From: kernel test robot <oliver.sang@intel.com>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <oliver.sang@intel.com>
Subject: [frederic-dynticks:timers/anna] [timers] 5bbb5400a9: unixbench.throughput 2.1% improvement
Date: Thu, 22 Feb 2024 10:35:10 +0800 [thread overview]
Message-ID: <202402221047.8338ced3-oliver.sang@intel.com> (raw)
Hello,
kernel test robot noticed a 2.1% improvement of unixbench.throughput on:
commit: 5bbb5400a9f70dae4069290b581b1d2c934c932a ("timers: Keep the pinned timers separate from the others")
https://git.kernel.org/cgit/linux/kernel/git/frederic/linux-dynticks.git timers/anna
testcase: unixbench
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory
parameters:
runtime: 300s
nr_task: 1
test: syscall
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240222/202402221047.8338ced3-oliver.sang@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase:
gcc-12/performance/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/300s/lkp-csl-d02/syscall/unixbench
commit:
f2234c1add ("timers: Split next timer interrupt logic")
5bbb5400a9 ("timers: Keep the pinned timers separate from the others")
f2234c1add92fe1b 5bbb5400a9f70dae4069290b581
---------------- ---------------------------
%stddev %change %stddev
\ | \
3.99 ± 8% +14.4% 4.57 ± 8% perf-sched.wait_time.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
2744609 +2.1% 2801712 unixbench.throughput
1.071e+09 +2.0% 1.093e+09 unixbench.workload
2.65 ± 10% -0.5 2.12 ± 8% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.umask
0.29 ±100% +0.4 0.67 ± 7% perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.syscall
0.29 ±101% +0.4 0.70 ± 10% perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.getuid
0.00 +0.2 0.21 ± 15% perf-profile.children.cycles-pp.__get_next_timer_interrupt
5.67 ± 12% -2.4 3.24 ± 6% perf-profile.self.cycles-pp.do_syscall_64
0.00 +0.1 0.09 ± 14% perf-profile.self.cycles-pp.__get_next_timer_interrupt
6.425e+08 +1.8% 6.539e+08 perf-stat.i.branch-instructions
9.814e+08 +1.9% 9.997e+08 perf-stat.i.dTLB-loads
6.276e+08 +1.9% 6.397e+08 perf-stat.i.dTLB-stores
325643 ± 2% +7.6% 350447 ± 3% perf-stat.i.iTLB-loads
3.314e+09 +1.8% 3.372e+09 perf-stat.i.instructions
555.44 +3.8% 576.68 perf-stat.i.instructions-per-iTLB-miss
0.75 +1.8% 0.76 perf-stat.i.ipc
62.51 +1.9% 63.67 perf-stat.i.metric.M/sec
1.25 -1.7% 1.22 perf-stat.overall.cpi
0.80 +1.7% 0.82 perf-stat.overall.ipc
6.408e+08 +1.8% 6.522e+08 perf-stat.ps.branch-instructions
9.789e+08 +1.9% 9.971e+08 perf-stat.ps.dTLB-loads
6.259e+08 +1.9% 6.381e+08 perf-stat.ps.dTLB-stores
324768 ± 2% +7.6% 349509 ± 3% perf-stat.ps.iTLB-loads
3.305e+09 +1.8% 3.363e+09 perf-stat.ps.instructions
1.292e+12 +1.8% 1.315e+12 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.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2024-02-22 2:35 UTC|newest]
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