* Where IOSCHED ?
@ 2015-07-22 20:05 Pavel Vasilyev
2015-07-23 12:39 ` Sebastian Andrzej Siewior
2015-07-24 9:35 ` Wolfgang M. Reimer
0 siblings, 2 replies; 6+ messages in thread
From: Pavel Vasilyev @ 2015-07-22 20:05 UTC (permalink / raw)
To: linux-rt-users
# dmesg | grep sched
[ 0.387902] io scheduler noop registered
[ 0.387989] io scheduler deadline registered
[ 0.388079] io scheduler cfq registered (default)
# cat /boot/config-3.18.17-rt14 | grep IOSCHED
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_IOSCHED="cfq"
# cat /sys/block/sda/queue/scheduler
none
# uname -a
Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51 MSK 2015
x86_64 GNU/Linux
--
Pavel.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Where IOSCHED ?
2015-07-22 20:05 Where IOSCHED ? Pavel Vasilyev
@ 2015-07-23 12:39 ` Sebastian Andrzej Siewior
2015-07-25 1:44 ` pavel
2015-07-25 11:27 ` pavel
2015-07-24 9:35 ` Wolfgang M. Reimer
1 sibling, 2 replies; 6+ messages in thread
From: Sebastian Andrzej Siewior @ 2015-07-23 12:39 UTC (permalink / raw)
To: Pavel Vasilyev; +Cc: linux-rt-users
* Pavel Vasilyev | 2015-07-22 23:05:24 [+0300]:
>[ 0.388079] io scheduler cfq registered (default)
># cat /sys/block/sda/queue/scheduler
>none
Does the same thing happen with plain v3.18.17? Because if it does then
it is not a -RT problem.
># uname -a
>Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51
>MSK 2015 x86_64 GNU/Linux
Sebastian
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Where IOSCHED ?
2015-07-22 20:05 Where IOSCHED ? Pavel Vasilyev
2015-07-23 12:39 ` Sebastian Andrzej Siewior
@ 2015-07-24 9:35 ` Wolfgang M. Reimer
2015-07-25 1:42 ` pavel
1 sibling, 1 reply; 6+ messages in thread
From: Wolfgang M. Reimer @ 2015-07-24 9:35 UTC (permalink / raw)
To: pavel, linux-rt-users
On 22.07.2015 22:05, Pavel Vasilyev wrote:
> # dmesg | grep sched
> [ 0.387902] io scheduler noop registered
> [ 0.387989] io scheduler deadline registered
> [ 0.388079] io scheduler cfq registered (default)
>
# dmesg | grep sched
[ 0.516085] io scheduler noop registered
[ 0.516089] io scheduler deadline registered (default)
[ 0.516096] io scheduler cfq registered
> # cat /boot/config-3.18.17-rt14 | grep IOSCHED
> CONFIG_IOSCHED_NOOP=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_CFQ=y
> CONFIG_CFQ_GROUP_IOSCHED=y
> CONFIG_DEFAULT_IOSCHED="cfq"
>
# cat /boot/config-3.18.17-rt14 | grep IOSCHED
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_IOSCHED="deadline"
> # cat /sys/block/sda/queue/scheduler
> none
>
# cat /sys/block/sda/queue/scheduler
noop [deadline] cfq
> # uname -a
> Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51 MSK 2015 x86_64 GNU/Linux
# uname -a
Linux t520-wolf 3.18.17-rt14 #1 SMP PREEMPT RT Tue Jul 7 14:23:12 CEST 2015 x86_64 x86_64 x86_64 GNU/Linux
Hi Pavel,
so in my case /sys/block/sda/queue/scheduler shows the correct I/O
schedulers for the *same* kernel (3.18.17-rt14). The only difference is
that my default I/O scheduler is "deadline".
Wolfgang
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Where IOSCHED ?
2015-07-24 9:35 ` Wolfgang M. Reimer
@ 2015-07-25 1:42 ` pavel
0 siblings, 0 replies; 6+ messages in thread
From: pavel @ 2015-07-25 1:42 UTC (permalink / raw)
To: Wolfgang M. Reimer, linux-rt-users
24.07.2015 12:35, Wolfgang M. Reimer пишет:
> On 22.07.2015 22:05, Pavel Vasilyev wrote:
>
>> # dmesg | grep sched
>> [ 0.387902] io scheduler noop registered
>> [ 0.387989] io scheduler deadline registered
>> [ 0.388079] io scheduler cfq registered (default)
>>
> # dmesg | grep sched
> [ 0.516085] io scheduler noop registered
> [ 0.516089] io scheduler deadline registered (default)
> [ 0.516096] io scheduler cfq registered
>
>> # cat /boot/config-3.18.17-rt14 | grep IOSCHED
>> CONFIG_IOSCHED_NOOP=y
>> CONFIG_IOSCHED_DEADLINE=y
>> CONFIG_IOSCHED_CFQ=y
>> CONFIG_CFQ_GROUP_IOSCHED=y
>> CONFIG_DEFAULT_IOSCHED="cfq"
>>
> # cat /boot/config-3.18.17-rt14 | grep IOSCHED
> CONFIG_IOSCHED_NOOP=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_CFQ=y
> CONFIG_CFQ_GROUP_IOSCHED=y
> CONFIG_DEFAULT_IOSCHED="deadline"
>
>
>> # cat /sys/block/sda/queue/scheduler
>> none
>>
> # cat /sys/block/sda/queue/scheduler
> noop [deadline] cfq
>
>> # uname -a
>> Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51 MSK 2015 x86_64 GNU/Linux
> # uname -a
> Linux t520-wolf 3.18.17-rt14 #1 SMP PREEMPT RT Tue Jul 7 14:23:12 CEST 2015 x86_64 x86_64 x86_64 GNU/Linux
>
>
> Hi Pavel,
>
> so in my case /sys/block/sda/queue/scheduler shows the correct I/O
> schedulers for the *same* kernel (3.18.17-rt14). The only difference is
> that my default I/O scheduler is "deadline".
>
> Wolfgang
>
Maybe my mistake, but I use a Soft RAID1
$ cat /sys/block/{sd,md}*/queue/scheduler
none
none
none
none
none
none
--
Other server (Debian 6.0.10): non RT, but with soft RAID1 too.
$ uname -a
Linux mail 2.6.32-5-amd64 #1 SMP Wed Jun 17 16:09:06 UTC 2015 x86_64 GNU/Linux
$ cat /sys/block/{sd,md}*/queue/scheduler
noop anticipatory deadline [cfq]
noop anticipatory deadline [cfq]
none
none
none
here: sda,sdb,md0,md1,md2,md3
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Where IOSCHED ?
2015-07-23 12:39 ` Sebastian Andrzej Siewior
@ 2015-07-25 1:44 ` pavel
2015-07-25 11:27 ` pavel
1 sibling, 0 replies; 6+ messages in thread
From: pavel @ 2015-07-25 1:44 UTC (permalink / raw)
To: Sebastian Andrzej Siewior; +Cc: linux-rt-users
23.07.2015 15:39, Sebastian Andrzej Siewior пишет:
> * Pavel Vasilyev | 2015-07-22 23:05:24 [+0300]:
>
>> [ 0.388079] io scheduler cfq registered (default)
>> # cat /sys/block/sda/queue/scheduler
>> none
> Does the same thing happen with plain v3.18.17? Because if it does then
> it is not a -RT problem.
This production server, but i try compile plain kernel :)
>
>> # uname -a
>> Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51
>> MSK 2015 x86_64 GNU/Linux
> Sebastian
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Where IOSCHED ?
2015-07-23 12:39 ` Sebastian Andrzej Siewior
2015-07-25 1:44 ` pavel
@ 2015-07-25 11:27 ` pavel
1 sibling, 0 replies; 6+ messages in thread
From: pavel @ 2015-07-25 11:27 UTC (permalink / raw)
To: Sebastian Andrzej Siewior; +Cc: linux-rt-users
23.07.2015 15:39, Sebastian Andrzej Siewior пишет:
> * Pavel Vasilyev | 2015-07-22 23:05:24 [+0300]:
>> [ 0.388079] io scheduler cfq registered (default)
>> # cat /sys/block/sda/queue/scheduler
>> none
> Does the same thing happen with plain v3.18.17? Because if it does then
> it is not a -RT problem.
# gzip -cd ../patch-3.18.17-rt14.patch.gz | patch -p1 -R;
# make oldconfig; make; make install; make modules_install; reboot;
...
# cat /sys/block/{sd,md}*/queue/scheduler
none
none
none
none
none
none
Ooops o.0
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-07-25 11:32 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2015-07-22 20:05 Where IOSCHED ? Pavel Vasilyev
2015-07-23 12:39 ` Sebastian Andrzej Siewior
2015-07-25 1:44 ` pavel
2015-07-25 11:27 ` pavel
2015-07-24 9:35 ` Wolfgang M. Reimer
2015-07-25 1:42 ` pavel
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