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Date: Sat, 21 Sep 2019 23:25:22 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Alexander Duyck <alexander.duyck@...il.com>
Cc: virtio-dev@...ts.oasis-open.org, kvm@...r.kernel.org,
mst@...hat.com, david@...hat.com, dave.hansen@...el.com,
linux-kernel@...r.kernel.org, willy@...radead.org,
mhocko@...nel.org, linux-mm@...ck.org, vbabka@...e.cz,
akpm@...ux-foundation.org, mgorman@...hsingularity.net,
linux-arm-kernel@...ts.infradead.org, osalvador@...e.de,
yang.zhang.wz@...il.com, pagupta@...hat.com,
konrad.wilk@...cle.com, nitesh@...hat.com, riel@...riel.com,
lcapitulino@...hat.com, wei.w.wang@...el.com, aarcange@...hat.com,
pbonzini@...hat.com, dan.j.williams@...el.com,
alexander.h.duyck@...ux.intel.com, lkp@...org
Subject: [mm] 0f5b256b2c: will-it-scale.per_process_ops -1.2% regression
Greeting,
FYI, we noticed a -1.2% regression of will-it-scale.per_process_ops due to commit:
commit: 0f5b256b2c35bf7d0faf874ed01227b4b7cb0118 ("[PATCH v10 3/6] mm: Introduce Reported pages")
url: https://github.com/0day-ci/linux/commits/Alexander-Duyck/mm-virtio-Provide-support-for-unused-page-reporting/20190919-015544
in testcase: will-it-scale
on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory
with following parameters:
nr_task: 100%
mode: process
test: page_fault2
cpufreq_governor: performance
ucode: 0xb000036
test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
gcc-7/performance/x86_64-rhel-7.6/process/100%/debian-x86_64-2019-05-14.cgz/lkp-bdw-ep6/page_fault2/will-it-scale/0xb000036
commit:
e10e2ab29d ("mm: Use zone and order instead of free area in free_list manipulators")
0f5b256b2c ("mm: Introduce Reported pages")
e10e2ab29d6d4ee2 0f5b256b2c35bf7d0faf874ed01
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
1:4 -25% :4 dmesg.WARNING:at_ip___perf_sw_event/0x
1:4 -25% :4 dmesg.WARNING:at_ip__fsnotify_parent/0x
3:4 1% 3:4 perf-profile.calltrace.cycles-pp.error_entry.testcase
3:4 1% 3:4 perf-profile.children.cycles-pp.error_entry
2:4 1% 2:4 perf-profile.self.cycles-pp.error_entry
%stddev %change %stddev
\ | \
83249 -1.2% 82239 will-it-scale.per_process_ops
7325970 -1.2% 7237126 will-it-scale.workload
1137 ± 2% -2.8% 1105 ± 2% vmstat.system.cs
9785 +11.8% 10942 ± 5% softirqs.CPU0.SCHED
7282 ± 30% +30.5% 9504 ± 9% softirqs.CPU2.RCU
2.211e+09 -1.2% 2.185e+09 proc-vmstat.numa_hit
2.211e+09 -1.2% 2.185e+09 proc-vmstat.numa_local
2.213e+09 -1.2% 2.186e+09 proc-vmstat.pgalloc_normal
2.204e+09 -1.2% 2.178e+09 proc-vmstat.pgfault
2.212e+09 -1.2% 2.185e+09 proc-vmstat.pgfree
232.75 ± 21% +359.8% 1070 ± 66% interrupts.37:IR-PCI-MSI.1572868-edge.eth0-TxRx-3
232.75 ± 21% +359.8% 1070 ± 66% interrupts.CPU16.37:IR-PCI-MSI.1572868-edge.eth0-TxRx-3
34.00 ± 76% +447.1% 186.00 ±114% interrupts.CPU18.RES:Rescheduling_interrupts
318.00 ± 42% -65.8% 108.75 ± 77% interrupts.CPU28.RES:Rescheduling_interrupts
173.50 ± 32% +143.7% 422.75 ± 28% interrupts.CPU36.RES:Rescheduling_interrupts
70.75 ± 73% +726.1% 584.50 ± 60% interrupts.CPU39.RES:Rescheduling_interrupts
66.75 ± 38% +78.7% 119.25 ± 19% interrupts.CPU83.RES:Rescheduling_interrupts
286.00 ± 93% -88.0% 34.25 ± 97% interrupts.CPU84.RES:Rescheduling_interrupts
41205135 -3.7% 39666469 perf-stat.i.branch-misses
1096 ± 2% -2.9% 1064 ± 2% perf-stat.i.context-switches
3.60 +3.8% 3.74 ± 3% perf-stat.i.cpi
34.38 ± 2% -4.6% 32.80 ± 2% perf-stat.i.cpu-migrations
547.67 +323.8% 2321 ± 80% perf-stat.i.cycles-between-cache-misses
71391394 -3.5% 68859821 ± 2% perf-stat.i.dTLB-store-misses
14877534 -3.1% 14415629 ± 2% perf-stat.i.iTLB-load-misses
7256992 -3.0% 7036423 ± 2% perf-stat.i.minor-faults
1.272e+08 -3.3% 1.231e+08 perf-stat.i.node-loads
2.62 +1.0 3.64 ± 25% perf-stat.i.node-store-miss-rate%
847863 +4.6% 887118 perf-stat.i.node-store-misses
31585215 -3.4% 30501990 ± 2% perf-stat.i.node-stores
7256096 -3.0% 7035925 ± 2% perf-stat.i.page-faults
0.33 ± 3% +0.0 0.34 ± 2% perf-stat.overall.node-load-miss-rate%
2.61 +0.2 2.83 ± 2% perf-stat.overall.node-store-miss-rate%
2791987 +1.1% 2822374 perf-stat.overall.path-length
41058236 -3.7% 39547998 perf-stat.ps.branch-misses
34.24 ± 2% -4.5% 32.69 perf-stat.ps.cpu-migrations
71150671 -3.5% 68679628 ± 2% perf-stat.ps.dTLB-store-misses
14827264 -3.0% 14377324 perf-stat.ps.iTLB-load-misses
7230962 -3.0% 7016784 ± 2% perf-stat.ps.minor-faults
1.268e+08 -3.2% 1.228e+08 perf-stat.ps.node-loads
844990 +4.7% 884796 perf-stat.ps.node-store-misses
31478503 -3.4% 30422235 ± 2% perf-stat.ps.node-stores
7230628 -3.0% 7016690 ± 2% perf-stat.ps.page-faults
4.10 -0.7 3.43 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.pagevec_lru_move_fn.__lru_cache_add.alloc_set_pte
4.13 -0.7 3.47 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.pagevec_lru_move_fn.__lru_cache_add.alloc_set_pte.finish_fault
5.35 -0.7 4.69 perf-profile.calltrace.cycles-pp.pagevec_lru_move_fn.__lru_cache_add.alloc_set_pte.finish_fault.__handle_mm_fault
5.44 -0.7 4.78 perf-profile.calltrace.cycles-pp.__lru_cache_add.alloc_set_pte.finish_fault.__handle_mm_fault.handle_mm_fault
7.50 -0.6 6.87 perf-profile.calltrace.cycles-pp.finish_fault.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault
7.41 -0.6 6.78 perf-profile.calltrace.cycles-pp.alloc_set_pte.finish_fault.__handle_mm_fault.handle_mm_fault.__do_page_fault
53.51 -0.3 53.17 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
53.93 -0.3 53.62 perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault.testcase
1.90 -0.3 1.60 ± 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.unmap_page_range
1.92 -0.3 1.62 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.unmap_page_range.unmap_vmas
54.98 -0.3 54.69 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault.testcase
55.33 -0.3 55.04 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault.testcase
61.72 -0.3 61.44 perf-profile.calltrace.cycles-pp.testcase
59.26 -0.2 59.03 perf-profile.calltrace.cycles-pp.page_fault.testcase
0.74 ± 2% -0.2 0.52 ± 3% perf-profile.calltrace.cycles-pp.__list_del_entry_valid.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.__handle_mm_fault
4.05 +0.0 4.09 perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap
4.08 +0.0 4.12 perf-profile.calltrace.cycles-pp.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap
4.10 +0.0 4.14 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap
1.59 +0.1 1.64 perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.__handle_mm_fault.handle_mm_fault.__do_page_fault
1.73 +0.1 1.78 perf-profile.calltrace.cycles-pp.__do_fault.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault
1.21 +0.1 1.28 perf-profile.calltrace.cycles-pp.find_lock_entry.shmem_getpage_gfp.shmem_fault.__do_fault.__handle_mm_fault
0.97 +0.1 1.03 perf-profile.calltrace.cycles-pp.find_get_entry.find_lock_entry.shmem_getpage_gfp.shmem_fault.__do_fault
1.38 +0.1 1.44 perf-profile.calltrace.cycles-pp.shmem_getpage_gfp.shmem_fault.__do_fault.__handle_mm_fault.handle_mm_fault
3.71 +0.1 3.79 perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region
3.64 +0.1 3.73 perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_flush_mmu.tlb_finish_mmu
33.13 +0.2 33.33 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap
33.12 +0.2 33.32 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.__do_munmap.__vm_munmap
31.65 +0.2 31.87 perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu.unmap_page_range.unmap_vmas.unmap_region
31.88 +0.2 32.11 perf-profile.calltrace.cycles-pp.tlb_flush_mmu.unmap_page_range.unmap_vmas.unmap_region.__do_munmap
37.24 +0.2 37.48 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.munmap
37.24 +0.2 37.48 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
37.24 +0.2 37.49 perf-profile.calltrace.cycles-pp.munmap
37.23 +0.2 37.48 perf-profile.calltrace.cycles-pp.__do_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
37.23 +0.2 37.48 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
37.23 +0.2 37.48 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.munmap
37.23 +0.2 37.48 perf-profile.calltrace.cycles-pp.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
28.96 +0.6 29.55 perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.tlb_flush_mmu.unmap_page_range.unmap_vmas
28.48 +0.6 29.07 perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_flush_mmu.unmap_page_range
30.94 +0.7 31.65 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.free_pcppages_bulk.free_unref_page_list.release_pages
31.01 +0.7 31.72 perf-profile.calltrace.cycles-pp._raw_spin_lock.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_flush_mmu
6.32 -1.0 5.30 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
5.45 -0.7 4.79 perf-profile.children.cycles-pp.__lru_cache_add
5.36 -0.7 4.70 perf-profile.children.cycles-pp.pagevec_lru_move_fn
7.46 -0.6 6.82 perf-profile.children.cycles-pp.alloc_set_pte
7.51 -0.6 6.88 perf-profile.children.cycles-pp.finish_fault
53.54 -0.3 53.20 perf-profile.children.cycles-pp.__handle_mm_fault
53.96 -0.3 53.65 perf-profile.children.cycles-pp.handle_mm_fault
55.00 -0.3 54.71 perf-profile.children.cycles-pp.__do_page_fault
55.34 -0.3 55.05 perf-profile.children.cycles-pp.do_page_fault
57.38 -0.3 57.12 perf-profile.children.cycles-pp.page_fault
62.64 -0.3 62.38 perf-profile.children.cycles-pp.testcase
0.99 -0.2 0.76 perf-profile.children.cycles-pp.__list_del_entry_valid
0.39 -0.0 0.36 ± 2% perf-profile.children.cycles-pp.__mod_lruvec_state
4.11 +0.0 4.14 perf-profile.children.cycles-pp.tlb_finish_mmu
1.60 +0.0 1.65 perf-profile.children.cycles-pp.shmem_fault
1.73 +0.1 1.79 perf-profile.children.cycles-pp.__do_fault
1.40 +0.1 1.46 perf-profile.children.cycles-pp.shmem_getpage_gfp
1.23 +0.1 1.29 perf-profile.children.cycles-pp.find_lock_entry
0.97 +0.1 1.03 perf-profile.children.cycles-pp.find_get_entry
33.13 +0.2 33.33 perf-profile.children.cycles-pp.unmap_vmas
33.13 +0.2 33.33 perf-profile.children.cycles-pp.unmap_page_range
37.24 +0.2 37.49 perf-profile.children.cycles-pp.munmap
37.23 +0.2 37.48 perf-profile.children.cycles-pp.__do_munmap
37.23 +0.2 37.48 perf-profile.children.cycles-pp.__x64_sys_munmap
37.23 +0.2 37.48 perf-profile.children.cycles-pp.__vm_munmap
37.23 +0.2 37.48 perf-profile.children.cycles-pp.unmap_region
37.33 +0.2 37.57 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
37.33 +0.2 37.57 perf-profile.children.cycles-pp.do_syscall_64
35.97 +0.3 36.22 perf-profile.children.cycles-pp.tlb_flush_mmu
35.83 +0.3 36.09 perf-profile.children.cycles-pp.release_pages
32.70 +0.7 33.38 perf-profile.children.cycles-pp.free_unref_page_list
32.15 +0.7 32.84 perf-profile.children.cycles-pp.free_pcppages_bulk
64.33 +0.9 65.19 perf-profile.children.cycles-pp._raw_spin_lock
0.98 -0.2 0.75 perf-profile.self.cycles-pp.__list_del_entry_valid
0.95 -0.0 0.92 perf-profile.self.cycles-pp.free_pcppages_bulk
0.14 ± 3% -0.0 0.13 ± 3% perf-profile.self.cycles-pp.__mod_lruvec_state
0.26 +0.0 0.27 perf-profile.self.cycles-pp.handle_mm_fault
0.17 ± 4% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.__count_memcg_events
0.62 +0.1 0.68 perf-profile.self.cycles-pp.find_get_entry
0.89 +0.2 1.13 perf-profile.self.cycles-pp.get_page_from_freelist
will-it-scale.per_process_ops
86000 +-+-----------------------------------------------------------------+
|.+.+.+..+.+.+.+.+.+.+.+..+.+.+.+.+.+.+.+..+.+.+.+.+.+.+.+..+ |
84000 +-+ + |
| +.+.+.|
| O O O |
82000 +-+ O O O O O O O O O O O O O O O O O O O |
| |
80000 +-+ |
| |
78000 +-+ O |
| O O |
| O O |
76000 +-+ |
O O |
74000 +-+-----------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
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,
Rong Chen
View attachment "config-5.3.0-03842-g0f5b256b2c35b" of type "text/plain" (199885 bytes)
View attachment "job-script" of type "text/plain" (7560 bytes)
View attachment "job.yaml" of type "text/plain" (5178 bytes)
View attachment "reproduce" of type "text/plain" (315 bytes)
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