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Date: Tue, 4 Mar 2014 09:00:25 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Alex Shi <alex.shi@...aro.org>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [sched/balance] 598143917: -1.8% turbostat.Pkg_W
Alex,
FYI, we noticed the below changes on commit 598143917dc5ecf11f0764de4166ee7c98e90aff
("sched: only do load balance on tick_do_timer_cpu") in your git tree
https://github.com/alexshi/power-scheduling.git single-balance
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
63743 ~ 0% -82.4% 11200 ~ 2% lkp-nex05/micro/will-it-scale/futex2
63430 ~ 0% -83.4% 10546 ~ 1% lkp-nex05/micro/will-it-scale/signal1
60358 ~ 0% -80.6% 11704 ~ 4% lkp-snb01/micro/will-it-scale/sched_yield
187532 ~ 0% -82.2% 33451 ~ 2% TOTAL interrupts.RES
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
197848 ~ 1% -97.5% 5000 ~ 5% lkp-nex05/micro/will-it-scale/futex2
192607 ~ 7% -96.8% 6186 ~31% lkp-nex05/micro/will-it-scale/signal1
86509 ~ 5% -96.1% 3399 ~ 9% lkp-snb01/micro/will-it-scale/sched_yield
476965 ~ 4% -96.9% 14586 ~17% TOTAL softirqs.SCHED
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
103938 ~ 1% -36.2% 66267 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
103938 ~ 1% -36.2% 66267 ~ 0% TOTAL cpuidle.C7-SNB.usage
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
5193 ~11% +7.7% 5595 ~10% lkp-nex05/micro/will-it-scale/futex2
5193 ~11% +7.7% 5595 ~10% TOTAL numa-vmstat.node1.nr_slab_unreclaimable
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
20777 ~11% +7.7% 22382 ~10% lkp-nex05/micro/will-it-scale/futex2
20777 ~11% +7.7% 22382 ~10% TOTAL numa-meminfo.node1.SUnreclaim
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
215721 ~ 3% -16.4% 180390 ~ 2% lkp-nex05/micro/will-it-scale/futex2
235264 ~ 2% -18.9% 190850 ~ 3% lkp-nex05/micro/will-it-scale/signal1
450985 ~ 2% -17.7% 371241 ~ 2% TOTAL cpuidle.C3-NHM.usage
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
19.88 ~ 0% +12.5% 22.38 ~ 2% lkp-nex05/micro/will-it-scale/signal1
20.65 ~ 0% +24.5% 25.70 ~ 1% lkp-snb01/micro/will-it-scale/sched_yield
40.53 ~ 0% +18.6% 48.08 ~ 1% TOTAL turbostat.%c1
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
261584 ~ 8% -9.8% 235897 ~ 5% lkp-nex05/micro/will-it-scale/futex2
261584 ~ 8% -9.8% 235897 ~ 5% TOTAL numa-numastat.node1.local_node
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
261584 ~ 8% -9.8% 235897 ~ 5% lkp-nex05/micro/will-it-scale/futex2
261584 ~ 8% -9.8% 235897 ~ 5% TOTAL numa-numastat.node1.numa_hit
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
9292 ~ 3% -8.0% 8545 ~ 4% lkp-snb01/micro/will-it-scale/sched_yield
9292 ~ 3% -8.0% 8545 ~ 4% TOTAL slabinfo.anon_vma.active_objs
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
9292 ~ 3% -7.8% 8563 ~ 4% lkp-snb01/micro/will-it-scale/sched_yield
9292 ~ 3% -7.8% 8563 ~ 4% TOTAL slabinfo.anon_vma.num_objs
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
204033 ~ 1% -8.6% 186466 ~ 3% lkp-snb01/micro/will-it-scale/sched_yield
204033 ~ 1% -8.6% 186466 ~ 3% TOTAL softirqs.RCU
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
34331 ~ 5% +4.7% 35960 ~ 4% lkp-nex05/micro/will-it-scale/futex2
34331 ~ 5% +4.7% 35960 ~ 4% TOTAL numa-meminfo.node1.Slab
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
683581 ~ 0% -9.3% 620065 ~ 1% lkp-snb01/micro/will-it-scale/sched_yield
683581 ~ 0% -9.3% 620065 ~ 1% TOTAL softirqs.TIMER
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
4.902e+09 ~ 0% +9.9% 5.39e+09 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
4.902e+09 ~ 0% +9.9% 5.39e+09 ~ 0% TOTAL cpuidle.C7-SNB.time
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
3900 ~ 0% +349.4% 17527 ~ 2% lkp-nex05/micro/will-it-scale/futex2
3930 ~ 1% +258.6% 14091 ~20% lkp-nex05/micro/will-it-scale/signal1
143678 ~42% +4.8e+05% 6.93e+08 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
151509 ~40% +4.6e+05% 6.93e+08 ~ 0% TOTAL time.involuntary_context_switches
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
884 ~ 1% +8.3% 957 ~ 1% lkp-nex05/micro/will-it-scale/futex2
883 ~ 0% +9.4% 967 ~ 2% lkp-nex05/micro/will-it-scale/signal1
2405 ~25% +2.1e+05% 5129828 ~ 5% lkp-snb01/micro/will-it-scale/sched_yield
4173 ~15% +1.2e+05% 5131753 ~ 5% TOTAL vmstat.system.cs
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
250 ~ 4% +29.1% 323 ~ 8% lkp-snb01/micro/will-it-scale/sched_yield
250 ~ 4% +29.1% 323 ~ 8% TOTAL time.user_time
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
2819 ~ 0% -7.9% 2597 ~ 0% lkp-nex05/micro/will-it-scale/futex2
2811 ~ 0% -5.9% 2644 ~ 1% lkp-nex05/micro/will-it-scale/signal1
1267 ~ 0% -22.9% 978 ~ 2% lkp-snb01/micro/will-it-scale/sched_yield
6898 ~ 0% -9.8% 6219 ~ 1% TOTAL time.system_time
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
905 ~ 0% -7.9% 833 ~ 0% lkp-nex05/micro/will-it-scale/futex2
902 ~ 0% -5.7% 850 ~ 1% lkp-nex05/micro/will-it-scale/signal1
489 ~ 0% -14.3% 419 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
2296 ~ 0% -8.4% 2103 ~ 0% TOTAL time.percent_of_cpu_this_job_got
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
45.10 ~ 0% -4.8% 42.94 ~ 0% lkp-nex05/micro/will-it-scale/futex2
45.04 ~ 0% -5.1% 42.73 ~ 1% lkp-nex05/micro/will-it-scale/signal1
50.62 ~ 0% -10.0% 45.56 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
140.76 ~ 0% -6.8% 131.22 ~ 0% TOTAL turbostat.%c0
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
2380 ~ 2% +15.7% 2753 ~13% lkp-nex05/micro/will-it-scale/signal1
2380 ~ 2% +15.7% 2753 ~13% TOTAL boottime.idle
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
7975 ~ 0% -6.2% 7480 ~ 0% lkp-nex05/micro/will-it-scale/futex2
8022 ~ 0% -6.9% 7465 ~ 0% lkp-nex05/micro/will-it-scale/signal1
15997 ~ 0% -6.6% 14946 ~ 0% TOTAL vmstat.system.in
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
42.69 ~ 2% +15.0% 49.08 ~14% lkp-nex05/micro/will-it-scale/signal1
42.69 ~ 2% +15.0% 49.08 ~14% TOTAL boottime.boot
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
121 ~ 0% -2.2% 119 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
121 ~ 0% -2.2% 119 ~ 0% TOTAL turbostat.Cor_W
bc575710efe937e 598143917dc5ecf11f0764de4
--------------- -------------------------
148 ~ 0% -1.8% 145 ~ 0% lkp-snb01/micro/will-it-scale/sched_yield
148 ~ 0% -1.8% 145 ~ 0% TOTAL turbostat.Pkg_W
time.system_time
2850 ++------------------------------------------------------------------+
| |
2800 *+.*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..* |
| |
| |
2750 ++ |
| O |
2700 ++ |
| |
2650 O+ O |
| O O O O
| O O O O O |
2600 ++ O O O O |
| O O O O O O O |
2550 ++-------------O----------------------------------------------------+
time.percent_of_cpu_this_job_got
910 ++-------------------------------------------------------------------+
*..*..*..*..*..*..*..*..*..*..*..*..*..*.. .*.. .* |
900 ++ *. *. |
890 ++ |
| |
880 ++ O |
870 ++ |
| |
860 ++ O |
850 O+ |
| O O O O O O O
840 ++ O O O O O O |
830 ++ O O O |
| O O O O |
820 ++-------------O-----------------------------------------------------+
time.involuntary_context_switches
20000 ++-------------O---------------------------------------------------+
| O O O O |
18000 ++ O O O O O |
16000 ++ O O O O O |
| O O O O O O
14000 O+ O |
12000 ++ |
| |
10000 ++ O |
8000 ++ |
| |
6000 ++ |
4000 *+. .*.. .*. .*..*.. .*.. .*.. |
| *..*. *. *. *..*..*..*..*. *. * |
2000 ++-----------------------------------------------------------------+
turbostat.%c0
45.5 ++------------------------------------------------------------------+
*..*..*..*..*..*..*..*..*..*..*..*.*..*.. *.. |
45 ++ .. *..* |
| * |
44.5 ++ |
| |
44 ++ |
| |
43.5 ++ |
| O O O O O |
43 O+ O O |
| O O O O O O O O O O |
42.5 ++ O O |
| O O
42 ++-------------------O----------------------------------O-----------+
vmstat.system.in
8100 ++------------------------------------------------------------------+
*..*.. .*..*..*..*..*.. .*..*.*..*.. .*.. .* |
8000 ++ *..*. *. *. *. |
7900 ++ |
| |
7800 ++ |
| |
7700 ++ |
| |
7600 O+ O O O |
7500 ++ O O O O O O |
| O O O O O O O O O |
7400 ++ O O O
| O O |
7300 ++------------------------------------------------------------------+
Thanks,
Fengguang
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