Messages in this thread | | | Date | Fri, 25 Jul 2014 14:31:17 +0800 | From | Aaron Lu <> | Subject | [LKP] [net] 11ef7a8996d: +27.3% netperf.Throughput_Mbps |
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FYI, we noticed the below changes on
commit 11ef7a8996d5d433c9cd75d80651297eccbf6d42 ("net: Performance fix for process_backlog")
test case: lkp-t410/netperf/300s-200%-10K-SCTP_STREAM_MANY
68b7107b62983f2 11ef7a8996d5d433c9cd75d80 --------------- ------------------------- 1023 ~ 3% +27.3% 1302 ~ 0% TOTAL netperf.Throughput_Mbps 0.72 ~10% -91.4% 0.06 ~23% TOTAL turbostat.%c3 13385 ~12% -92.6% 987 ~12% TOTAL cpuidle.C6-NHM.usage 22745 ~10% -95.5% 1016 ~40% TOTAL cpuidle.C3-NHM.usage 42675736 ~12% -84.6% 6571705 ~19% TOTAL cpuidle.C6-NHM.time 88342 ~11% -82.1% 15811 ~ 9% TOTAL softirqs.SCHED 19148006 ~12% -95.7% 821873 ~27% TOTAL cpuidle.C3-NHM.time 439.94 ~10% -77.5% 99.05 ~ 5% TOTAL uptime.idle 1.35 ~ 6% -65.8% 0.46 ~24% TOTAL turbostat.%c6 4 ~23% +114.3% 9 ~ 0% TOTAL vmstat.procs.r 1680 ~ 3% +40.4% 2359 ~ 3% TOTAL proc-vmstat.nr_alloc_batch 447921 ~ 4% +36.2% 610047 ~ 0% TOTAL softirqs.TIMER 9.09 ~ 9% +27.6% 11.60 ~ 8% TOTAL perf-profile.cpu-cycles.memcpy.sctp_outq_flush.sctp_outq_uncork.sctp_cmd_interpreter.sctp_do_sm 2350916 ~ 4% +35.4% 3184088 ~ 0% TOTAL proc-vmstat.pgalloc_dma 7.82 ~ 9% +24.1% 9.71 ~ 4% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.sctp_user_addto_chunk.sctp_datamsg_from_user.sctp_sendmsg.inet_sendmsg 38837537 ~ 3% +27.1% 49358639 ~ 0% TOTAL proc-vmstat.numa_local 38837537 ~ 3% +27.1% 49358639 ~ 0% TOTAL proc-vmstat.numa_hit 50216 ~ 1% +17.0% 58745 ~ 6% TOTAL softirqs.RCU 1.41 ~ 4% +11.6% 1.58 ~ 1% TOTAL perf-profile.cpu-cycles.get_page_from_freelist.__alloc_pages_nodemask.alloc_kmem_pages_node.kmalloc_large_node.__kmalloc_node_track_caller 48539 ~ 1% -25.5% 36171 ~ 1% TOTAL vmstat.system.cs 75.64 ~ 4% +30.6% 98.82 ~ 0% TOTAL turbostat.%c0 3949 ~ 2% +13.4% 4478 ~ 0% TOTAL vmstat.system.in
Legend: ~XX% - stddev percent [+-]XX% - change percent
vmstat.system.cs
52000 ++------------------------------------------------------------------+ 50000 ++ * .* *. ** *. * *. | | .* + *.** *. : **.* .* .**.**. * + + *.* * + : * .**. *. .** 48000 ** * * * * * * * .* * * * ** | 46000 ++ * | | | 44000 ++ | 42000 ++ | 40000 ++ | | | 38000 +O O O | 36000 O+ O O O O OO OO OO O O O O O OO O OO O | | O O O O O O O | 34000 ++ O O O O | 32000 ++------------------------------------------------------------------+
[*] 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, Aaron echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor netserver netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K netperf -t SCTP_STREAM_MANY -c -C -l 300 -- -m 10K
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