[lkp-robot] [drm] e1f8a89c4f: pft.faults_per_sec_per_cpu -77.9% regression
Greeting,
FYI, we noticed a -77.9% regression of pft.faults_per_sec_per_cpu due to commit:
commit: e1f8a89c4f33f5b32cfb047f07fdf6d38cda854a ("drm: introduce sync objects
(v4)")
git://people.freedesktop.org/~airlied/linux.git drm-syncobj-sem
in testcase: pft
on test machine: qemu-system-x86_64 -enable-kvm -cpu Penryn -smp 4 -m 2G
with following parameters:
iterations: 20x
test-description: Pft is the page fault test micro benchmark.
test-url: https://github.com/gormanm/pft
Details are as below:
-->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k job-script # job-script is attached in this
email
testcase/path_params/tbox_group/run: pft/20x/vm-vp-2G
v4.12-rc2 e1f8a89c4f33f5b32cfb047f07
--
%stddev %change %stddev
\ |\
878620 ±
15% -77.9% 194209 ± 12% pft.faults_per_sec_per_cpu
7.16 ± 23%+257.2% 25.58 ± 12% pft.time.elapsed_time
7.16 ± 23%+257.2% 25.58 ± 12% pft.time.elapsed_time.max
1223 ± 10%+199.9% 3667 ± 15%
pft.time.involuntary_context_switches
61828 ± 2% +10106.0%6310202 ± 0% pft.time.minor_page_faults
145.40 ± 3% +20.6% 175.33 ± 5%
pft.time.percent_of_cpu_this_job_got
9.37 ± 22%+345.2% 41.72 ± 15% pft.time.system_time
5.04 ± 11% -45.6% 2.74 ± 9% mpstat.cpu.usr%
131734 ± 12% +20.3% 158487 ± 5% softirqs.TIMER
1335 ± 11%+105.1% 2738 ±
19% vmstat.system.cs
5390 ± 4% -27.6% 3904 ± 38% slabinfo.kmalloc-96.active_objs
5420 ± 3% -21.5% 4252 ± 27% slabinfo.kmalloc-96.num_objs
68.30 ±209% +13218.2% 9096 ± 84%
latency_stats.max.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
588552 ± 32% -74.2% 151873 ± 37%
latency_stats.sum.ep_poll.SyS_epoll_wait.do_syscall_64.return_from_SYSCALL_64
74.20 ±203% +12326.8% 9220 ± 82%
latency_stats.sum.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
160550 ± 14%-100.0% 0.00 ± -1% meminfo.AnonHugePages
204792 ± 0%-100.0% 0.00 ± -1% meminfo.CmaFree
204800 ± 0%-100.0% 0.00 ± -1% meminfo.CmaTotal
3041 ± 0% +13.4% 3449 ± 0% meminfo.KernelStack
51198 ± 0%-100.0% 0.00 ± -1% proc-vmstat.nr_free_cma
3033 ± 1% +13.6% 3446 ± 0% proc-vmstat.nr_kernel_stack
73394 ± 9% +8258.9%6134982 ± 2% proc-vmstat.numa_hit
73394 ± 9% +8258.9%6134982 ± 2% proc-vmstat.numa_local
67006 ± 9% +9043.7%6126912 ± 2% proc-vmstat.pgfault
11161 ± 7%-100.0% 0.00 ± -1%
proc-vmstat.thp_deferred_split_page
11217 ± 7%-100.0% 0.00 ± -1% proc-vmstat.thp_fault_alloc
7.16 ± 23%+257.2% 25.58 ± 12% time.elapsed_time
7.16 ± 23%+257.2% 25.58 ± 12% time.elapsed_time.max
1223 ± 10%+199.9% 3667 ± 15% time.involuntary_context_switches
61828 ± 2% +10106.0%6310202 ± 0% time.minor_page_faults
pft.faults_per_sec_per_cpu
1e+06 ++--*--+
90 ++*.. .. |
| *: ..|
80 ++ : : : ...*|
70 ++ ...* : : : *...|
*...: : : : |
60 ++ : : :: |
50 ++ : : : : |
40 ++ : : : :|
| : : : :|
30 ++ : : : : |
20 O+ O : O :O: O : O OO
[lkp-robot] [drm] e1f8a89c4f: pft.faults_per_sec_per_cpu -77.9% regression
Greeting,
FYI, we noticed a -77.9% regression of pft.faults_per_sec_per_cpu due to commit:
commit: e1f8a89c4f33f5b32cfb047f07fdf6d38cda854a ("drm: introduce sync objects
(v4)")
git://people.freedesktop.org/~airlied/linux.git drm-syncobj-sem
in testcase: pft
on test machine: qemu-system-x86_64 -enable-kvm -cpu Penryn -smp 4 -m 2G
with following parameters:
iterations: 20x
test-description: Pft is the page fault test micro benchmark.
test-url: https://github.com/gormanm/pft
Details are as below:
-->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k job-script # job-script is attached in this
email
testcase/path_params/tbox_group/run: pft/20x/vm-vp-2G
v4.12-rc2 e1f8a89c4f33f5b32cfb047f07
--
%stddev %change %stddev
\ |\
878620 ±
15% -77.9% 194209 ± 12% pft.faults_per_sec_per_cpu
7.16 ± 23%+257.2% 25.58 ± 12% pft.time.elapsed_time
7.16 ± 23%+257.2% 25.58 ± 12% pft.time.elapsed_time.max
1223 ± 10%+199.9% 3667 ± 15%
pft.time.involuntary_context_switches
61828 ± 2% +10106.0%6310202 ± 0% pft.time.minor_page_faults
145.40 ± 3% +20.6% 175.33 ± 5%
pft.time.percent_of_cpu_this_job_got
9.37 ± 22%+345.2% 41.72 ± 15% pft.time.system_time
5.04 ± 11% -45.6% 2.74 ± 9% mpstat.cpu.usr%
131734 ± 12% +20.3% 158487 ± 5% softirqs.TIMER
1335 ± 11%+105.1% 2738 ±
19% vmstat.system.cs
5390 ± 4% -27.6% 3904 ± 38% slabinfo.kmalloc-96.active_objs
5420 ± 3% -21.5% 4252 ± 27% slabinfo.kmalloc-96.num_objs
68.30 ±209% +13218.2% 9096 ± 84%
latency_stats.max.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
588552 ± 32% -74.2% 151873 ± 37%
latency_stats.sum.ep_poll.SyS_epoll_wait.do_syscall_64.return_from_SYSCALL_64
74.20 ±203% +12326.8% 9220 ± 82%
latency_stats.sum.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
160550 ± 14%-100.0% 0.00 ± -1% meminfo.AnonHugePages
204792 ± 0%-100.0% 0.00 ± -1% meminfo.CmaFree
204800 ± 0%-100.0% 0.00 ± -1% meminfo.CmaTotal
3041 ± 0% +13.4% 3449 ± 0% meminfo.KernelStack
51198 ± 0%-100.0% 0.00 ± -1% proc-vmstat.nr_free_cma
3033 ± 1% +13.6% 3446 ± 0% proc-vmstat.nr_kernel_stack
73394 ± 9% +8258.9%6134982 ± 2% proc-vmstat.numa_hit
73394 ± 9% +8258.9%6134982 ± 2% proc-vmstat.numa_local
67006 ± 9% +9043.7%6126912 ± 2% proc-vmstat.pgfault
11161 ± 7%-100.0% 0.00 ± -1%
proc-vmstat.thp_deferred_split_page
11217 ± 7%-100.0% 0.00 ± -1% proc-vmstat.thp_fault_alloc
7.16 ± 23%+257.2% 25.58 ± 12% time.elapsed_time
7.16 ± 23%+257.2% 25.58 ± 12% time.elapsed_time.max
1223 ± 10%+199.9% 3667 ± 15% time.involuntary_context_switches
61828 ± 2% +10106.0%6310202 ± 0% time.minor_page_faults
pft.faults_per_sec_per_cpu
1e+06 ++--*--+
90 ++*.. .. |
| *: ..|
80 ++ : : : ...*|
70 ++ ...* : : : *...|
*...: : : : |
60 ++ : : :: |
50 ++ : : : : |
40 ++ : : : :|
| : : : :|
30 ++ : : : : |
20 O+ O : O :O: O : O OO
