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Date: Mon, 27 Oct 2014 10:18:22 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Catalin Marinas <catalin.marinas@....com>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Subject: [LKP] [futex] 76835b0ebf8: -12.1% will-it-scale.per_process_ops
FYI, we noticed the below changes on
commit 76835b0ebf8a7fe85beb03c75121419a7dec52f0 ("futex: Ensure get_futex_key_refs() always implies a barrier")
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751 testbox/testcase/testparams
---------------- -------------------------- ---------------------------
%stddev %change %stddev
\ | \
9204866 ± 0% -10.2% 8266680 ± 0% lkp-wsx01/will-it-scale/performance-futex3
11271283 ± 0% -12.1% 9911001 ± 0% nhm4/will-it-scale/performance-futex3
10185806 -11.1% 9051578 GEO-MEAN will-it-scale.per_process_ops
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
9211097 ± 0% -10.2% 8268370 ± 0% lkp-wsx01/will-it-scale/performance-futex3
11324367 ± 0% -12.0% 9969101 ± 0% nhm4/will-it-scale/performance-futex3
10213219 -11.1% 9078999 GEO-MEAN will-it-scale.per_thread_ops
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
0.63 ± 0% +6.3% 0.66 ± 0% lkp-wsx01/will-it-scale/performance-futex3
0.66 ± 0% +9.6% 0.72 ± 0% nhm4/will-it-scale/performance-futex3
0.64 +7.9% 0.69 GEO-MEAN will-it-scale.scalability
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
2.01 ± 1% +365.3% 9.35 ± 1% lkp-wsx01/will-it-scale/performance-futex3
1.67 ± 1% +509.7% 10.17 ± 3% nhm4/will-it-scale/performance-futex3
1.83 +432.6% 9.75 GEO-MEAN perf-profile.cpu-cycles.get_futex_key_refs.isra.11.futex_wake.do_futex.sys_futex.system_call_fastpath
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1 ± 34% +200.0% 4 ± 17% lkp-wsx01/will-it-scale/performance-futex3
1 +200.0% 4 GEO-MEAN sched_debug.cpu#63.nr_uninterruptible
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
161 ± 27% +159.0% 418 ± 29% lkp-wsx01/will-it-scale/performance-futex3
161 +159.0% 418 GEO-MEAN sched_debug.cpu#48.sched_goidle
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
395 ± 23% +146.2% 972 ± 27% lkp-wsx01/will-it-scale/performance-futex3
395 +146.2% 972 GEO-MEAN sched_debug.cpu#48.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
404 ± 23% +143.3% 984 ± 27% lkp-wsx01/will-it-scale/performance-futex3
404 +143.3% 984 GEO-MEAN sched_debug.cpu#48.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
434 ± 32% -68.0% 139 ± 20% lkp-wsx01/will-it-scale/performance-futex3
434 -68.0% 138 GEO-MEAN sched_debug.cpu#61.ttwu_local
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
5335 ± 48% -54.4% 2433 ± 43% lkp-wsx01/will-it-scale/performance-futex3
5335 -54.4% 2433 GEO-MEAN sched_debug.cpu#20.sched_goidle
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
498 ± 23% -54.4% 227 ± 25% lkp-wsx01/will-it-scale/performance-futex3
498 -54.4% 227 GEO-MEAN sched_debug.cpu#55.sched_goidle
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
576 ± 26% -46.8% 306 ± 34% lkp-wsx01/will-it-scale/performance-futex3
576 -46.8% 306 GEO-MEAN sched_debug.cpu#55.ttwu_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
0.47 ± 7% +119.7% 1.02 ± 5% nhm4/will-it-scale/performance-futex3
0.47 +119.7% 1.02 GEO-MEAN perf-profile.cpu-cycles.ret_from_sys_call.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
11216 ± 46% -49.6% 5648 ± 38% lkp-wsx01/will-it-scale/performance-futex3
11216 -49.6% 5648 GEO-MEAN sched_debug.cpu#20.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
11237 ± 46% -49.5% 5669 ± 38% lkp-wsx01/will-it-scale/performance-futex3
11237 -49.5% 5669 GEO-MEAN sched_debug.cpu#20.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1232 ± 27% -52.8% 581 ± 21% lkp-wsx01/will-it-scale/performance-futex3
1232 -52.8% 581 GEO-MEAN sched_debug.cpu#55.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
155 ± 36% +182.5% 438 ± 40% lkp-wsx01/will-it-scale/performance-futex3
155 +182.5% 438 GEO-MEAN sched_debug.cpu#48.ttwu_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1245 ± 27% -52.5% 591 ± 21% lkp-wsx01/will-it-scale/performance-futex3
1245 -52.5% 591 GEO-MEAN sched_debug.cpu#55.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1461 ± 31% -46.9% 776 ± 23% lkp-wsx01/will-it-scale/performance-futex3
1461 -46.9% 776 GEO-MEAN sched_debug.cpu#42.ttwu_local
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
856 ± 34% -50.2% 426 ± 31% lkp-wsx01/will-it-scale/performance-futex3
855 -50.2% 426 GEO-MEAN sched_debug.cpu#58.ttwu_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
926 ± 19% -41.0% 546 ± 24% lkp-wsx01/will-it-scale/performance-futex3
926 -41.0% 546 GEO-MEAN sched_debug.cpu#61.ttwu_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1593 ± 17% -45.1% 875 ± 20% lkp-wsx01/will-it-scale/performance-futex3
1593 -45.1% 875 GEO-MEAN sched_debug.cpu#61.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3667 ± 25% -38.3% 2263 ± 18% lkp-wsx01/will-it-scale/performance-futex3
3667 -38.3% 2262 GEO-MEAN sched_debug.cpu#42.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1604 ± 17% -44.8% 885 ± 20% lkp-wsx01/will-it-scale/performance-futex3
1604 -44.8% 885 GEO-MEAN sched_debug.cpu#61.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3680 ± 25% -38.1% 2279 ± 18% lkp-wsx01/will-it-scale/performance-futex3
3680 -38.1% 2279 GEO-MEAN sched_debug.cpu#42.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
402 ± 22% +45.4% 585 ± 29% lkp-wsx01/will-it-scale/performance-futex3
402 +45.4% 585 GEO-MEAN sched_debug.cpu#70.sched_goidle
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
153 ± 13% -35.3% 99 ± 22% nhm4/will-it-scale/performance-futex3
153 -35.3% 99 GEO-MEAN sched_debug.cpu#6.load
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
595 ± 21% +108.8% 1242 ± 40% lkp-wsx01/will-it-scale/performance-futex3
595 +108.8% 1242 GEO-MEAN sched_debug.cpu#70.ttwu_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1127 ± 31% -42.3% 651 ± 8% nhm4/will-it-scale/performance-futex3
1127 -42.3% 650 GEO-MEAN sched_debug.cfs_rq[3]:/.blocked_load_avg
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
16.48 ± 1% +56.0% 25.71 ± 2% nhm4/will-it-scale/performance-futex3
16.48 +56.0% 25.71 GEO-MEAN perf-profile.cpu-cycles.futex_wake.do_futex.sys_futex.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
575 ± 24% -39.7% 346 ± 21% lkp-wsx01/will-it-scale/performance-futex3
575 -39.7% 346 GEO-MEAN sched_debug.cpu#61.sched_goidle
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
534 ± 11% +63.0% 871 ± 35% lkp-wsx01/will-it-scale/performance-futex3
534 +63.0% 871 GEO-MEAN sched_debug.cpu#45.nr_switches
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
545 ± 11% +62.0% 883 ± 35% lkp-wsx01/will-it-scale/performance-futex3
545 +62.0% 882 GEO-MEAN sched_debug.cpu#45.sched_count
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
10 ± 26% -44.0% 5 ± 18% lkp-wsx01/will-it-scale/performance-futex3
10 -44.0% 5 GEO-MEAN sched_debug.cpu#72.cpu_load[0]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
827 ± 26% +55.5% 1286 ± 23% nhm4/will-it-scale/performance-futex3
826 +55.5% 1285 GEO-MEAN sched_debug.cfs_rq[4]:/.blocked_load_avg
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1245 ± 28% -38.8% 762 ± 8% nhm4/will-it-scale/performance-futex3
1245 -38.8% 762 GEO-MEAN sched_debug.cfs_rq[3]:/.tg_load_contrib
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
969 ± 22% +48.4% 1438 ± 20% nhm4/will-it-scale/performance-futex3
969 +48.4% 1438 GEO-MEAN sched_debug.cfs_rq[4]:/.tg_load_contrib
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
133 ± 11% -28.7% 95 ± 22% nhm4/will-it-scale/performance-futex3
133 -28.7% 95 GEO-MEAN sched_debug.cfs_rq[6]:/.load
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
799 ± 19% -34.8% 521 ± 26% nhm4/will-it-scale/performance-futex3
799 -34.8% 521 GEO-MEAN sched_debug.cfs_rq[2]:/.blocked_load_avg
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
906 ± 17% -30.8% 627 ± 21% nhm4/will-it-scale/performance-futex3
906 -30.8% 627 GEO-MEAN sched_debug.cfs_rq[2]:/.tg_load_contrib
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
70 ± 10% +21.7% 85 ± 9% nhm4/will-it-scale/performance-futex3
70 +21.7% 85 GEO-MEAN sched_debug.cpu#2.cpu_load[3]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3149 ± 11% -15.0% 2677 ± 10% lkp-wsx01/will-it-scale/performance-futex3
3149 -15.0% 2676 GEO-MEAN sched_debug.cpu#71.curr->pid
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
68 ± 12% +23.5% 84 ± 9% nhm4/will-it-scale/performance-futex3
68 +23.5% 83 GEO-MEAN sched_debug.cpu#2.cpu_load[4]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
214345 ± 13% +31.5% 281773 ± 13% nhm4/will-it-scale/performance-futex3
214345 +31.5% 281773 GEO-MEAN sched_debug.cfs_rq[2]:/.min_vruntime
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
38234 ± 5% -17.6% 31518 ± 1% nhm4/will-it-scale/performance-futex3
38234 -17.6% 31518 GEO-MEAN softirqs.RCU
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
37071 ± 15% +36.8% 50702 ± 15% nhm4/will-it-scale/performance-futex3
37071 +36.8% 50702 GEO-MEAN sched_debug.cfs_rq[2]:/.exec_clock
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
324067 ± 8% -18.2% 265084 ± 14% nhm4/will-it-scale/performance-futex3
324067 -18.2% 265084 GEO-MEAN sched_debug.cfs_rq[6]:/.min_vruntime
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
103 ± 5% -21.8% 81 ± 9% nhm4/will-it-scale/performance-futex3
103 -21.8% 81 GEO-MEAN sched_debug.cpu#6.cpu_load[2]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
114 ± 4% -21.6% 89 ± 12% nhm4/will-it-scale/performance-futex3
114 -21.6% 89 GEO-MEAN sched_debug.cpu#6.cpu_load[1]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
58381 ± 10% -23.2% 44812 ± 18% nhm4/will-it-scale/performance-futex3
58381 -23.2% 44812 GEO-MEAN sched_debug.cfs_rq[6]:/.exec_clock
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
82318 ± 11% -20.7% 65237 ± 13% nhm4/will-it-scale/performance-futex3
82318 -20.7% 65237 GEO-MEAN sched_debug.cpu#1.nr_load_updates
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
95 ± 7% -19.9% 76 ± 8% nhm4/will-it-scale/performance-futex3
95 -19.9% 76 GEO-MEAN sched_debug.cpu#6.cpu_load[4]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
7.76 ± 0% +15.3% 8.95 ± 0% lkp-wsx01/will-it-scale/performance-futex3
6.55 ± 3% +22.3% 8.01 ± 1% nhm4/will-it-scale/performance-futex3
7.13 +18.8% 8.47 GEO-MEAN perf-profile.cpu-cycles.get_futex_key.futex_wake.do_futex.sys_futex.system_call_fastpath
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
98 ± 7% -20.5% 78 ± 8% nhm4/will-it-scale/performance-futex3
98 -20.5% 78 GEO-MEAN sched_debug.cpu#6.cpu_load[3]
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1.22 ± 4% -15.5% 1.03 ± 9% nhm4/will-it-scale/performance-futex3
1.22 -15.5% 1.03 GEO-MEAN perf-profile.cpu-cycles.drop_futex_key_refs.isra.12.do_futex.sys_futex.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3.76 ± 0% -13.5% 3.25 ± 0% lkp-wsx01/will-it-scale/performance-futex3
3.23 ± 2% -15.0% 2.75 ± 2% nhm4/will-it-scale/performance-futex3
3.49 -14.3% 2.99 GEO-MEAN perf-profile.cpu-cycles.sysret_check.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3053 ± 8% -18.2% 2499 ± 13% nhm4/will-it-scale/performance-futex3
3053 -18.2% 2499 GEO-MEAN sched_debug.cpu#6.curr->pid
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
11.31 ± 0% -11.2% 10.05 ± 0% lkp-wsx01/will-it-scale/performance-futex3
11.27 ± 1% -16.4% 9.43 ± 1% nhm4/will-it-scale/performance-futex3
11.29 -13.8% 9.73 GEO-MEAN perf-profile.cpu-cycles.system_call.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
18.21 ± 1% -13.6% 15.74 ± 2% nhm4/will-it-scale/performance-futex3
18.21 -13.6% 15.74 GEO-MEAN perf-profile.cpu-cycles.hash_futex.do_futex.sys_futex.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
12.56 ± 0% -12.2% 11.03 ± 1% lkp-wsx01/will-it-scale/performance-futex3
12.54 ± 1% -14.4% 10.73 ± 3% nhm4/will-it-scale/performance-futex3
12.55 -13.3% 10.88 GEO-MEAN perf-profile.cpu-cycles.system_call_after_swapgs.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
21140 ± 9% +17.5% 24849 ± 8% nhm4/will-it-scale/performance-futex3
21140 +17.5% 24849 GEO-MEAN sched_debug.cfs_rq[2]:/.avg->runnable_avg_sum
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
4.52 ± 2% -11.5% 4.00 ± 1% lkp-wsx01/will-it-scale/performance-futex3
42.44 ± 0% +13.8% 48.30 ± 2% nhm4/will-it-scale/performance-futex3
13.85 +0.4% 13.90 GEO-MEAN perf-profile.cpu-cycles.do_futex.sys_futex.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1.21 ± 1% -11.4% 1.08 ± 1% lkp-wsx01/will-it-scale/performance-futex3
1.21 -11.4% 1.08 GEO-MEAN perf-profile.cpu-cycles.drop_futex_key_refs.isra.12.futex_wake.do_futex.sys_futex.system_call_fastpath
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
50.65 ± 0% +11.9% 56.69 ± 2% nhm4/will-it-scale/performance-futex3
50.65 +11.9% 56.69 GEO-MEAN perf-profile.cpu-cycles.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
20.50 ± 0% -10.9% 18.25 ± 0% lkp-wsx01/will-it-scale/performance-futex3
20.50 -10.9% 18.25 GEO-MEAN perf-profile.cpu-cycles.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
27368 ± 7% -13.6% 23638 ± 8% nhm4/will-it-scale/performance-futex3
27368 -13.6% 23638 GEO-MEAN sched_debug.cfs_rq[6]:/.avg->runnable_avg_sum
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
4.92 ± 0% -11.5% 4.36 ± 1% lkp-wsx01/will-it-scale/performance-futex3
48.57 ± 0% +11.3% 54.04 ± 2% nhm4/will-it-scale/performance-futex3
15.46 -0.7% 15.34 GEO-MEAN perf-profile.cpu-cycles.sys_futex.system_call_fastpath.syscall
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
596 ± 7% -13.6% 515 ± 8% nhm4/will-it-scale/performance-futex3
596 -13.6% 515 GEO-MEAN sched_debug.cfs_rq[6]:/.tg_runnable_contrib
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3007 ± 6% -11.8% 2654 ± 13% lkp-wsx01/will-it-scale/performance-futex3
3007 -11.8% 2653 GEO-MEAN sched_debug.cpu#38.curr->pid
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
39113 ± 2% +10.7% 43292 ± 4% nhm4/will-it-scale/performance-futex3
39113 +10.7% 43292 GEO-MEAN cpuidle.C6-NHM.usage
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
1401 ± 0% -10.1% 1260 ± 0% lkp-wsx01/will-it-scale/performance-futex3
199 ± 0% -21.5% 156 ± 2% nhm4/will-it-scale/performance-futex3
528 -16.0% 443 GEO-MEAN time.user_time
0429fbc0bdc297d6 76835b0ebf8a7fe85beb03c751
---------------- --------------------------
3901 ± 0% +3.6% 4041 ± 0% lkp-wsx01/will-it-scale/performance-futex3
522 ± 0% +8.2% 565 ± 0% nhm4/will-it-scale/performance-futex3
1428 +5.9% 1511 GEO-MEAN time.system_time
lkp-wsx01: Westmere-EX
Memory: 128G
nhm4: Nehalem
Memory: 4G
will-it-scale.scalability
0.73 ++----------------------------------------O--------------------------+
O O O O O O O O O O O O O
0.72 ++ |
0.71 ++ |
| |
0.7 ++ |
| |
0.69 ++ |
| |
0.68 ++ |
0.67 ++ |
| |
0.66 *+...*.....*....*.... ..*.... ..*.....*....* |
| *.....*.. *.. |
0.65 ++-------------------------------------------------------------------+
will-it-scale.per_process_ops
1.14e+07 ++---------------------------------------------------------------+
*....*....*....*.... ..*....*....*....*....*....* |
1.12e+07 ++ *.. |
| |
1.1e+07 ++ |
1.08e+07 ++ |
| |
1.06e+07 ++ |
| |
1.04e+07 ++ |
1.02e+07 ++ |
| |
1e+07 ++ |
O O O O O O O O O O O O O O
9.8e+06 ++---------------------------------------------------------------+
will-it-scale.per_thread_ops
1.14e+07 ++---------------------------------------------------------------+
*....*....*....*....*....*....*....*....*....*....* |
1.12e+07 ++ |
| |
1.1e+07 ++ |
1.08e+07 ++ |
| |
1.06e+07 ++ |
| |
1.04e+07 ++ |
1.02e+07 ++ |
| |
1e+07 O+ O O O O O O O O O O
| O O O |
9.8e+06 ++---------------------------------------------------------------+
28 ++---------------------------------------------------------------------+
| O |
26 O+ O O O O O O O O O O
| O O |
24 ++ |
| |
22 ++ |
| |
20 ++ |
| |
18 ++ |
| ...*....*..... ..*.....*.... ...*....*..... |
16 *+...*.. *.. *.. * |
| |
14 ++---------------------------------------------------------------------+
11 ++---------------------------------------------------------------------+
10 O+ O O O O O O O O O O O
| O O |
9 ++ |
8 ++ |
| |
7 ++ |
6 ++ |
5 ++ |
| |
4 ++ |
3 ++ |
| |
2 *+...*.....*....*.....*....*.....*....*.....*....*.....* |
1 ++---------------------------------------------------------------------+
9 ++--------------------------------------------------------------------+
| |
8.5 ++ O |
| O |
O O O O O O
8 ++ O O O O O O |
| |
7.5 ++ |
| |
7 ++ |
| *.... |
| .. *..... ..*....*.... .*....*..... |
6.5 ++ . *.. . .. * |
| .. *. |
6 *+---*----------------------------------------------------------------+
[*] 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,
Fengguang
View attachment "job.yaml" of type "text/plain" (1704 bytes)
View attachment "reproduce" of type "text/plain" (615 bytes)
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