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Date: Mon, 29 Dec 2014 14:57:31 +0800 From: Huang Ying <ying.huang@...el.com> To: Carlos Maiolino <cmaiolino@...hat.com> Cc: Dave Chinner <david@...morbit.com>, LKML <linux-kernel@...r.kernel.org>, lkp@...org Subject: [LKP] [xfs] dbe1b5ca263: +6.5% will-it-scale.per_thread_ops FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit dbe1b5ca26396b6c61d711c8ac4de13ebb02e9f6 ("xfs: Make xfs_vn_rename compliant with renameat2() syscall") testbox/testcase/testparams: lkp-nex05/will-it-scale/performance-pwrite1 v3.19-rc1 dbe1b5ca26396b6c61d711c8ac ---------------- -------------------------- %stddev %change %stddev \ | \ 1131870 ± 0% +6.5% 1205531 ± 0% will-it-scale.per_thread_ops 1209729 ± 0% +5.8% 1280184 ± 0% will-it-scale.per_process_ops 0.54 ± 0% -3.1% 0.53 ± 1% will-it-scale.scalability 1400 ± 30% +174.5% 3842 ± 34% sched_debug.cpu#36.nr_switches 810 ± 33% +154.2% 2060 ± 25% sched_debug.cpu#36.ttwu_count 163 ± 41% +96.6% 320 ± 42% sched_debug.cpu#2.ttwu_local 242 ± 38% +71.4% 416 ± 19% slabinfo.blkdev_queue.active_objs 137 ± 28% +99.3% 274 ± 22% sched_debug.cpu#26.ttwu_local 29 ± 44% +116.0% 63 ± 28% sched_debug.cfs_rq[50]:/.tg_load_contrib 1296 ± 34% +41.5% 1835 ± 19% sched_debug.cpu#63.ttwu_local 405 ± 30% -42.3% 234 ± 15% sched_debug.cpu#56.sched_goidle 314 ± 27% +43.6% 452 ± 11% slabinfo.blkdev_queue.num_objs 980 ± 28% -37.7% 611 ± 13% sched_debug.cpu#56.nr_switches 684 ± 25% +40.5% 962 ± 20% sched_debug.cpu#10.ttwu_count 1.03 ± 2% -38.8% 0.63 ± 7% perf-profile.cpu-cycles.current_kernel_time.file_update_time.__generic_file_write_iter.generic_file_write_iter.new_sync_write 838 ± 25% -33.1% 560 ± 14% sched_debug.cpu#60.nr_switches 4870 ± 19% +25.8% 6127 ± 14% sched_debug.cpu#63.nr_switches 1443 ± 10% +39.9% 2019 ± 23% sched_debug.cpu#2.sched_count 39 ± 20% +55.1% 61 ± 16% latency_stats.max.call_rwsem_down_write_failed.SyS_mprotect.system_call_fastpath 336 ± 33% -37.8% 209 ± 12% sched_debug.cpu#60.sched_goidle 2.27 ± 12% -33.6% 1.51 ± 2% perf-profile.cpu-cycles.rw_verify_area.vfs_write.sys_pwrite64.system_call_fastpath.__libc_pwrite 394 ± 19% -31.5% 270 ± 13% sched_debug.cpu#52.sched_goidle 986 ± 19% -25.0% 740 ± 11% sched_debug.cpu#52.nr_switches 2.25 ± 4% -28.4% 1.61 ± 6% perf-profile.cpu-cycles.security_file_permission.rw_verify_area.vfs_write.sys_pwrite64.system_call_fastpath 257 ± 15% +52.9% 394 ± 28% sched_debug.cpu#10.ttwu_local 1.24 ± 10% -26.7% 0.91 ± 8% perf-profile.cpu-cycles.selinux_file_permission.security_file_permission.rw_verify_area.vfs_write.sys_pwrite64 1.12 ± 6% -27.7% 0.81 ± 8% perf-profile.cpu-cycles.rw_verify_area.vfs_write.sys_pwrite64.system_call_fastpath.__libc_pwrite64 3385 ± 10% +8.9% 3687 ± 8% sched_debug.cpu#39.curr->pid 4.01 ± 0% +27.4% 5.11 ± 1% perf-profile.cpu-cycles.file_update_time.__generic_file_write_iter.generic_file_write_iter.new_sync_write.vfs_write 1.05 ± 2% -23.8% 0.80 ± 5% perf-profile.cpu-cycles.iov_iter_fault_in_readable.__generic_file_write_iter.generic_file_write_iter.new_sync_write.vfs_write 0.83 ± 3% +24.7% 1.03 ± 1% perf-profile.cpu-cycles.current_fs_time.file_update_time.__generic_file_write_iter.generic_file_write_iter.new_sync_write 0.88 ± 2% +15.2% 1.02 ± 2% perf-profile.cpu-cycles.__sb_end_write.vfs_write.sys_pwrite64.system_call_fastpath.__libc_pwrite64 0.99 ± 1% +14.5% 1.14 ± 1% perf-profile.cpu-cycles.system_call.__libc_pwrite 2.60 ± 2% +11.7% 2.91 ± 0% perf-profile.cpu-cycles.__srcu_read_lock.fsnotify.vfs_write.sys_pwrite64.system_call_fastpath 3.56 ± 6% +12.4% 4.00 ± 4% perf-profile.cpu-cycles.unlock_page.shmem_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter 252 ± 0% +7.8% 272 ± 1% time.user_time lkp-nex05: Nehalem-EX Memory: 192G will-it-scale.per_process_ops 1.4e+06 ++--O--------------O---------------------------------------------+ 1.38e+06 O+ O O | | O | 1.36e+06 ++ O | 1.34e+06 ++ | | | 1.32e+06 ++ O | 1.3e+06 ++ O O O | 1.28e+06 ++ O O O O O | | O O 1.26e+06 ++ | 1.24e+06 ++ | | | 1.22e+06 ++ .*...*...*...*...*...*..* | 1.2e+06 *+--*---*--------------------------------------------------------+ will-it-scale.per_thread_ops 1.32e+06 ++---------------------------------------------------------------+ 1.3e+06 ++ O O O | O O O | 1.28e+06 ++ O | 1.26e+06 ++ | | | 1.24e+06 ++ | 1.22e+06 ++ O O O | 1.2e+06 ++ O O O O O O O O | | 1.18e+06 ++ | 1.16e+06 ++ | | ..*... | 1.14e+06 *+.. .*...*...*...*. *..* | 1.12e+06 ++--*---*--------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample To reproduce: apt-get install ruby ruby-oj git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/setup-local job.yaml # the job file attached in this email bin/run-local job.yaml 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, Huang, Ying View attachment "job.yaml" of type "text/plain" (1491 bytes) View attachment "reproduce" of type "text/plain" (4767 bytes) _______________________________________________ LKP mailing list LKP@...ux.intel.com
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