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Date: Tue, 03 Jun 2014 18:08:41 +0800
From: Jet Chen <jet.chen@...el.com>
To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
CC: LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Fengguang Wu <fengguang.wu@...el.com>
Subject: [rcu] 5057f55e543: -23.5% qperf.udp.recv_bw
Hi Paul,
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/fixes
commit 5057f55e543b7859cfd26bc281291795eac93f8a ("rcu: Bind RCU grace-period kthreads if NO_HZ_FULL")
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.127e+09 ~ 0% -23.5% 1.628e+09 ~ 4% bens/qperf/600s
2.127e+09 ~ 0% -23.5% 1.628e+09 ~ 4% TOTAL qperf.udp.recv_bw
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.128e+09 ~ 0% -23.3% 1.633e+09 ~ 4% bens/qperf/600s
2.128e+09 ~ 0% -23.3% 1.633e+09 ~ 4% TOTAL qperf.udp.send_bw
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.101e+10 ~ 2% -18.7% 1.707e+10 ~ 2% bens/iperf/300s-tcp
2.101e+10 ~ 2% -18.7% 1.707e+10 ~ 2% TOTAL iperf.tcp.sender.bps
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.101e+10 ~ 2% -18.7% 1.707e+10 ~ 2% bens/iperf/300s-tcp
2.101e+10 ~ 2% -18.7% 1.707e+10 ~ 2% TOTAL iperf.tcp.receiver.bps
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
1.331e+09 ~ 2% -5.8% 1.255e+09 ~ 2% bens/qperf/600s
2.4e+09 ~ 6% -30.4% 1.671e+09 ~12% brickland3/qperf/600s
2.384e+09 ~ 7% -12.1% 2.096e+09 ~ 3% lkp-sb03/qperf/600s
6.115e+09 ~ 5% -17.9% 5.022e+09 ~ 6% TOTAL qperf.sctp.bw
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.83e+09 ~ 1% -12.5% 2.476e+09 ~ 3% bens/qperf/600s
2.83e+09 ~ 1% -12.5% 2.476e+09 ~ 3% TOTAL qperf.tcp.bw
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
2.272e+08 ~ 1% -13.3% 1.97e+08 ~ 2% bens/qperf/600s
2.272e+08 ~ 1% -13.3% 1.97e+08 ~ 2% TOTAL proc-vmstat.pgalloc_dma32
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
53062 ~ 2% -35.1% 34464 ~ 3% bens/qperf/600s
109531 ~13% +46.9% 160928 ~ 5% brickland3/qperf/600s
67902 ~ 1% +13.8% 77302 ~ 3% lkp-sb03/qperf/600s
230496 ~ 7% +18.3% 272694 ~ 4% TOTAL softirqs.RCU
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
80344 ~ 1% -26.2% 59325 ~ 2% bens/qperf/600s
80344 ~ 1% -26.2% 59325 ~ 2% TOTAL softirqs.SCHED
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
1036 ~ 4% -17.6% 853 ~ 4% brickland3/qperf/600s
1036 ~ 4% -17.6% 853 ~ 4% TOTAL proc-vmstat.nr_page_table_pages
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
48.12 ~ 0% -11.7% 42.46 ~ 6% brickland3/qperf/600s
48.12 ~ 0% -11.7% 42.46 ~ 6% TOTAL turbostat.%pc2
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
74689352 ~ 1% -13.3% 64771743 ~ 2% bens/qperf/600s
74689352 ~ 1% -13.3% 64771743 ~ 2% TOTAL proc-vmstat.pgalloc_normal
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
3.019e+08 ~ 1% -13.3% 2.618e+08 ~ 2% bens/qperf/600s
3.019e+08 ~ 1% -13.3% 2.618e+08 ~ 2% TOTAL proc-vmstat.pgfree
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
23538414 ~ 0% -12.9% 20506157 ~ 2% bens/qperf/600s
23538414 ~ 0% -12.9% 20506157 ~ 2% TOTAL proc-vmstat.numa_local
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
23538414 ~ 0% -12.9% 20506157 ~ 2% bens/qperf/600s
23538414 ~ 0% -12.9% 20506157 ~ 2% TOTAL proc-vmstat.numa_hit
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
12789 ~ 1% -10.9% 11391 ~ 2% bens/qperf/600s
12789 ~ 1% -10.9% 11391 ~ 2% TOTAL softirqs.HRTIMER
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
481253 ~ 0% -8.9% 438624 ~ 0% bens/qperf/600s
481253 ~ 0% -8.9% 438624 ~ 0% TOTAL softirqs.TIMER
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
1297 ~33% +565.9% 8640 ~ 7% bens/iperf/300s-tcp
2788 ~ 3% +588.8% 19204 ~ 4% bens/qperf/600s
1191 ~ 5% +1200.9% 15493 ~ 4% brickland3/qperf/600s
1135 ~26% +1195.9% 14709 ~ 4% lkp-sb03/qperf/600s
6411 ~13% +805.3% 58047 ~ 4% TOTAL time.involuntary_context_switches
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
72398 ~ 1% -5.4% 68503 ~ 0% bens/qperf/600s
8789 ~ 4% +22.3% 10749 ~15% lkp-sb03/qperf/600s
81187 ~ 1% -2.4% 79253 ~ 2% TOTAL vmstat.system.in
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
141174 ~ 1% -5.4% 133551 ~ 0% bens/qperf/600s
143982 ~ 1% -4.4% 137600 ~ 0% brickland3/qperf/600s
285156 ~ 1% -4.9% 271152 ~ 0% TOTAL vmstat.system.cs
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
42351859 ~ 0% -5.3% 40114932 ~ 0% bens/qperf/600s
43015383 ~ 1% -4.4% 41143092 ~ 0% brickland3/qperf/600s
85367242 ~ 1% -4.8% 81258025 ~ 0% TOTAL time.voluntary_context_switches
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
146 ~ 0% -2.2% 143 ~ 0% bens/qperf/600s
147 ~ 1% -4.8% 140 ~ 1% brickland3/qperf/600s
293 ~ 0% -3.5% 283 ~ 0% TOTAL time.percent_of_cpu_this_job_got
71a9b26963f8c2d 5057f55e543b7859cfd26bc28
--------------- -------------------------
872 ~ 0% -2.3% 853 ~ 0% bens/qperf/600s
874 ~ 1% -4.6% 834 ~ 1% brickland3/qperf/600s
1747 ~ 0% -3.4% 1687 ~ 0% TOTAL time.system_time
Legend:
~XX% - stddev percent
[+-]XX% - change percent
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,
Jet
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