[lkp] [locking/rwsem] 133e89ef5e: +12.6% improvement of vm-scalability.throughput

[lkp] [locking/rwsem] 133e89ef5e: +12.6% improvement of vm-scalability.throughput

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 692 bytes --]


FYI, we noticed a +12.6% improvement of vm-scalability.throughput due to commit:

commit 133e89ef5ef338e1358b16246521ba17d935c396 ("locking/rwsem: Enable lockless waiter wakeup(s)")
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core

in testcase: vm-scalability
on test machine: lkp-bdw-ex2: 160 threads Broadwell-EX with 512G memory
with following parameters: cpufreq_governor=performance/runtime=300s/test=small-allocs-mt


Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.


Thanks,
Xiaolong

[-- Attachment #2: job.yaml --]
[-- Type: text/plain, Size: 3618 bytes --]

---
LKP_SERVER: inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
testcase: vm-scalability
default-monitors:
  wait: activate-monitor
  kmsg: 
  uptime: 
  iostat: 
  heartbeat: 
  vmstat: 
  numa-numastat: 
  numa-vmstat: 
  numa-meminfo: 
  proc-vmstat: 
  proc-stat:
    interval: 10
  meminfo: 
  slabinfo: 
  interrupts: 
  lock_stat: 
  latency_stats: 
  softirqs: 
  bdi_dev_mapping: 
  diskstats: 
  nfsstat: 
  cpuidle: 
  cpufreq-stats: 
  turbostat: 
  pmeter: 
  sched_debug:
    interval: 60
cpufreq_governor: performance
NFS_HANG_DF_TIMEOUT: 200
NFS_HANG_CHECK_INTERVAL: 900
default-watchdogs:
  oom-killer: 
  watchdog: 
  nfs-hang: 
commit: 133e89ef5ef338e1358b16246521ba17d935c396
model: Broadwell-EX
nr_cpu: 160
memory: 512G
nr_ssd_partitions: 1
ssd_partitions: "/dev/nvme0n1p*"
swap_partitions: 
rootfs_partition: 
category: benchmark
perf-profile: 
runtime: 300s
size: 
vm-scalability:
  test: small-allocs-mt
queue: bisect
testbox: lkp-bdw-ex2
tbox_group: lkp-bdw-ex2
kconfig: x86_64-rhel
enqueue_time: 2016-06-05 07:18:12.211643734 +08:00
compiler: gcc-4.9
rootfs: debian-x86_64-2015-02-07.cgz
id: eb1efebc69bae040200d52948518e048877adc19
user: lkp
head_commit: e21e216ee211b97ab7ee8235b5e7252a81dd32b4
base_commit: 1a695a905c18548062509178b98bc91e67510864
branch: linux-devel/devel-hourly-2016060403
result_root: "/result/vm-scalability/performance-300s-small-allocs-mt/lkp-bdw-ex2/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/0"
job_file: "/lkp/scheduled/lkp-bdw-ex2/bisect_vm-scalability-performance-300s-small-allocs-mt-debian-x86_64-2015-02-07.cgz-x86_64-rhel-133e89ef5ef338e1358b16246521ba17d935c396-20160605-125223-q3eln7-0.yaml"
max_uptime: 1500
initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/lkp-bdw-ex2/bisect_vm-scalability-performance-300s-small-allocs-mt-debian-x86_64-2015-02-07.cgz-x86_64-rhel-133e89ef5ef338e1358b16246521ba17d935c396-20160605-125223-q3eln7-0.yaml
- ARCH=x86_64
- kconfig=x86_64-rhel
- branch=linux-devel/devel-hourly-2016060403
- commit=133e89ef5ef338e1358b16246521ba17d935c396
- BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/vmlinuz-4.7.0-rc1-00107-g133e89e
- max_uptime=1500
- RESULT_ROOT=/result/vm-scalability/performance-300s-small-allocs-mt/lkp-bdw-ex2/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/0
- LKP_SERVER=inn
- |2-


  earlyprintk=ttyS0,115200 systemd.log_level=err
  debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100
  panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0
  console=ttyS0,115200 console=tty0 vga=normal

  rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: "/pkg/linux/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/modules.cgz"
bm_initrd: "/osimage/deps/debian-x86_64-2015-02-07.cgz/lkp.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/run-ipconfig.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/turbostat.cgz,/lkp/benchmarks/turbostat.cgz,/lkp/benchmarks/perf-profile-x86_64.cgz,/lkp/benchmarks/vm-scalability.cgz"
linux_headers_initrd: "/pkg/linux/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/linux-headers.cgz"
repeat_to: 2
kernel: "/pkg/linux/x86_64-rhel/gcc-4.9/133e89ef5ef338e1358b16246521ba17d935c396/vmlinuz-4.7.0-rc1-00107-g133e89e"
dequeue_time: 2016-06-05 07:36:51.495310078 +08:00
job_state: finished
loadavg: 175.54 119.85 52.86 1/1878 12822
start_time: '1465083520'
end_time: '1465083823'
version: "/lkp/lkp/.src-20160603-214427"

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2016-06-05 07:38:36 echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
2016-06-05 07:38:36 echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
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2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu79/cpufreq/scaling_governor
2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu8/cpufreq/scaling_governor
2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu80/cpufreq/scaling_governor
2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu81/cpufreq/scaling_governor
2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu82/cpufreq/scaling_governor
2016-06-05 07:38:38 echo performance > /sys/devices/system/cpu/cpu83/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu84/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu85/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu86/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu87/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu88/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu89/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu9/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu90/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu91/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu92/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu93/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu94/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu95/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu96/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu97/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu98/cpufreq/scaling_governor
2016-06-05 07:38:39 echo performance > /sys/devices/system/cpu/cpu99/cpufreq/scaling_governor
2016-06-05 07:38:40 mount -t tmpfs -o size=100% vm-scalability-tmp /tmp/vm-scalability-tmp
2016-06-05 07:38:40 truncate -s 540917514240 /tmp/vm-scalability-tmp/vm-scalability.img
2016-06-05 07:38:40 mkfs.xfs -q /tmp/vm-scalability-tmp/vm-scalability.img
2016-06-05 07:38:40 mount -o loop /tmp/vm-scalability-tmp/vm-scalability.img /tmp/vm-scalability-tmp/vm-scalability
2016-06-05 07:38:40 ./case-small-allocs-mt
2016-06-05 07:38:40 ./usemem --runtime 300 -t 192 --readonly --unit 40960 22906492245
2016-06-05 07:43:43 umount /tmp/vm-scalability-tmp/vm-scalability
2016-06-05 07:43:43 rm /tmp/vm-scalability-tmp/vm-scalability.img
2016-06-05 07:43:43 umount /tmp/vm-scalability-tmp