048M /tmp/loop3
+ /root/util-linux/losetup --direct-io=on /dev/loop3 /tmp/loop3
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop3
Discarding blocks...Done.
meta-data=/dev/loop3 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop3 /mnt/loop3
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop3/loop/offset : '
cat /sys/block/loop3/loop/offset : + cat /sys/block/loop3/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop3/loop/sizelimit : '
cat /sys/block/loop3/loop/sizelimit : + cat /sys/block/loop3/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop3/loop/autoclear : '
cat /sys/block/loop3/loop/autoclear : + cat /sys/block/loop3/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop3/loop/partscan : '
cat /sys/block/loop3/loop/partscan : + cat /sys/block/loop3/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop3/loop/dio : '
cat /sys/block/loop3/loop/dio : + cat /sys/block/loop3/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop4
+ truncate -s 2048M /tmp/loop4
+ /root/util-linux/losetup --direct-io=on /dev/loop4 /tmp/loop4
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop4
Discarding blocks...Done.
meta-data=/dev/loop4 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop4 /mnt/loop4
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop4/loop/offset : '
cat /sys/block/loop4/loop/offset : + cat /sys/block/loop4/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop4/loop/sizelimit : '
cat /sys/block/loop4/loop/sizelimit : + cat /sys/block/loop4/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop4/loop/autoclear : '
cat /sys/block/loop4/loop/autoclear : + cat /sys/block/loop4/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop4/loop/partscan : '
cat /sys/block/loop4/loop/partscan : + cat /sys/block/loop4/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop4/loop/dio : '
cat /sys/block/loop4/loop/dio : + cat /sys/block/loop4/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop6
+ truncate -s 2048M /tmp/loop6
+ /root/util-linux/losetup --direct-io=on /dev/loop6 /tmp/loop6
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop6
Discarding blocks...Done.
meta-data=/dev/loop6 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop6 /mnt/loop6
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop6/loop/offset : '
cat /sys/block/loop6/loop/offset : + cat /sys/block/loop6/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop6/loop/sizelimit : '
cat /sys/block/loop6/loop/sizelimit : + cat /sys/block/loop6/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop6/loop/autoclear : '
cat /sys/block/loop6/loop/autoclear : + cat /sys/block/loop6/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop6/loop/partscan : '
cat /sys/block/loop6/loop/partscan : + cat /sys/block/loop6/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop6/loop/dio : '
cat /sys/block/loop6/loop/dio : + cat /sys/block/loop6/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop2
+ truncate -s 2048M /tmp/loop2
+ /root/util-linux/losetup --direct-io=on /dev/loop2 /tmp/loop2
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop2
Discarding blocks...Done.
meta-data=/dev/loop2 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop2 /mnt/loop2
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop2/loop/offset : '
cat /sys/block/loop2/loop/offset : + cat /sys/block/loop2/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop2/loop/sizelimit : '
cat /sys/block/loop2/loop/sizelimit : + cat /sys/block/loop2/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop2/loop/autoclear : '
cat /sys/block/loop2/loop/autoclear : + cat /sys/block/loop2/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop2/loop/partscan : '
cat /sys/block/loop2/loop/partscan : + cat /sys/block/loop2/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop2/loop/dio : '
cat /sys/block/loop2/loop/dio : + cat /sys/block/loop2/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop7
+ truncate -s 2048M /tmp/loop7
+ /root/util-linux/losetup --direct-io=on /dev/loop7 /tmp/loop7
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop7
Discarding blocks...Done.
meta-data=/dev/loop7 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop7 /mnt/loop7
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop7/loop/offset : '
cat /sys/block/loop7/loop/offset : + cat /sys/block/loop7/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop7/loop/sizelimit : '
cat /sys/block/loop7/loop/sizelimit : + cat /sys/block/loop7/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop7/loop/autoclear : '
cat /sys/block/loop7/loop/autoclear : + cat /sys/block/loop7/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop7/loop/partscan : '
cat /sys/block/loop7/loop/partscan : + cat /sys/block/loop7/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop7/loop/dio : '
cat /sys/block/loop7/loop/dio : + cat /sys/block/loop7/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop8
+ truncate -s 2048M /tmp/loop8
+ /root/util-linux/losetup --direct-io=on /dev/loop8 /tmp/loop8
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop8 0 0 0 0 /tmp/loop8 1 512
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop8
Discarding blocks...Done.
meta-data=/dev/loop8 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop8 /mnt/loop8
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop8/loop/offset : '
cat /sys/block/loop8/loop/offset : + cat /sys/block/loop8/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop8/loop/sizelimit : '
cat /sys/block/loop8/loop/sizelimit : + cat /sys/block/loop8/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop8/loop/autoclear : '
cat /sys/block/loop8/loop/autoclear : + cat /sys/block/loop8/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop8/loop/partscan : '
cat /sys/block/loop8/loop/partscan : + cat /sys/block/loop8/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop8/loop/dio : '
cat /sys/block/loop8/loop/dio : + cat /sys/block/loop8/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop9
+ truncate -s 2048M /tmp/loop9
+ /root/util-linux/losetup --direct-io=on /dev/loop9 /tmp/loop9
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop8 0 0 0 0 /tmp/loop8 1 512
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop9 0 0 0 0 /tmp/loop9 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop9
Discarding blocks...Done.
meta-data=/dev/loop9 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop9 /mnt/loop9
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop9/loop/offset : '
cat /sys/block/loop9/loop/offset : + cat /sys/block/loop9/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop9/loop/sizelimit : '
cat /sys/block/loop9/loop/sizelimit : + cat /sys/block/loop9/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop9/loop/autoclear : '
cat /sys/block/loop9/loop/autoclear : + cat /sys/block/loop9/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop9/loop/partscan : '
cat /sys/block/loop9/loop/partscan : + cat /sys/block/loop9/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop9/loop/dio : '
cat /sys/block/loop9/loop/dio : + cat /sys/block/loop9/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop5
+ truncate -s 2048M /tmp/loop5
+ /root/util-linux/losetup --direct-io=on /dev/loop5 /tmp/loop5
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop8 0 0 0 0 /tmp/loop8 1 512
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop9 0 0 0 0 /tmp/loop9 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop5 0 0 0 0 /tmp/loop5 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop5
Discarding blocks...Done.
meta-data=/dev/loop5 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop5 /mnt/loop5
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop5/loop/offset : '
cat /sys/block/loop5/loop/offset : + cat /sys/block/loop5/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop5/loop/sizelimit : '
cat /sys/block/loop5/loop/sizelimit : + cat /sys/block/loop5/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop5/loop/autoclear : '
cat /sys/block/loop5/loop/autoclear : + cat /sys/block/loop5/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop5/loop/partscan : '
cat /sys/block/loop5/loop/partscan : + cat /sys/block/loop5/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop5/loop/dio : '
cat /sys/block/loop5/loop/dio : + cat /sys/block/loop5/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop1
+ truncate -s 2048M /tmp/loop1
+ /root/util-linux/losetup --direct-io=on /dev/loop1 /tmp/loop1
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop1 0 0 0 0 /tmp/loop1 1 512
/dev/loop8 0 0 0 0 /tmp/loop8 1 512
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop9 0 0 0 0 /tmp/loop9 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop5 0 0 0 0 /tmp/loop5 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop1
Discarding blocks...Done.
meta-data=/dev/loop1 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop1 /mnt/loop1
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop1/loop/offset : '
cat /sys/block/loop1/loop/offset : + cat /sys/block/loop1/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop1/loop/sizelimit : '
cat /sys/block/loop1/loop/sizelimit : + cat /sys/block/loop1/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop1/loop/autoclear : '
cat /sys/block/loop1/loop/autoclear : + cat /sys/block/loop1/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop1/loop/partscan : '
cat /sys/block/loop1/loop/partscan : + cat /sys/block/loop1/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop1/loop/dio : '
cat /sys/block/loop1/loop/dio : + cat /sys/block/loop1/loop/dio
1
+ for i in '`shuf -i 1-$NN -n $NN`'
+ mkdir -p /mnt/loop10
+ truncate -s 2048M /tmp/loop10
+ /root/util-linux/losetup --direct-io=on /dev/loop10 /tmp/loop10
+ /root/util-linux/losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop1 0 0 0 0 /tmp/loop1 1 512
/dev/loop8 0 0 0 0 /tmp/loop8 1 512
/dev/loop6 0 0 0 0 /tmp/loop6 1 512
/dev/loop4 0 0 0 0 /tmp/loop4 1 512
/dev/loop2 0 0 0 0 /tmp/loop2 1 512
/dev/loop9 0 0 0 0 /tmp/loop9 1 512
/dev/loop7 0 0 0 0 /tmp/loop7 1 512
/dev/loop5 0 0 0 0 /tmp/loop5 1 512
/dev/loop3 0 0 0 0 /tmp/loop3 1 512
/dev/loop10 0 0 0 0 /tmp/loop10 1 512
+ sleep 1
+ mkfs.xfs -f /dev/loop10
Discarding blocks...Done.
meta-data=/dev/loop10 isize=512 agcount=4, agsize=131072 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=524288, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ mount /dev/loop10 /mnt/loop10
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop10/loop/offset : '
cat /sys/block/loop10/loop/offset : + cat /sys/block/loop10/loop/offset
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop10/loop/sizelimit : '
cat /sys/block/loop10/loop/sizelimit : + cat /sys/block/loop10/loop/sizelimit
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop10/loop/autoclear : '
cat /sys/block/loop10/loop/autoclear : + cat /sys/block/loop10/loop/autoclear
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop10/loop/partscan : '
cat /sys/block/loop10/loop/partscan : + cat /sys/block/loop10/loop/partscan
0
+ for attr in offset sizelimit autoclear partscan dio
+ echo -n 'cat /sys/block/loop10/loop/dio : '
cat /sys/block/loop10/loop/dio : + cat /sys/block/loop10/loop/dio
1
+ mount
+ grep loop
/dev/loop3 on /mnt/loop3 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop4 on /mnt/loop4 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop6 on /mnt/loop6 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop2 on /mnt/loop2 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop7 on /mnt/loop7 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop8 on /mnt/loop8 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop9 on /mnt/loop9 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop5 on /mnt/loop5 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop1 on /mnt/loop1 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/loop10 on /mnt/loop10 type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
+ dmesg -c
[ 4861.197941] XFS (loop5): Unmounting Filesystem
[ 4863.459901] XFS (loop9): Unmounting Filesystem
[ 4864.045881] XFS (loop7): Unmounting Filesystem
[ 4864.434878] XFS (loop4): Unmounting Filesystem
[ 4864.744874] XFS (loop2): Unmounting Filesystem
[ 4865.086875] XFS (loop8): Unmounting Filesystem
[ 4865.552881] XFS (loop10): Unmounting Filesystem
[ 4865.857916] XFS (loop1): Unmounting Filesystem
[ 4867.370924] XFS (loop3): Unmounting Filesystem
[ 4867.726864] XFS (loop6): Unmounting Filesystem
[ 4887.878685] loop: module loaded
[ 4887.949970] loop3: detected capacity change from 0 to 4194304
[ 4889.963104] XFS (loop3): Mounting V5 Filesystem
[ 4889.975494] XFS (loop3): Ending clean mount
[ 4889.975702] xfs filesystem being mounted at /mnt/loop3 supports timestamps until 2038 (0x7fffffff)
[ 4890.059469] loop4: detected capacity change from 0 to 4194304
[ 4897.521788] XFS (loop4): Mounting V5 Filesystem
[ 4897.537420] XFS (loop4): Ending clean mount
[ 4897.537587] xfs filesystem being mounted at /mnt/loop4 supports timestamps until 2038 (0x7fffffff)
[ 4897.622681] loop6: detected capacity change from 0 to 4194304
[ 4899.359934] XFS (loop6): Mounting V5 Filesystem
[ 4899.372093] XFS (loop6): Ending clean mount
[ 4899.372236] xfs filesystem being mounted at /mnt/loop6 supports timestamps until 2038 (0x7fffffff)
[ 4899.463029] loop2: detected capacity change from 0 to 4194304
[ 4902.203624] XFS (loop2): Mounting V5 Filesystem
[ 4902.216891] XFS (loop2): Ending clean mount
[ 4902.217060] xfs filesystem being mounted at /mnt/loop2 supports timestamps until 2038 (0x7fffffff)
[ 4902.303834] loop7: detected capacity change from 0 to 4194304
[ 4904.126384] XFS (loop7): Mounting V5 Filesystem
[ 4904.138864] XFS (loop7): Ending clean mount
[ 4904.139011] xfs filesystem being mounted at /mnt/loop7 supports timestamps until 2038 (0x7fffffff)
[ 4904.217516] loop8: detected capacity change from 0 to 4194304
[ 4907.738610] XFS (loop8): Mounting V5 Filesystem
[ 4907.751410] XFS (loop8): Ending clean mount
[ 4907.751550] xfs filesystem being mounted at /mnt/loop8 supports timestamps until 2038 (0x7fffffff)
[ 4907.832522] loop9: detected capacity change from 0 to 4194304
[ 4909.480132] XFS (loop9): Mounting V5 Filesystem
[ 4909.493792] XFS (loop9): Ending clean mount
[ 4909.494016] xfs filesystem being mounted at /mnt/loop9 supports timestamps until 2038 (0x7fffffff)
[ 4909.572326] loop5: detected capacity change from 0 to 4194304
[ 4911.457907] XFS (loop5): Mounting V5 Filesystem
[ 4911.470880] XFS (loop5): Ending clean mount
[ 4911.471038] xfs filesystem being mounted at /mnt/loop5 supports timestamps until 2038 (0x7fffffff)
[ 4911.559518] loop1: detected capacity change from 0 to 4194304
[ 4913.433757] XFS (loop1): Mounting V5 Filesystem
[ 4913.448956] XFS (loop1): Ending clean mount
[ 4913.449118] xfs filesystem being mounted at /mnt/loop1 supports timestamps until 2038 (0x7fffffff)
[ 4913.527403] loop10: detected capacity change from 0 to 4194304
[ 4915.194571] XFS (loop10): Mounting V5 Filesystem
[ 4915.208365] XFS (loop10): Ending clean mount
[ 4915.208533] xfs filesystem being mounted at /mnt/loop10 supports timestamps until 2038 (0x7fffffff)
+ df -h /mnt/loop1 /mnt/loop10 /mnt/loop2 /mnt/loop3 /mnt/loop4 /mnt/loop5 /mnt/loop6 /mnt/loop7 /mnt/loop8 /mnt/loop9
Filesystem Size Used Avail Use% Mounted on
/dev/loop1 2.0G 33M 2.0G 2% /mnt/loop1
/dev/loop10 2.0G 33M 2.0G 2% /mnt/loop10
/dev/loop2 2.0G 33M 2.0G 2% /mnt/loop2
/dev/loop3 2.0G 33M 2.0G 2% /mnt/loop3
/dev/loop4 2.0G 33M 2.0G 2% /mnt/loop4
/dev/loop5 2.0G 33M 2.0G 2% /mnt/loop5
/dev/loop6 2.0G 33M 2.0G 2% /mnt/loop6
/dev/loop7 2.0G 33M 2.0G 2% /mnt/loop7
/dev/loop8 2.0G 33M 2.0G 2% /mnt/loop8
/dev/loop9 2.0G 33M 2.0G 2% /mnt/loop9
++ shuf -i 1-10 -n 10
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop7/testfile
+ fio fio/verify.fio --filename=/mnt/loop7/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=0): [f(1)][100.0%][r=16.7MiB/s,w=0KiB/s][r=4274,w=0 IOPS][eta 00m:00s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17434: Tue Jun 22 01:19:46 2021
read: IOPS=3154, BW=12.3MiB/s (12.9MB/s)(316MiB/25685msec)
slat (usec): min=12, max=904, avg=20.59, stdev=18.50
clat (usec): min=340, max=7102.3k, avg=5049.36, stdev=98954.79
lat (usec): min=391, max=7102.3k, avg=5070.14, stdev=98954.78
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 5], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 6], 99.90th=[ 59], 99.95th=[ 123],
| 99.99th=[ 7013]
write: IOPS=3047, BW=11.9MiB/s (12.5MB/s)(500MiB/42007msec)
slat (usec): min=14, max=4011, avg=37.51, stdev=48.42
clat (usec): min=448, max=4274.3k, avg=5211.48, stdev=69368.44
lat (usec): min=504, max=4274.3k, avg=5249.22, stdev=69368.54
clat percentiles (usec):
| 1.00th=[ 1139], 5.00th=[ 1811], 10.00th=[ 2278],
| 20.00th=[ 2737], 30.00th=[ 2999], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3818],
| 80.00th=[ 4293], 90.00th=[ 5276], 95.00th=[ 6718],
| 99.00th=[ 9765], 99.50th=[ 13698], 99.90th=[ 147850],
| 99.95th=[ 329253], 99.99th=[4278191]
bw ( KiB/s): min= 16, max=20224, per=100.00%, avg=14837.81, stdev=6761.49, samples=69
iops : min= 4, max= 5056, avg=3709.45, stdev=1690.37, samples=69
lat (usec) : 500=0.01%, 750=0.19%, 1000=0.24%
lat (msec) : 2=3.64%, 4=72.46%, 10=22.78%, 20=0.42%, 50=0.06%
lat (msec) : 100=0.05%, 250=0.10%, 500=0.01%, 750=0.01%
cpu : usr=1.94%, sys=10.84%, ctx=166879, majf=0, minf=1916
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=81012,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=12.3MiB/s (12.9MB/s), 12.3MiB/s-12.3MiB/s (12.9MB/s-12.9MB/s), io=316MiB (332MB), run=25685-25685msec
WRITE: bw=11.9MiB/s (12.5MB/s), 11.9MiB/s-11.9MiB/s (12.5MB/s-12.5MB/s), io=500MiB (524MB), run=42007-42007msec
Disk stats (read/write):
loop7: ios=80272/128070, merge=0/0, ticks=405947/682548, in_queue=1094276, util=99.86%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop1/testfile
+ fio fio/verify.fio --filename=/mnt/loop1/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][82.4%][r=20.1MiB/s,w=0KiB/s][r=5150,w=0 IOPS][eta 00m:12s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17480: Tue Jun 22 01:20:44 2021
read: IOPS=4340, BW=16.0MiB/s (17.8MB/s)(316MiB/18620msec)
slat (usec): min=12, max=496, avg=19.31, stdev=11.81
clat (usec): min=343, max=222421, avg=3663.76, stdev=4648.02
lat (usec): min=396, max=222493, avg=3683.26, stdev=4649.25
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 6], 99.90th=[ 75], 99.95th=[ 123],
| 99.99th=[ 180]
write: IOPS=3426, BW=13.4MiB/s (14.0MB/s)(500MiB/37354msec)
slat (usec): min=14, max=3934, avg=37.25, stdev=45.77
clat (usec): min=447, max=3034.1k, avg=4630.07, stdev=42682.45
lat (usec): min=484, max=3034.2k, avg=4667.54, stdev=42682.51
clat percentiles (usec):
| 1.00th=[ 1139], 5.00th=[ 1876], 10.00th=[ 2311],
| 20.00th=[ 2769], 30.00th=[ 2999], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3785],
| 80.00th=[ 4293], 90.00th=[ 5211], 95.00th=[ 6390],
| 99.00th=[ 9634], 99.50th=[ 12256], 99.90th=[ 123208],
| 99.95th=[ 231736], 99.99th=[2566915]
bw ( KiB/s): min= 64, max=20536, per=100.00%, avg=15512.76, stdev=6026.12, samples=66
iops : min= 16, max= 5134, avg=3878.18, stdev=1506.53, samples=66
lat (usec) : 500=0.02%, 750=0.18%, 1000=0.23%
lat (msec) : 2=3.27%, 4=74.97%, 10=20.66%, 20=0.42%, 50=0.04%
lat (msec) : 100=0.08%, 250=0.10%, 500=0.01%, 750=0.01%
cpu : usr=2.33%, sys=12.94%, ctx=166072, majf=0, minf=1911
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80827,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=16.0MiB/s (17.8MB/s), 16.0MiB/s-16.0MiB/s (17.8MB/s-17.8MB/s), io=316MiB (331MB), run=18620-18620msec
WRITE: bw=13.4MiB/s (14.0MB/s), 13.4MiB/s-13.4MiB/s (14.0MB/s-14.0MB/s), io=500MiB (524MB), run=37354-37354msec
Disk stats (read/write):
loop1: ios=80486/128074, merge=0/0, ticks=294759/588124, in_queue=886005, util=99.87%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop6/testfile
+ fio fio/verify.fio --filename=/mnt/loop6/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.0%][r=18.6MiB/s,w=0KiB/s][r=4773,w=0 IOPS][eta 00m:16s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17580: Tue Jun 22 01:21:53 2021
read: IOPS=2774, BW=10.8MiB/s (11.4MB/s)(316MiB/29179msec)
slat (usec): min=11, max=2302, avg=24.47, stdev=34.44
clat (usec): min=299, max=8908.9k, avg=5739.38, stdev=126674.62
lat (usec): min=351, max=8908.9k, avg=5764.12, stdev=126674.57
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 5], 90.00th=[ 5], 95.00th=[ 6],
| 99.00th=[ 10], 99.50th=[ 11], 99.90th=[ 59], 99.95th=[ 65],
| 99.99th=[ 8926]
write: IOPS=3261, BW=12.7MiB/s (13.4MB/s)(500MiB/39244msec)
slat (usec): min=14, max=5530, avg=38.78, stdev=49.23
clat (usec): min=204, max=4739.8k, avg=4864.77, stdev=59719.99
lat (usec): min=473, max=4739.8k, avg=4903.78, stdev=59720.04
clat percentiles (usec):
| 1.00th=[ 1156], 5.00th=[ 1844], 10.00th=[ 2278],
| 20.00th=[ 2737], 30.00th=[ 2999], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3818],
| 80.00th=[ 4293], 90.00th=[ 5276], 95.00th=[ 6456],
| 99.00th=[ 9896], 99.50th=[ 12911], 99.90th=[ 105382],
| 99.95th=[ 333448], 99.99th=[4395631]
bw ( KiB/s): min= 64, max=20160, per=100.00%, avg=15279.39, stdev=6054.72, samples=67
iops : min= 16, max= 5040, avg=3819.78, stdev=1513.67, samples=67
lat (usec) : 250=0.01%, 500=0.02%, 750=0.17%, 1000=0.22%
lat (msec) : 2=3.56%, 4=72.34%, 10=22.80%, 20=0.69%, 50=0.01%
lat (msec) : 100=0.10%, 250=0.04%, 500=0.01%, 750=0.01%
cpu : usr=1.97%, sys=11.12%, ctx=170086, majf=0, minf=1914
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80953,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=10.8MiB/s (11.4MB/s), 10.8MiB/s-10.8MiB/s (11.4MB/s-11.4MB/s), io=316MiB (332MB), run=29179-29179msec
WRITE: bw=12.7MiB/s (13.4MB/s), 12.7MiB/s-12.7MiB/s (13.4MB/s-13.4MB/s), io=500MiB (524MB), run=39244-39244msec
Disk stats (read/write):
loop6: ios=80569/128064, merge=0/0, ticks=461919/680066, in_queue=1153292, util=99.84%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop8/testfile
+ fio fio/verify.fio --filename=/mnt/loop8/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.8%][r=18.1MiB/s,w=0KiB/s][r=4640,w=0 IOPS][eta 00m:16s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17630: Tue Jun 22 01:23:07 2021
read: IOPS=3154, BW=12.3MiB/s (12.9MB/s)(316MiB/25644msec)
slat (usec): min=12, max=1732, avg=20.20, stdev=14.08
clat (usec): min=366, max=7915.3k, avg=5049.94, stdev=110367.19
lat (usec): min=423, max=7915.3k, avg=5070.30, stdev=110367.15
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 6], 99.90th=[ 70], 99.95th=[ 115],
| 99.99th=[ 7819]
write: IOPS=2749, BW=10.7MiB/s (11.3MB/s)(500MiB/46557msec)
slat (usec): min=14, max=3689, avg=37.87, stdev=54.55
clat (usec): min=438, max=8286.2k, avg=5779.76, stdev=99151.99
lat (usec): min=475, max=8286.2k, avg=5817.86, stdev=99152.19
clat percentiles (usec):
| 1.00th=[ 1254], 5.00th=[ 1926], 10.00th=[ 2343],
| 20.00th=[ 2769], 30.00th=[ 2999], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3818],
| 80.00th=[ 4293], 90.00th=[ 5276], 95.00th=[ 6456],
| 99.00th=[ 10814], 99.50th=[ 15664], 99.90th=[ 229639],
| 99.95th=[ 367002], 99.99th=[8153727]
bw ( KiB/s): min= 80, max=20528, per=100.00%, avg=14218.97, stdev=6939.08, samples=72
iops : min= 20, max= 5132, avg=3554.69, stdev=1734.78, samples=72
lat (usec) : 500=0.01%, 750=0.12%, 1000=0.18%
lat (msec) : 2=3.17%, 4=75.36%, 10=20.38%, 20=0.50%, 50=0.02%
lat (msec) : 100=0.06%, 250=0.15%, 500=0.02%
cpu : usr=1.75%, sys=10.06%, ctx=171259, majf=0, minf=1912
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80882,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=12.3MiB/s (12.9MB/s), 12.3MiB/s-12.3MiB/s (12.9MB/s-12.9MB/s), io=316MiB (331MB), run=25644-25644msec
WRITE: bw=10.7MiB/s (11.3MB/s), 10.7MiB/s-10.7MiB/s (11.3MB/s-11.3MB/s), io=500MiB (524MB), run=46557-46557msec
Disk stats (read/write):
loop8: ios=80443/128076, merge=0/0, ticks=406622/758753, in_queue=1171913, util=90.93%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop10/testfile
+ fio fio/verify.fio --filename=/mnt/loop10/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.8%][r=9633KiB/s,w=0KiB/s][r=2408,w=0 IOPS][eta 00m:16s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17680: Tue Jun 22 01:24:20 2021
read: IOPS=3076, BW=12.0MiB/s (12.6MB/s)(315MiB/26211msec)
slat (usec): min=13, max=1824, avg=21.09, stdev=18.53
clat (usec): min=480, max=7498.9k, avg=5175.91, stdev=104916.83
lat (usec): min=548, max=7498.9k, avg=5197.18, stdev=104916.80
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 9], 99.90th=[ 81], 99.95th=[ 150],
| 99.99th=[ 7416]
write: IOPS=2798, BW=10.9MiB/s (11.5MB/s)(500MiB/45737msec)
slat (usec): min=14, max=6680, avg=36.81, stdev=41.50
clat (usec): min=449, max=7596.4k, avg=5678.44, stdev=93747.43
lat (usec): min=507, max=7596.4k, avg=5715.48, stdev=93747.53
clat percentiles (usec):
| 1.00th=[ 1221], 5.00th=[ 1926], 10.00th=[ 2343],
| 20.00th=[ 2769], 30.00th=[ 2999], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3818],
| 80.00th=[ 4293], 90.00th=[ 5276], 95.00th=[ 6390],
| 99.00th=[ 9110], 99.50th=[ 12518], 99.90th=[ 189793],
| 99.95th=[ 396362], 99.99th=[7482639]
bw ( KiB/s): min= 24, max=20144, per=100.00%, avg=14421.66, stdev=6800.87, samples=71
iops : min= 6, max= 5036, avg=3605.41, stdev=1700.22, samples=71
lat (usec) : 500=0.01%, 750=0.14%, 1000=0.21%
lat (msec) : 2=3.16%, 4=74.33%, 10=21.54%, 20=0.29%, 50=0.05%
lat (msec) : 100=0.09%, 250=0.14%, 500=0.02%, 750=0.01%
cpu : usr=1.95%, sys=10.37%, ctx=168893, majf=0, minf=1906
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80648,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=12.0MiB/s (12.6MB/s), 12.0MiB/s-12.0MiB/s (12.6MB/s-12.6MB/s), io=315MiB (330MB), run=26211-26211msec
WRITE: bw=10.9MiB/s (11.5MB/s), 10.9MiB/s-10.9MiB/s (11.5MB/s-11.5MB/s), io=500MiB (524MB), run=45737-45737msec
Disk stats (read/write):
loop10: ios=80648/128096, merge=0/1, ticks=417176/784119, in_queue=1212263, util=99.78%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop3/testfile
+ fio fio/verify.fio --filename=/mnt/loop3/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.2%][r=15.8MiB/s,w=0KiB/s][r=4042,w=0 IOPS][eta 00m:16s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17792: Tue Jun 22 01:25:31 2021
read: IOPS=3028, BW=11.8MiB/s (12.4MB/s)(316MiB/26722msec)
slat (usec): min=11, max=1198, avg=19.08, stdev=16.42
clat (usec): min=296, max=8275.7k, avg=5261.00, stdev=115686.50
lat (usec): min=358, max=8275.7k, avg=5280.25, stdev=115686.50
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 9], 99.90th=[ 84], 99.95th=[ 109],
| 99.99th=[ 8221]
write: IOPS=3023, BW=11.8MiB/s (12.4MB/s)(500MiB/42331msec)
slat (usec): min=14, max=3812, avg=39.09, stdev=55.33
clat (usec): min=345, max=4045.0k, avg=5250.30, stdev=57625.19
lat (usec): min=400, max=4045.1k, avg=5289.63, stdev=57625.64
clat percentiles (usec):
| 1.00th=[ 1254], 5.00th=[ 1942], 10.00th=[ 2376],
| 20.00th=[ 2802], 30.00th=[ 3032], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3785],
| 80.00th=[ 4293], 90.00th=[ 5342], 95.00th=[ 6652],
| 99.00th=[ 10028], 99.50th=[ 13566], 99.90th=[ 283116],
| 99.95th=[ 429917], 99.99th=[4043310]
bw ( KiB/s): min= 40, max=20343, per=100.00%, avg=14415.72, stdev=6395.60, samples=71
iops : min= 10, max= 5085, avg=3603.83, stdev=1598.94, samples=71
lat (usec) : 500=0.01%, 750=0.13%, 1000=0.19%
lat (msec) : 2=3.06%, 4=76.23%, 10=19.58%, 20=0.48%, 50=0.05%
lat (msec) : 100=0.08%, 250=0.10%, 500=0.04%
cpu : usr=1.91%, sys=10.40%, ctx=169739, majf=0, minf=1913
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80933,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=11.8MiB/s (12.4MB/s), 11.8MiB/s-11.8MiB/s (12.4MB/s-12.4MB/s), io=316MiB (332MB), run=26722-26722msec
WRITE: bw=11.8MiB/s (12.4MB/s), 11.8MiB/s-11.8MiB/s (12.4MB/s-12.4MB/s), io=500MiB (524MB), run=42331-42331msec
Disk stats (read/write):
loop3: ios=80697/128076, merge=0/0, ticks=424513/687123, in_queue=1117965, util=99.84%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop5/testfile
+ fio fio/verify.fio --filename=/mnt/loop5/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.2%][r=18.5MiB/s,w=0KiB/s][r=4723,w=0 IOPS][eta 00m:18s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=17949: Tue Jun 22 01:26:50 2021
read: IOPS=3797, BW=14.8MiB/s (15.6MB/s)(316MiB/21310msec)
slat (usec): min=12, max=1645, avg=21.24, stdev=19.08
clat (usec): min=344, max=3224.3k, avg=4189.49, stdev=45153.85
lat (usec): min=385, max=3224.3k, avg=4210.90, stdev=45153.88
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 7], 99.90th=[ 53], 99.95th=[ 83],
| 99.99th=[ 3239]
write: IOPS=2246, BW=8988KiB/s (9203kB/s)(500MiB/56968msec)
slat (usec): min=13, max=5020, avg=36.87, stdev=48.05
clat (usec): min=442, max=6274.5k, avg=7082.13, stdev=106334.81
lat (usec): min=483, max=6274.5k, avg=7119.24, stdev=106334.93
clat percentiles (usec):
| 1.00th=[ 1221], 5.00th=[ 1975], 10.00th=[ 2409],
| 20.00th=[ 2835], 30.00th=[ 3064], 40.00th=[ 3228],
| 50.00th=[ 3392], 60.00th=[ 3556], 70.00th=[ 3851],
| 80.00th=[ 4359], 90.00th=[ 5342], 95.00th=[ 6718],
| 99.00th=[ 11076], 99.50th=[ 24773], 99.90th=[ 591397],
| 99.95th=[2197816], 99.99th=[6006244]
bw ( KiB/s): min= 56, max=19904, per=100.00%, avg=12486.01, stdev=7497.88, samples=82
iops : min= 14, max= 4976, avg=3121.48, stdev=1874.46, samples=82
lat (usec) : 500=0.01%, 750=0.14%, 1000=0.18%
lat (msec) : 2=2.90%, 4=75.64%, 10=20.22%, 20=0.48%, 50=0.09%
lat (msec) : 100=0.08%, 250=0.14%, 500=0.03%, 750=0.01%, 1000=0.01%
cpu : usr=1.74%, sys=9.53%, ctx=170900, majf=0, minf=1912
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80918,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=14.8MiB/s (15.6MB/s), 14.8MiB/s-14.8MiB/s (15.6MB/s-15.6MB/s), io=316MiB (331MB), run=21310-21310msec
WRITE: bw=8988KiB/s (9203kB/s), 8988KiB/s-8988KiB/s (9203kB/s-9203kB/s), io=500MiB (524MB), run=56968-56968msec
Disk stats (read/write):
loop5: ios=80858/128102, merge=0/0, ticks=338585/931134, in_queue=1276111, util=97.92%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop2/testfile
+ fio fio/verify.fio --filename=/mnt/loop2/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.4%][r=17.2MiB/s,w=0KiB/s][r=4416,w=0 IOPS][eta 00m:16s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18028: Tue Jun 22 01:28:01 2021
read: IOPS=3316, BW=12.0MiB/s (13.6MB/s)(316MiB/24374msec)
slat (usec): min=12, max=1728, avg=20.83, stdev=16.48
clat (usec): min=349, max=6106.8k, avg=4800.99, stdev=85915.09
lat (usec): min=403, max=6106.8k, avg=4822.03, stdev=85915.06
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 6], 99.50th=[ 6], 99.90th=[ 42], 99.95th=[ 142],
| 99.99th=[ 6074]
write: IOPS=2842, BW=11.1MiB/s (11.6MB/s)(500MiB/45023msec)
slat (usec): min=13, max=6926, avg=37.89, stdev=53.94
clat (usec): min=398, max=7537.5k, avg=5588.11, stdev=87245.69
lat (usec): min=435, max=7537.6k, avg=5626.24, stdev=87245.89
clat percentiles (usec):
| 1.00th=[ 1172], 5.00th=[ 1942], 10.00th=[ 2376],
| 20.00th=[ 2802], 30.00th=[ 3032], 40.00th=[ 3163],
| 50.00th=[ 3326], 60.00th=[ 3523], 70.00th=[ 3785],
| 80.00th=[ 4293], 90.00th=[ 5276], 95.00th=[ 6652],
| 99.00th=[ 10683], 99.50th=[ 15008], 99.90th=[ 177210],
| 99.95th=[ 700449], 99.99th=[7012877]
bw ( KiB/s): min= 24, max=20096, per=100.00%, avg=14026.60, stdev=7197.62, samples=73
iops : min= 6, max= 5024, avg=3506.64, stdev=1799.41, samples=73
lat (usec) : 500=0.02%, 750=0.13%, 1000=0.22%
lat (msec) : 2=3.08%, 4=74.22%, 10=21.56%, 20=0.46%, 50=0.06%
lat (msec) : 100=0.04%, 250=0.15%, 500=0.01%, 750=0.01%, 1000=0.01%
cpu : usr=1.92%, sys=10.50%, ctx=171338, majf=0, minf=1911
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80828,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=12.0MiB/s (13.6MB/s), 12.0MiB/s-12.0MiB/s (13.6MB/s-13.6MB/s), io=316MiB (331MB), run=24374-24374msec
WRITE: bw=11.1MiB/s (11.6MB/s), 11.1MiB/s-11.1MiB/s (11.6MB/s-11.6MB/s), io=500MiB (524MB), run=45023-45023msec
Disk stats (read/write):
loop2: ios=80460/128067, merge=0/0, ticks=386643/722358, in_queue=1113839, util=91.01%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop4/testfile
+ fio fio/verify.fio --filename=/mnt/loop4/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][80.2%][r=17.0MiB/s,w=0KiB/s][r=4596,w=0 IOPS][eta 00m:17s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18179: Tue Jun 22 01:29:12 2021
read: IOPS=3395, BW=13.3MiB/s (13.9MB/s)(316MiB/23795msec)
slat (usec): min=12, max=1132, avg=19.87, stdev=13.15
clat (usec): min=300, max=3333.0k, avg=4689.17, stdev=50426.66
lat (usec): min=349, max=3333.0k, avg=4709.21, stdev=50426.85
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 7], 99.50th=[ 10], 99.90th=[ 77], 99.95th=[ 355],
| 99.99th=[ 3339]
write: IOPS=2821, BW=11.0MiB/s (11.6MB/s)(500MiB/45360msec)
slat (usec): min=14, max=3558, avg=35.63, stdev=37.46
clat (usec): min=425, max=4571.3k, avg=5632.46, stdev=65758.43
lat (usec): min=461, max=4571.4k, avg=5668.35, stdev=65758.69
clat percentiles (usec):
| 1.00th=[ 1237], 5.00th=[ 1942], 10.00th=[ 2376],
| 20.00th=[ 2802], 30.00th=[ 3032], 40.00th=[ 3195],
| 50.00th=[ 3359], 60.00th=[ 3523], 70.00th=[ 3818],
| 80.00th=[ 4293], 90.00th=[ 5211], 95.00th=[ 6521],
| 99.00th=[ 10683], 99.50th=[ 28443], 99.90th=[ 200279],
| 99.95th=[1052771], 99.99th=[4043310]
bw ( KiB/s): min= 56, max=20368, per=100.00%, avg=13835.14, stdev=6824.54, samples=74
iops : min= 14, max= 5092, avg=3458.76, stdev=1706.15, samples=74
lat (usec) : 500=0.01%, 750=0.14%, 1000=0.18%
lat (msec) : 2=3.04%, 4=74.35%, 10=21.44%, 20=0.40%, 50=0.11%
lat (msec) : 100=0.12%, 250=0.14%, 500=0.02%, 750=0.01%, 1000=0.01%
cpu : usr=1.94%, sys=10.57%, ctx=171162, majf=0, minf=1911
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80801,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=13.3MiB/s (13.9MB/s), 13.3MiB/s-13.3MiB/s (13.9MB/s-13.9MB/s), io=316MiB (331MB), run=23795-23795msec
WRITE: bw=11.0MiB/s (11.6MB/s), 11.0MiB/s-11.0MiB/s (11.6MB/s-11.6MB/s), io=500MiB (524MB), run=45360-45360msec
Disk stats (read/write):
loop4: ios=80470/128076, merge=0/0, ticks=377332/753568, in_queue=1138503, util=99.87%
+ for i in '`shuf -i 1-$NN -n $NN`'
+ fallocate -o 0 -l 524288000 /mnt/loop9/testfile
+ fio fio/verify.fio --filename=/mnt/loop9/testfile
write-and-verify: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
fio-3.8-5-g464b
Starting 1 process
Jobs: 1 (f=1): [V(1)][81.6%][r=18.4MiB/s,w=0KiB/s][r=4704,w=0 IOPS][eta 00m:14s]
write-and-verify: (groupid=0, jobs=1): err= 0: pid=18300: Tue Jun 22 01:30:15 2021
read: IOPS=3081, BW=12.0MiB/s (12.6MB/s)(316MiB/26269msec)
slat (usec): min=12, max=677, avg=20.48, stdev=15.82
clat (usec): min=310, max=6297.3k, avg=5168.96, stdev=90289.45
lat (usec): min=363, max=6297.3k, avg=5189.63, stdev=90289.42
clat percentiles (msec):
| 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 4], 80.00th=[ 4], 90.00th=[ 5], 95.00th=[ 5],
| 99.00th=[ 7], 99.50th=[ 9], 99.90th=[ 81], 99.95th=[ 184],
| 99.99th=[ 6275]
write: IOPS=3576, BW=13.0MiB/s (14.6MB/s)(500MiB/35790msec)
slat (usec): min=14, max=4000, avg=36.26, stdev=39.58
clat (usec): min=304, max=4562.7k, avg=4435.57, stdev=46610.70
lat (usec): min=462, max=4562.7k, avg=4472.06, stdev=46610.74
clat percentiles (usec):
| 1.00th=[ 1156], 5.00th=[ 1893], 10.00th=[ 2376],
| 20.00th=[ 2835], 30.00th=[ 3064], 40.00th=[ 3195],
| 50.00th=[ 3359], 60.00th=[ 3589], 70.00th=[ 3884],
| 80.00th=[ 4359], 90.00th=[ 5211], 95.00th=[ 6128],
| 99.00th=[ 8586], 99.50th=[ 11076], 99.90th=[ 162530],
| 99.95th=[ 185598], 99.99th=[3942646]
bw ( KiB/s): min= 96, max=20064, per=100.00%, avg=15750.58, stdev=5428.81, samples=65
iops : min= 24, max= 5016, avg=3937.60, stdev=1357.20, samples=65
lat (usec) : 500=0.01%, 750=0.19%, 1000=0.21%
lat (msec) : 2=3.22%, 4=73.90%, 10=21.94%, 20=0.27%, 50=0.06%
lat (msec) : 100=0.06%, 250=0.11%, 500=0.01%, 750=0.01%, 1000=0.01%
cpu : usr=2.15%, sys=11.73%, ctx=171171, majf=0, minf=1913
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=80947,128000,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=12.0MiB/s (12.6MB/s), 12.0MiB/s-12.0MiB/s (12.6MB/s-12.6MB/s), io=316MiB (332MB), run=26269-26269msec
WRITE: bw=13.0MiB/s (14.6MB/s), 13.0MiB/s-13.0MiB/s (14.6MB/s-14.6MB/s), io=500MiB (524MB), run=35790-35790msec
Disk stats (read/write):
loop9: ios=80889/128077, merge=0/4, ticks=418098/583896, in_queue=1007958, util=96.45%
+ df -h /mnt/loop1 /mnt/loop10 /mnt/loop2 /mnt/loop3 /mnt/loop4 /mnt/loop5 /mnt/loop6 /mnt/loop7 /mnt/loop8 /mnt/loop9
Filesystem Size Used Avail Use% Mounted on
/dev/loop1 2.0G 534M 1.5G 27% /mnt/loop1
/dev/loop10 2.0G 534M 1.5G 27% /mnt/loop10
/dev/loop2 2.0G 534M 1.5G 27% /mnt/loop2
/dev/loop3 2.0G 534M 1.5G 27% /mnt/loop3
/dev/loop4 2.0G 534M 1.5G 27% /mnt/loop4
/dev/loop5 2.0G 534M 1.5G 27% /mnt/loop5
/dev/loop6 2.0G 534M 1.5G 27% /mnt/loop6
/dev/loop7 2.0G 534M 1.5G 27% /mnt/loop7
/dev/loop8 2.0G 534M 1.5G 27% /mnt/loop8
/dev/loop9 2.0G 534M 1.5G 27% /mnt/loop9
+ unload_loop
++ shuf -i 1-10 -n 10
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop9
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop4
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop3
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop8
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop2
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop10
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop5
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop7
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop6
+ for i in '`shuf -i 1-$NN -n $NN`'
+ umount /mnt/loop1
+ losetup -D
+ sleep 3
+ rmmod loop
+ modprobe -r loop
+ lsmod
+ grep loop
+ rm -fr /mnt/loop1 /mnt/loop10 /mnt/loop2 /mnt/loop3 /mnt/loop4 /mnt/loop5 /mnt/loop6 /mnt/loop7 /mnt/loop8 /mnt/loop9
#
--
2.22.1
next reply other threads:[~2021-06-22 23:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 23:19 Chaitanya Kulkarni [this message]
2021-06-22 23:19 ` [PATCH 1/9] loop: use sysfs_emit() in the sysfs offset show Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 2/9] loop: use sysfs_emit() in the sysfs sizelimit show Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 3/9] loop: use sysfs_emit() in the sysfs autoclear show Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 4/9] loop: use sysfs_emit() in the sysfs partscan show Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 5/9] loop: use sysfs_emit() in the sysfs dio show Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 6/9] loop: remove extra variable in lo_fallocate() Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 7/9] loop: remove extra variable in lo_req_flush Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 8/9] loop: remove the extra line in declaration Chaitanya Kulkarni
2021-06-22 23:19 ` [PATCH 9/9] loop: allow user to set the queue depth Chaitanya Kulkarni
2021-06-22 23:27 ` Bart Van Assche
2021-06-24 4:36 ` Chaitanya Kulkarni
2021-06-24 14:14 ` Bart Van Assche
2021-06-24 22:48 ` Chaitanya Kulkarni
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