[LKP] [mm] 721c21c17ab: +11.7% will-it-scale.per_thread_ops
From: Huang Ying
Date: Tue Feb 03 2015 - 02:45:17 EST
FYI, we noticed the below changes on
commit 721c21c17ab958abf19a8fc611c3bd4743680e38 ("mm: mmu_gather: use tlb->end != 0 only for TLB invalidation")
testbox/testcase/testparams: nhm4/will-it-scale/performance-readseek1
v3.19-rc4 721c21c17ab958abf19a8fc611
---------------- --------------------------
%stddev %change %stddev
\ | \
0.56 Â 1% +5.2% 0.59 Â 1% will-it-scale.scalability
1807741 Â 0% +2.3% 1848641 Â 0% will-it-scale.per_thread_ops
740 Â 30% +40.9% 1043 Â 26% sched_debug.cpu#4.ttwu_local
1335 Â 20% +23.7% 1651 Â 17% sched_debug.cpu#4.ttwu_count
506 Â 9% +40.8% 712 Â 1% cpuidle.C1-NHM.usage
120 Â 9% +33.1% 160 Â 11% sched_debug.cpu#7.load
120 Â 9% +26.2% 151 Â 10% sched_debug.cfs_rq[7]:/.load
90 Â 5% -16.2% 75 Â 16% sched_debug.cpu#6.cpu_load[4]
96 Â 7% +16.7% 112 Â 10% sched_debug.cfs_rq[2]:/.runnable_load_avg
testbox/testcase/testparams: nhm4/will-it-scale/performance-pread2
v3.19-rc4 721c21c17ab958abf19a8fc611
---------------- --------------------------
900692 Â 1% +11.7% 1005724 Â 0% will-it-scale.per_thread_ops
28033529 Â 0% -1.2% 27698665 Â 0% will-it-scale.time.voluntary_context_switches
671 Â 22% +40.4% 942 Â 27% sched_debug.cfs_rq[7]:/.blocked_load_avg
802 Â 19% +30.9% 1049 Â 25% sched_debug.cfs_rq[7]:/.tg_load_contrib
44840 Â 6% +15.6% 51846 Â 6% meminfo.DirectMap4k
18284 Â 1% -7.4% 16926 Â 2% vmstat.system.in
378463 Â 0% -1.2% 373746 Â 0% vmstat.system.cs
testbox/testcase/testparams: nhm4/will-it-scale/performance-readseek3
v3.19-rc4 721c21c17ab958abf19a8fc611
---------------- --------------------------
0.55 Â 0% +9.9% 0.60 Â 5% will-it-scale.scalability
1791707 Â 0% +2.9% 1843202 Â 0% will-it-scale.per_thread_ops
187 Â 41% +167.3% 501 Â 23% sched_debug.cfs_rq[0]:/.blocked_load_avg
281 Â 29% +121.3% 622 Â 18% sched_debug.cfs_rq[0]:/.tg_load_contrib
110 Â 9% +25.5% 138 Â 13% sched_debug.cfs_rq[5]:/.load
110 Â 9% +25.9% 138 Â 13% sched_debug.cpu#5.load
178 Â 6% -19.5% 144 Â 16% sched_debug.cpu#4.cpu_load[1]
94 Â 6% +12.9% 107 Â 8% sched_debug.cfs_rq[3]:/.runnable_load_avg
1.78 Â 7% +17.4% 2.09 Â 0% perf-profile.cpu-cycles.put_page.shmem_file_read_iter.new_sync_read.__vfs_read.vfs_read
187 Â 9% -19.1% 152 Â 16% sched_debug.cpu#4.cpu_load[2]
757 Â 5% +10.6% 838 Â 2% slabinfo.kmalloc-2048.active_objs
3064 Â 7% +7.8% 3302 Â 6% sched_debug.cpu#1.curr->pid
5.23 Â 2% +8.8% 5.69 Â 4% perf-profile.cpu-cycles.security_file_permission.rw_verify_area.vfs_read.sys_read.system_call_fastpath
3.23 Â 4% +8.0% 3.48 Â 5% perf-profile.cpu-cycles.copy_page_to_iter_iovec.copy_page_to_iter.shmem_file_read_iter.new_sync_read.__vfs_read
4216 Â 7% +7.5% 4531 Â 5% slabinfo.kmalloc-192.active_objs
nhm4: Nehalem
Memory: 4G
lkp-sbx04: Sandy Bridge-EX
Memory: 64G
will-it-scale.per_thread_ops
1.04e+06 ++---------------------------------------------------------------+
| O O O |
1.02e+06 ++ O O O O O O O O O |
1e+06 O+ O O O O O
| O O O |
980000 ++ |
| |
960000 ++ |
| |
940000 ++ |
920000 ++ |
*.. *..* |
900000 ++ + |
| *...*.. + |
880000 ++--------*------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
apt-get install ruby ruby-oj
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/setup-local job.yaml # the job file attached in this email
bin/run-local job.yaml
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,
Huang, Ying
---
testcase: will-it-scale
default-monitors:
wait: pre-test
uptime:
iostat:
vmstat:
numa-numastat:
numa-vmstat:
numa-meminfo:
proc-vmstat:
proc-stat:
meminfo:
slabinfo:
interrupts:
lock_stat:
latency_stats:
softirqs:
bdi_dev_mapping:
diskstats:
cpuidle:
cpufreq:
turbostat:
sched_debug:
interval: 10
pmeter:
default_watchdogs:
watch-oom:
watchdog:
cpufreq_governor:
- performance
commit: 634b0bd490b7ebd7a054cea4f7e0d25748bde678
model: Nehalem
nr_cpu: 8
memory: 4G
hdd_partitions: "/dev/disk/by-id/ata-WDC_WD1003FBYZ-010FB0_WD-WCAW36812041-part1"
swap_partitions: "/dev/disk/by-id/ata-WDC_WD1003FBYZ-010FB0_WD-WCAW36812041-part2"
rootfs_partition: "/dev/disk/by-id/ata-WDC_WD1003FBYZ-010FB0_WD-WCAW36812041-part3"
netconsole_port: 6649
perf-profile:
freq: 800
will-it-scale:
test:
- pread2
testbox: nhm4
tbox_group: nhm4
kconfig: x86_64-rhel
enqueue_time: 2015-01-16 19:39:12.848821511 +08:00
head_commit: 634b0bd490b7ebd7a054cea4f7e0d25748bde678
base_commit: eaa27f34e91a14cdceed26ed6c6793ec1d186115
branch: next/master
kernel: "/kernel/x86_64-rhel/634b0bd490b7ebd7a054cea4f7e0d25748bde678/vmlinuz-3.19.0-rc4-next-20150116-g634b0bd"
user: lkp
queue: cyclic
rootfs: debian-x86_64-2015-01-13.cgz
result_root: "/result/nhm4/will-it-scale/performance-pread2/debian-x86_64-2015-01-13.cgz/x86_64-rhel/634b0bd490b7ebd7a054cea4f7e0d25748bde678/0"
job_file: "/lkp/scheduled/nhm4/cyclic_will-it-scale-performance-pread2-x86_64-rhel-HEAD-634b0bd490b7ebd7a054cea4f7e0d25748bde678-0.yaml"
dequeue_time: 2015-01-17 02:30:35.332402855 +08:00
job_state: finished
loadavg: 5.12 3.21 1.34 1/123 6702
start_time: '1421433067'
end_time: '1421433372'
version: "/lkp/lkp/.src-20150116-113525"
./runtest.py pread2 32 1 4 6 8
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