Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 31 Jan 2024 22:08:20 +0800 | From | kernel test robot <> | Subject | [linus:master] [block] 53889bcaf5: stress-ng.ioprio.ops_per_sec 13.0% improvement |
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Hello,
kernel test robot noticed a 13.0% improvement of stress-ng.ioprio.ops_per_sec on:
commit: 53889bcaf536b3abedeaf104019877cee37dd08b ("block: make __get_task_ioprio() easier to read") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory parameters:
nr_threads: 10% disk: 1HDD testtime: 60s fs: btrfs test: ioprio cpufreq_governor: performance
Details are as below: -------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240131/202401311609.2c8c0628-oliver.sang@intel.com
========================================================================================= compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/1HDD/btrfs/x86_64-rhel-8.3/10%/debian-11.1-x86_64-20220510.cgz/lkp-icl-2sp8/ioprio/stress-ng/60s
commit: 3b7cb74547 ("block: move __get_task_ioprio() into header file") 53889bcaf5 ("block: make __get_task_ioprio() easier to read")
3b7cb745473aec72 53889bcaf536b3abedeaf104019 ---------------- --------------------------- %stddev %change %stddev \ | \ 31039 ± 50% +62.9% 50565 ± 30% numa-vmstat.node1.nr_anon_pages 0.01 ± 20% -35.7% 0.00 ± 21% perf-sched.sch_delay.avg.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 70.30 -3.2% 68.07 turbostat.RAMWatt 14275 ±109% +173.4% 39022 ± 46% numa-meminfo.node1.AnonHugePages 124137 ± 50% +62.9% 202248 ± 30% numa-meminfo.node1.AnonPages 111.17 ± 16% -68.2% 35.33 ± 27% perf-c2c.DRAM.local 221.33 ± 5% -56.2% 97.00 ± 10% perf-c2c.DRAM.remote 524510 ± 8% +25.5% 658460 ± 10% sched_debug.cpu.max_idle_balance_cost.max 3643 ±165% +494.7% 21671 ± 34% sched_debug.cpu.max_idle_balance_cost.stddev 4756555 +13.0% 5374750 stress-ng.ioprio.ops 79272 +13.0% 89575 stress-ng.ioprio.ops_per_sec 4.52 -31.6% 3.09 ± 8% perf-stat.i.MPKI 3.514e+09 +6.2% 3.734e+09 perf-stat.i.branch-instructions 0.31 ± 6% -0.1 0.25 ± 7% perf-stat.i.branch-miss-rate% 12495630 ± 4% -12.9% 10889062 ± 6% perf-stat.i.branch-misses 9.01 -2.0 7.03 ± 8% perf-stat.i.cache-miss-rate% 73180840 -32.5% 49400992 ± 8% perf-stat.i.cache-misses 8.118e+08 -13.4% 7.029e+08 perf-stat.i.cache-references 1.41 +1.6% 1.43 perf-stat.i.cpi 328.29 ± 3% +46.7% 481.44 ± 6% perf-stat.i.cycles-between-cache-misses 3.862e+09 +6.8% 4.123e+09 perf-stat.i.dTLB-loads 0.00 -0.0 0.00 ± 4% perf-stat.i.dTLB-store-miss-rate% 1.695e+09 +11.5% 1.891e+09 perf-stat.i.dTLB-stores 1.658e+10 -1.8% 1.628e+10 perf-stat.i.instructions 154.35 +5.7% 163.21 perf-stat.i.metric.M/sec 7769868 ± 5% -66.9% 2575037 ± 8% perf-stat.i.node-load-misses 1891321 ± 12% -67.4% 616722 ± 38% perf-stat.i.node-loads 4.42 -31.3% 3.03 ± 7% perf-stat.overall.MPKI 0.36 ± 5% -0.1 0.29 ± 6% perf-stat.overall.branch-miss-rate% 9.02 -2.0 7.03 ± 8% perf-stat.overall.cache-miss-rate% 1.39 +1.6% 1.42 perf-stat.overall.cpi 315.95 +48.7% 469.87 ± 7% perf-stat.overall.cycles-between-cache-misses 0.00 -0.0 0.00 ± 4% perf-stat.overall.dTLB-store-miss-rate% 0.72 -1.6% 0.71 perf-stat.overall.ipc 3.455e+09 +6.2% 3.671e+09 perf-stat.ps.branch-instructions 12275780 ± 4% -12.8% 10699106 ± 6% perf-stat.ps.branch-misses 71968656 -32.5% 48582093 ± 8% perf-stat.ps.cache-misses 7.982e+08 -13.4% 6.912e+08 perf-stat.ps.cache-references 3.797e+09 +6.8% 4.054e+09 perf-stat.ps.dTLB-loads 1.667e+09 +11.5% 1.859e+09 perf-stat.ps.dTLB-stores 1.63e+10 -1.8% 1.601e+10 perf-stat.ps.instructions 7640492 ± 5% -66.9% 2532136 ± 8% perf-stat.ps.node-load-misses 1859653 ± 12% -67.4% 606316 ± 38% perf-stat.ps.node-loads 9.886e+11 -1.8% 9.707e+11 perf-stat.total.instructions 0.59 ± 2% +0.0 0.63 ± 2% perf-profile.calltrace.cycles-pp.__generic_file_write_iter.generic_file_write_iter.do_iter_readv_writev.do_iter_write.vfs_writev 0.63 ± 2% +0.0 0.68 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.fsync 0.62 ± 4% +0.0 0.68 ± 4% perf-profile.calltrace.cycles-pp.import_iovec.vfs_writev.__x64_sys_pwritev.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.13 +0.1 1.18 ± 2% perf-profile.calltrace.cycles-pp.filemap_get_entry.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter 1.52 +0.1 1.62 perf-profile.calltrace.cycles-pp.__filemap_get_folio.simple_write_begin.generic_perform_write.generic_file_write_iter.do_iter_readv_writev 1.59 +0.1 1.69 perf-profile.calltrace.cycles-pp.simple_write_begin.generic_perform_write.generic_file_write_iter.do_iter_readv_writev.do_iter_write 1.10 ± 3% +0.1 1.22 ± 2% perf-profile.calltrace.cycles-pp.security_task_getioprio.__do_sys_ioprio_get.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 1.39 ± 2% +0.1 1.52 ± 3% perf-profile.calltrace.cycles-pp.fault_in_readable.fault_in_iov_iter_readable.generic_perform_write.generic_file_write_iter.do_iter_readv_writev 1.60 ± 2% +0.1 1.74 ± 2% perf-profile.calltrace.cycles-pp.fault_in_iov_iter_readable.generic_perform_write.generic_file_write_iter.do_iter_readv_writev.do_iter_write 0.35 ± 70% +0.2 0.54 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.syscall 1.60 ± 3% +0.2 1.79 ± 4% perf-profile.calltrace.cycles-pp.copy_page_from_iter_atomic.generic_perform_write.generic_file_write_iter.do_iter_readv_writev.do_iter_write 7.02 +0.6 7.62 ± 2% perf-profile.calltrace.cycles-pp.generic_perform_write.generic_file_write_iter.do_iter_readv_writev.do_iter_write.vfs_writev 8.19 +0.7 8.89 ± 2% perf-profile.calltrace.cycles-pp.generic_file_write_iter.do_iter_readv_writev.do_iter_write.vfs_writev.__x64_sys_pwritev 8.54 +0.7 9.26 ± 2% perf-profile.calltrace.cycles-pp.do_iter_readv_writev.do_iter_write.vfs_writev.__x64_sys_pwritev.do_syscall_64 9.20 +0.8 9.95 ± 2% perf-profile.calltrace.cycles-pp.do_iter_write.vfs_writev.__x64_sys_pwritev.do_syscall_64.entry_SYSCALL_64_after_hwframe 52.90 ± 2% +6.3 59.21 perf-profile.calltrace.cycles-pp._raw_spin_lock.get_task_ioprio.__do_sys_ioprio_get.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.20 ± 3% +0.0 0.22 ± 2% perf-profile.children.cycles-pp.syscall_enter_from_user_mode 0.14 ± 7% +0.0 0.18 ± 13% perf-profile.children.cycles-pp.up_write 0.30 ± 5% +0.0 0.33 ± 5% perf-profile.children.cycles-pp.__fsnotify_parent 0.42 ± 2% +0.0 0.46 ± 3% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.61 ± 2% +0.0 0.66 ± 3% perf-profile.children.cycles-pp.__generic_file_write_iter 1.15 +0.1 1.20 ± 2% perf-profile.children.cycles-pp.filemap_get_entry 0.32 ± 4% +0.1 0.38 ± 8% perf-profile.children.cycles-pp.__radix_tree_lookup 0.90 ± 2% +0.1 0.97 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 0.42 ± 4% +0.1 0.49 ± 6% perf-profile.children.cycles-pp.find_task_by_vpid 1.56 +0.1 1.64 perf-profile.children.cycles-pp.__filemap_get_folio 1.60 +0.1 1.70 perf-profile.children.cycles-pp.simple_write_begin 1.49 ± 2% +0.1 1.62 ± 3% perf-profile.children.cycles-pp.fault_in_readable 1.64 ± 2% +0.2 1.80 ± 3% perf-profile.children.cycles-pp.fault_in_iov_iter_readable 1.45 ± 3% +0.2 1.63 perf-profile.children.cycles-pp.security_task_getioprio 1.61 ± 3% +0.2 1.80 ± 4% perf-profile.children.cycles-pp.copy_page_from_iter_atomic 7.08 +0.6 7.68 ± 2% perf-profile.children.cycles-pp.generic_perform_write 8.22 +0.7 8.92 ± 2% perf-profile.children.cycles-pp.generic_file_write_iter 8.56 +0.7 9.27 ± 2% perf-profile.children.cycles-pp.do_iter_readv_writev 9.21 +0.8 9.97 ± 2% perf-profile.children.cycles-pp.do_iter_write 62.57 +1.3 63.83 perf-profile.children.cycles-pp.get_task_ioprio 53.95 ± 2% +6.2 60.16 perf-profile.children.cycles-pp._raw_spin_lock 9.16 ± 5% -5.0 4.15 ± 2% perf-profile.self.cycles-pp.get_task_ioprio 9.84 ± 9% -2.2 7.62 ± 4% perf-profile.self.cycles-pp.__do_sys_ioprio_get 0.16 ± 5% +0.0 0.18 ± 4% perf-profile.self.cycles-pp.syscall_enter_from_user_mode 0.18 ± 2% +0.0 0.21 ± 5% perf-profile.self.cycles-pp.fault_in_iov_iter_readable 0.49 +0.0 0.52 ± 2% perf-profile.self.cycles-pp.filemap_get_entry 0.29 ± 6% +0.0 0.33 ± 6% perf-profile.self.cycles-pp.__fsnotify_parent 0.88 ± 2% +0.1 0.93 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.31 ± 3% +0.1 0.37 ± 8% perf-profile.self.cycles-pp.__radix_tree_lookup 1.08 ± 4% +0.1 1.21 perf-profile.self.cycles-pp.security_task_getioprio 1.44 ± 2% +0.1 1.57 ± 3% perf-profile.self.cycles-pp.fault_in_readable 1.60 ± 3% +0.2 1.79 ± 4% perf-profile.self.cycles-pp.copy_page_from_iter_atomic 48.20 ± 4% +7.5 55.66 perf-profile.self.cycles-pp._raw_spin_lock
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
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