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Message-ID: <20190218075442.GI29177@shao2-debian>
Date: Mon, 18 Feb 2019 15:54:42 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Wei Yang <richardw.yang@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [LKP] [driver core] 570d020012: will-it-scale.per_thread_ops -12.2%
regression
Greeting,
FYI, we noticed a -12.2% regression of will-it-scale.per_thread_ops due to commit:
commit: 570d0200123fb4f809aa2f6226e93a458d664d70 ("driver core: move device->knode_class to device_private")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: will-it-scale
on test machine: 288 threads Knights Mill with 80G memory
with following parameters:
nr_task: 100%
mode: thread
test: unlink2
cpufreq_governor: performance
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
In addition to that, the commit also has significant impact on the following tests:
+------------------+---------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_thread_ops -29.9% regression |
| test machine | 288 threads Knights Mill with 80G memory |
| test parameters | cpufreq_governor=performance |
| | mode=thread |
| | nr_task=100% |
| | test=signal1 |
+------------------+---------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_thread_ops -16.5% regression |
| test machine | 288 threads Knights Mill with 80G memory |
| test parameters | cpufreq_governor=performance |
| | mode=thread |
| | nr_task=100% |
| | test=open1 |
+------------------+---------------------------------------------------------------+
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:
gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-knm01/unlink2/will-it-scale
commit:
4bd4e92cfe ("sysfs: fix blank line coding style warning")
570d020012 ("driver core: move device->knode_class to device_private")
4bd4e92cfe6d2af7 570d0200123fb4f809aa2f6226
---------------- --------------------------
%stddev %change %stddev
\ | \
937.00 -12.2% 823.00 will-it-scale.per_thread_ops
906625 -1.7% 891438 will-it-scale.time.involuntary_context_switches
269989 -12.2% 237096 will-it-scale.workload
17104244 -12.3% 15001702 softirqs.RCU
6886 -1.7% 6768 vmstat.system.cs
2.088e+08 ± 17% -56.9% 90059912 ± 57% cpuidle.C1.time
683051 ± 15% -42.5% 392628 ± 40% cpuidle.C1.usage
4.519e+08 ± 6% +27.8% 5.777e+08 ± 9% cpuidle.C6.time
648490 ± 14% -42.7% 371724 ± 43% turbostat.C1
0.23 ± 18% -0.1 0.10 ± 62% turbostat.C1%
0.42 ± 9% +0.1 0.55 ± 11% turbostat.C6%
0.41 ± 5% -18.1% 0.34 ± 16% turbostat.CPU%c1
0.30 ± 6% +27.9% 0.39 ± 13% turbostat.CPU%c6
5.22 ± 13% -1.9 3.35 ± 4% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
5.27 ± 13% -1.9 3.40 ± 3% perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_open
4.71 ± 14% -1.8 2.92 ± 4% perf-profile.calltrace.cycles-pp.unlink
4.58 ± 15% -1.8 2.81 ± 4% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.unlink
4.56 ± 15% -1.8 2.80 ± 4% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink
4.40 ± 15% -1.8 2.64 ± 5% perf-profile.calltrace.cycles-pp.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink
3.18 ± 23% -1.6 1.53 ± 9% perf-profile.calltrace.cycles-pp.shmem_mknod.path_openat.do_filp_open.do_sys_open.do_syscall_64
1.70 ± 19% -0.7 0.95 ± 14% perf-profile.calltrace.cycles-pp.shmem_get_inode.shmem_mknod.path_openat.do_filp_open.do_sys_open
1.47 ± 20% -0.7 0.76 ± 18% perf-profile.calltrace.cycles-pp.evict.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink
1.43 ± 23% -0.7 0.73 ± 18% perf-profile.calltrace.cycles-pp.new_inode.shmem_get_inode.shmem_mknod.path_openat.do_filp_open
1.57 ± 5% -0.5 1.04 ± 57% perf-profile.calltrace.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt
0.58 -0.1 0.52 ± 2% perf-profile.calltrace.cycles-pp.filename_parentat.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe.unlink
2.31 ± 16% +0.7 3.00 ± 9% perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt
2.04 ± 17% +0.7 2.76 ± 7% perf-profile.calltrace.cycles-pp.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt
2.09 ± 17% +0.7 2.82 ± 7% perf-profile.calltrace.cycles-pp.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt
44.55 +1.7 46.29 perf-profile.calltrace.cycles-pp.__GI___libc_close
44.26 +1.8 46.07 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__GI___libc_close
44.24 +1.8 46.05 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_close
43.67 +1.8 45.49 perf-profile.calltrace.cycles-pp.__close_fd.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_close
43.80 +1.9 45.67 perf-profile.calltrace.cycles-pp.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_close
43.67 +1.9 45.61 perf-profile.calltrace.cycles-pp.__alloc_fd.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_open
43.11 +2.0 45.13 perf-profile.calltrace.cycles-pp._raw_spin_lock.__close_fd.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe
43.17 +2.0 45.22 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__close_fd.__x64_sys_close.do_syscall_64
43.08 +2.1 45.17 perf-profile.calltrace.cycles-pp._raw_spin_lock.__alloc_fd.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
43.13 +2.1 45.26 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__alloc_fd.do_sys_open.do_syscall_64
12.29 -10.0% 11.06 ± 2% perf-stat.i.MPKI
8.564e+09 -1.7% 8.421e+09 perf-stat.i.branch-instructions
1.59 -0.1 1.46 ± 2% perf-stat.i.branch-miss-rate%
1.356e+08 -9.7% 1.225e+08 perf-stat.i.branch-misses
16.95 +1.1 18.02 perf-stat.i.cache-miss-rate%
74122780 -6.2% 69544118 perf-stat.i.cache-misses
4.377e+08 -11.8% 3.862e+08 perf-stat.i.cache-references
6523 -1.6% 6416 perf-stat.i.context-switches
12.02 +1.6% 12.21 perf-stat.i.cpi
5778 +6.2% 6134 perf-stat.i.cycles-between-cache-misses
0.33 -0.0 0.29 ± 2% perf-stat.i.iTLB-load-miss-rate%
1.185e+08 -15.6% 1e+08 ± 2% perf-stat.i.iTLB-load-misses
3.555e+10 -2.0% 3.484e+10 perf-stat.i.iTLB-loads
3.563e+10 -2.0% 3.492e+10 perf-stat.i.instructions
300.74 +16.2% 349.51 ± 2% perf-stat.i.instructions-per-iTLB-miss
0.08 -1.6% 0.08 perf-stat.i.ipc
12.28 -10.0% 11.06 ± 2% perf-stat.overall.MPKI
1.58 -0.1 1.45 ± 2% perf-stat.overall.branch-miss-rate%
16.94 +1.1 18.01 perf-stat.overall.cache-miss-rate%
12.02 +1.6% 12.21 perf-stat.overall.cpi
5776 +6.2% 6132 perf-stat.overall.cycles-between-cache-misses
0.33 -0.0 0.29 ± 2% perf-stat.overall.iTLB-load-miss-rate%
300.68 +16.2% 349.34 ± 2% perf-stat.overall.instructions-per-iTLB-miss
0.08 -1.6% 0.08 perf-stat.overall.ipc
39542686 +11.7% 44150058 perf-stat.overall.path-length
8.53e+09 -1.7% 8.388e+09 perf-stat.ps.branch-instructions
1.351e+08 -9.7% 1.22e+08 perf-stat.ps.branch-misses
73835513 -6.2% 69273046 perf-stat.ps.cache-misses
4.36e+08 -11.8% 3.847e+08 perf-stat.ps.cache-references
6498 -1.7% 6390 perf-stat.ps.context-switches
1.18e+08 -15.6% 99644821 ± 2% perf-stat.ps.iTLB-load-misses
3.541e+10 -2.0% 3.47e+10 perf-stat.ps.iTLB-loads
3.549e+10 -2.0% 3.479e+10 perf-stat.ps.instructions
1.067e+13 -1.9% 1.047e+13 perf-stat.total.instructions
595740 ± 18% -43.0% 339338 ± 28% sched_debug.cfs_rq:/.MIN_vruntime.avg
4833300 ± 8% -31.2% 3327465 ± 24% sched_debug.cfs_rq:/.MIN_vruntime.stddev
15804 ± 7% -28.3% 11329 ± 22% sched_debug.cfs_rq:/.load.avg
1096777 -24.1% 832275 ± 27% sched_debug.cfs_rq:/.load.max
108529 ± 4% -27.8% 78378 ± 26% sched_debug.cfs_rq:/.load.stddev
12.36 ± 3% -11.3% 10.96 sched_debug.cfs_rq:/.load_avg.avg
522.40 ± 8% -32.1% 354.80 ± 23% sched_debug.cfs_rq:/.load_avg.max
35.08 ± 7% -28.4% 25.13 ± 21% sched_debug.cfs_rq:/.load_avg.stddev
595740 ± 18% -43.0% 339338 ± 28% sched_debug.cfs_rq:/.max_vruntime.avg
4833300 ± 8% -31.2% 3327465 ± 24% sched_debug.cfs_rq:/.max_vruntime.stddev
0.12 ± 9% -21.9% 0.10 ± 18% sched_debug.cfs_rq:/.nr_running.stddev
77.95 ± 6% +37.6% 107.25 ± 19% sched_debug.cfs_rq:/.nr_spread_over.max
7.10 ± 2% +20.5% 8.55 ± 15% sched_debug.cfs_rq:/.nr_spread_over.stddev
4.39 -15.0% 3.73 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.avg
468.00 -35.1% 303.60 ± 30% sched_debug.cfs_rq:/.runnable_load_avg.max
28.56 -35.1% 18.54 ± 29% sched_debug.cfs_rq:/.runnable_load_avg.stddev
15797 ± 7% -28.3% 11323 ± 22% sched_debug.cfs_rq:/.runnable_weight.avg
1096533 -24.1% 832050 ± 27% sched_debug.cfs_rq:/.runnable_weight.max
108522 ± 4% -27.8% 78365 ± 26% sched_debug.cfs_rq:/.runnable_weight.stddev
772.59 ± 6% -28.1% 555.30 ± 5% sched_debug.cpu.clock.stddev
772.58 ± 6% -28.1% 555.30 ± 5% sched_debug.cpu.clock_task.stddev
4.43 -15.1% 3.76 ± 8% sched_debug.cpu.cpu_load[0].avg
28.58 -33.9% 18.88 ± 27% sched_debug.cpu.cpu_load[0].stddev
4.51 ± 3% -16.6% 3.76 ± 8% sched_debug.cpu.cpu_load[1].avg
29.07 ± 6% -35.8% 18.66 ± 28% sched_debug.cpu.cpu_load[1].stddev
4.45 ± 2% -15.7% 3.75 ± 8% sched_debug.cpu.cpu_load[2].avg
28.36 ± 4% -34.7% 18.53 ± 28% sched_debug.cpu.cpu_load[2].stddev
4.40 -15.0% 3.73 ± 8% sched_debug.cpu.cpu_load[3].avg
27.95 ± 3% -34.1% 18.43 ± 28% sched_debug.cpu.cpu_load[3].stddev
4.34 ± 2% -14.3% 3.72 ± 8% sched_debug.cpu.cpu_load[4].avg
456.00 ± 3% -34.2% 300.10 ± 29% sched_debug.cpu.cpu_load[4].max
27.74 ± 2% -33.6% 18.41 ± 28% sched_debug.cpu.cpu_load[4].stddev
15602 ± 7% -20.4% 12420 ± 19% sched_debug.cpu.load.avg
106214 ± 3% -19.2% 85804 ± 18% sched_debug.cpu.load.stddev
0.00 ± 4% -24.5% 0.00 ± 3% sched_debug.cpu.next_balance.stddev
0.50 ± 26% -54.8% 0.23 ± 79% sched_debug.rt_rq:/.rt_time.avg
143.90 ± 26% -54.8% 65.01 ± 79% sched_debug.rt_rq:/.rt_time.max
8.46 ± 26% -54.8% 3.82 ± 79% sched_debug.rt_rq:/.rt_time.stddev
will-it-scale.per_thread_ops
1000 +-+------------------------------------------------------------------+
| |
|.. +.. .+ +.. .+.. .+ + |
950 +-+ + +. + .. .+..+.. .+. + + +.. .. |
| + + + + + + + |
| + |
900 +-+ |
| O O |
850 +-+ O O O O |
O O O O O O O O O |
| O O O O O O O
800 +-+O O O |
| O |
| O |
750 +-+------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-knm01: 288 threads Knights Mill with 80G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-knm01/signal1/will-it-scale
commit:
4bd4e92cfe ("sysfs: fix blank line coding style warning")
570d020012 ("driver core: move device->knode_class to device_private")
4bd4e92cfe6d2af7 570d0200123fb4f809aa2f6226
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:4 25% 1:4 dmesg.WARNING:at#for_ip_interrupt_entry/0x
%stddev %change %stddev
\ | \
266.75 ± 2% -29.9% 187.00 will-it-scale.per_thread_ops
131.40 ± 6% -29.3% 92.91 ± 3% will-it-scale.time.user_time
76931 ± 2% -29.9% 53963 will-it-scale.workload
788152 ± 8% +17.8% 928405 ± 5% cpuidle.C6.usage
33255 ± 4% -8.2% 30514 ± 2% numa-meminfo.node1.Slab
34856762 +14.5% 39908744 softirqs.TIMER
0.00 ± 26% +0.0 0.01 ± 67% mpstat.cpu.soft%
0.28 ± 3% -0.0 0.23 ± 2% mpstat.cpu.usr%
981.00 ± 7% -12.8% 855.00 ± 2% slabinfo.skbuff_ext_cache.active_objs
981.00 ± 7% -12.8% 855.00 ± 2% slabinfo.skbuff_ext_cache.num_objs
714927 ± 11% +21.5% 868290 ± 5% turbostat.C6
1.71 ± 5% +39.9% 2.39 turbostat.RAMWatt
1121 ± 2% -23.8% 854.06 ± 4% sched_debug.cfs_rq:/.exec_clock.stddev
20.90 ± 11% +42.0% 29.68 ± 17% sched_debug.cfs_rq:/.nr_spread_over.avg
54.08 ± 4% +18.2% 63.93 ± 7% sched_debug.cfs_rq:/.util_est_enqueued.stddev
349403 ± 73% +94.9% 680874 ± 2% sched_debug.cpu.avg_idle.min
860.45 ± 4% -37.1% 540.88 ± 7% sched_debug.cpu.clock.stddev
860.45 ± 4% -37.1% 540.88 ± 7% sched_debug.cpu.clock_task.stddev
5355 ± 14% +21.7% 6517 sched_debug.cpu.curr->pid.max
0.00 ± 3% -36.6% 0.00 ± 6% sched_debug.cpu.next_balance.stddev
16.16 -0.2 16.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.__set_current_blocked.signal_setup_done.do_signal.exit_to_usermode_loop
16.14 -0.2 15.99 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.__set_current_blocked.signal_setup_done.do_signal
32.16 -0.1 32.04 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask
16.12 -0.1 16.01 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.get_signal.do_signal.exit_to_usermode_loop
16.13 -0.1 16.01 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.get_signal.do_signal.exit_to_usermode_loop.do_syscall_64
32.17 -0.1 32.05 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask.do_syscall_64
16.11 -0.1 16.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.__set_current_blocked.__x64_sys_rt_sigreturn.do_syscall_64
16.12 -0.1 16.01 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.__set_current_blocked.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe
16.63 -0.1 16.54 perf-profile.calltrace.cycles-pp.handler
16.49 -0.1 16.40 perf-profile.calltrace.cycles-pp.__set_current_blocked.signal_setup_done.do_signal.exit_to_usermode_loop.do_syscall_64
16.57 -0.1 16.48 perf-profile.calltrace.cycles-pp.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler
16.58 -0.1 16.49 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.handler
16.58 -0.1 16.49 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler
16.57 -0.1 16.49 perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler
16.52 -0.1 16.44 perf-profile.calltrace.cycles-pp.signal_setup_done.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
16.63 -0.1 16.56 perf-profile.calltrace.cycles-pp.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise
16.65 -0.1 16.58 perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise
16.52 -0.1 16.46 perf-profile.calltrace.cycles-pp.get_signal.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.59 ± 4% +0.1 0.71 ± 2% perf-profile.calltrace.cycles-pp.smp_apic_timer_interrupt.apic_timer_interrupt.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask
0.64 ± 5% +0.1 0.77 ± 2% perf-profile.calltrace.cycles-pp.apic_timer_interrupt.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask.do_syscall_64
0.27 ±100% +0.3 0.59 ± 2% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.__set_current_blocked.sigprocmask
4.55 ± 2% -8.7% 4.15 perf-stat.i.MPKI
0.52 -0.1 0.47 perf-stat.i.branch-miss-rate%
47148684 -8.9% 42963996 perf-stat.i.branch-misses
35569495 ± 2% -4.9% 33832492 perf-stat.i.cache-misses
1.66e+08 -7.7% 1.533e+08 perf-stat.i.cache-references
12.38 -1.2% 12.24 perf-stat.i.cpi
12726 ± 2% +5.1% 13374 perf-stat.i.cycles-between-cache-misses
0.09 ± 4% -0.0 0.07 perf-stat.i.iTLB-load-miss-rate%
32470934 ± 5% -14.8% 27651795 perf-stat.i.iTLB-load-misses
1128 ± 4% +18.6% 1339 perf-stat.i.instructions-per-iTLB-miss
4.54 ± 2% -8.7% 4.15 perf-stat.overall.MPKI
0.52 -0.1 0.47 ± 2% perf-stat.overall.branch-miss-rate%
12.38 -1.2% 12.24 perf-stat.overall.cpi
12722 ± 2% +5.1% 13367 perf-stat.overall.cycles-between-cache-misses
0.09 ± 4% -0.0 0.07 perf-stat.overall.iTLB-load-miss-rate%
1127 ± 4% +18.5% 1336 perf-stat.overall.instructions-per-iTLB-miss
1.414e+08 ± 2% +43.9% 2.035e+08 ± 2% perf-stat.overall.path-length
46584988 -9.3% 42262634 perf-stat.ps.branch-misses
35172756 ± 2% -5.0% 33400721 perf-stat.ps.cache-misses
1.641e+08 -7.8% 1.513e+08 perf-stat.ps.cache-references
32116706 ± 5% -15.0% 27304782 perf-stat.ps.iTLB-load-misses
***************************************************************************************************
lkp-knm01: 288 threads Knights Mill with 80G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-knm01/open1/will-it-scale
commit:
4bd4e92cfe ("sysfs: fix blank line coding style warning")
570d020012 ("driver core: move device->knode_class to device_private")
4bd4e92cfe6d2af7 570d0200123fb4f809aa2f6226
---------------- --------------------------
%stddev %change %stddev
\ | \
945.00 -16.5% 788.75 will-it-scale.per_thread_ops
568697 ± 7% -21.3% 447754 will-it-scale.time.involuntary_context_switches
303.55 ± 2% -7.2% 281.60 ± 2% will-it-scale.time.user_time
272400 -16.6% 227268 will-it-scale.workload
0.08 ± 9% -0.0 0.05 ± 5% mpstat.cpu.soft%
192099 -11.9% 169161 ± 3% slabinfo.filp.active_objs
5043716 -12.1% 4431600 ± 2% softirqs.RCU
2.31 ± 2% +11.2% 2.58 turbostat.RAMWatt
4620 ± 6% -19.2% 3732 vmstat.system.cs
5458 +1.4% 5532 proc-vmstat.nr_inactive_anon
5458 +1.4% 5532 proc-vmstat.nr_zone_inactive_anon
7.27 ± 4% -0.8 6.50 ± 4% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.native_queued_spin_lock_slowpath._raw_spin_lock
6.02 ± 5% -0.6 5.40 ± 5% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.native_queued_spin_lock_slowpath
1.22 ± 2% -0.2 1.07 ± 2% perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_open
1.16 ± 2% -0.1 1.02 ± 2% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
50.11 -0.1 49.98 perf-profile.calltrace.cycles-pp.__GI___libc_open
47.70 +0.2 47.86 perf-profile.calltrace.cycles-pp._raw_spin_lock.__alloc_fd.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
47.89 +0.2 48.12 perf-profile.calltrace.cycles-pp._raw_spin_lock.__close_fd.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe
306780 ± 31% -46.2% 165114 ± 27% sched_debug.cfs_rq:/.MIN_vruntime.avg
37943697 ± 12% -23.6% 28986155 ± 20% sched_debug.cfs_rq:/.MIN_vruntime.max
3199728 ± 21% -33.9% 2114259 ± 22% sched_debug.cfs_rq:/.MIN_vruntime.stddev
1368 ± 7% -17.0% 1135 ± 9% sched_debug.cfs_rq:/.exec_clock.stddev
10913 ± 25% -29.9% 7650 ± 10% sched_debug.cfs_rq:/.load.avg
76190 ± 22% -21.5% 59825 ± 7% sched_debug.cfs_rq:/.load.stddev
306780 ± 31% -46.2% 165114 ± 27% sched_debug.cfs_rq:/.max_vruntime.avg
37943697 ± 12% -23.6% 28986155 ± 20% sched_debug.cfs_rq:/.max_vruntime.max
3199728 ± 21% -33.9% 2114259 ± 22% sched_debug.cfs_rq:/.max_vruntime.stddev
10906 ± 25% -29.9% 7642 ± 10% sched_debug.cfs_rq:/.runnable_weight.avg
76186 ± 22% -21.5% 59800 ± 7% sched_debug.cfs_rq:/.runnable_weight.stddev
234073 ± 39% +134.5% 548907 ± 71% sched_debug.cfs_rq:/.spread0.avg
1117 ± 11% -26.5% 821.87 ± 5% sched_debug.cpu.clock.stddev
1117 ± 11% -26.5% 821.87 ± 5% sched_debug.cpu.clock_task.stddev
0.00 ± 8% -25.6% 0.00 ± 6% sched_debug.cpu.next_balance.stddev
2333 ± 3% -14.3% 1998 sched_debug.cpu.nr_switches.avg
1323 ± 4% -20.1% 1057 sched_debug.cpu.nr_switches.min
2160 ± 4% -12.5% 1891 ± 2% sched_debug.cpu.sched_count.avg
1179 ± 5% -17.0% 978.15 sched_debug.cpu.sched_count.min
1.55 ± 66% -100.0% 0.00 sched_debug.cpu.sched_goidle.min
912.99 ± 4% -18.1% 747.65 sched_debug.cpu.ttwu_count.avg
590.45 ± 5% -21.5% 463.60 ± 2% sched_debug.cpu.ttwu_count.min
835.45 ± 5% -19.8% 670.09 sched_debug.cpu.ttwu_local.avg
561.95 ± 5% -22.5% 435.70 ± 3% sched_debug.cpu.ttwu_local.min
6.47 -8.2% 5.93 ± 3% perf-stat.i.MPKI
8.137e+09 +1.8% 8.282e+09 perf-stat.i.branch-instructions
0.85 -0.1 0.77 ± 2% perf-stat.i.branch-miss-rate%
69084658 -7.5% 63892585 ± 2% perf-stat.i.branch-misses
44409176 -6.8% 41391448 ± 3% perf-stat.i.cache-misses
2.151e+08 -6.9% 2.003e+08 ± 3% perf-stat.i.cache-references
4250 ± 7% -19.1% 3436 perf-stat.i.context-switches
13.05 -1.8% 12.82 perf-stat.i.cpi
9785 +7.2% 10490 ± 3% perf-stat.i.cycles-between-cache-misses
0.20 -0.0 0.18 ± 6% perf-stat.i.iTLB-load-miss-rate%
67639103 -11.5% 59865979 ± 6% perf-stat.i.iTLB-load-misses
3.324e+10 +1.4% 3.371e+10 perf-stat.i.iTLB-loads
3.328e+10 +1.5% 3.379e+10 perf-stat.i.instructions
492.13 +15.2% 566.96 ± 6% perf-stat.i.instructions-per-iTLB-miss
0.08 +1.8% 0.08 perf-stat.i.ipc
6.46 -8.3% 5.93 ± 3% perf-stat.overall.MPKI
0.85 -0.1 0.77 ± 2% perf-stat.overall.branch-miss-rate%
13.05 -1.8% 12.82 perf-stat.overall.cpi
9782 +7.1% 10480 ± 3% perf-stat.overall.cycles-between-cache-misses
0.20 -0.0 0.18 ± 6% perf-stat.overall.iTLB-load-miss-rate%
492.04 +15.2% 566.73 ± 6% perf-stat.overall.instructions-per-iTLB-miss
0.08 +1.8% 0.08 perf-stat.overall.ipc
36640385 +21.7% 44597360 perf-stat.overall.path-length
8.103e+09 +1.8% 8.249e+09 perf-stat.ps.branch-instructions
68811380 -7.5% 63646780 ± 2% perf-stat.ps.branch-misses
44229668 -6.8% 41229829 ± 3% perf-stat.ps.cache-misses
2.142e+08 -6.9% 1.995e+08 ± 3% perf-stat.ps.cache-references
4233 ± 7% -19.1% 3423 perf-stat.ps.context-switches
67364890 -11.5% 59634016 ± 6% perf-stat.ps.iTLB-load-misses
3.315e+10 +1.5% 3.365e+10 perf-stat.ps.instructions
9.98e+12 +1.5% 1.013e+13 perf-stat.total.instructions
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
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