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Date: Wed, 25 Jun 2014 19:16:48 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: Fengguang Wu <fengguang.wu@...el.com>
Cc: Dave Hansen <dave.hansen@...el.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Jet Chen <jet.chen@...el.com>
Subject: Re: [rcu] 0acd7c39a85: +11.0% will-it-scale.scalability
On Thu, Jun 26, 2014 at 09:56:16AM +0800, Fengguang Wu wrote:
> Hi Paul,
>
> FYI, we are pleased to notice big performance gains in some
> will-it-scale test cases:
Unfortunately, this one is also obsoleted by commit 4a81e8328d37 (Reduce
overhead of cond_resched() checks for RCU). Hopefully that commit also
shows similar performance gains. ;-)
Thanx, Paul
> git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu_cond_resched.2014.06.20c
> commit 0acd7c39a85836d90451b6c278c5cfdd21c055f3 ("rcu: Add RCU_COND_RESCHED_QS for large systems")
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 0.30 ~ 2% +14.3% 0.34 ~ 3% lkp-sbx04/will-it-scale/open1
> 0.34 ~ 3% +8.1% 0.37 ~ 1% nhm4/will-it-scale/read1
> 0.64 ~ 3% +11.0% 0.71 ~ 2% TOTAL will-it-scale.scalability
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 592828 ~ 1% +3.8% 615531 ~ 1% lkp-sbx04/will-it-scale/open1
> 592828 ~ 1% +3.8% 615531 ~ 1% TOTAL will-it-scale.per_process_ops
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1689 ~ 0% +498.1% 10107 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 1689 ~ 0% +498.1% 10107 ~ 2% TOTAL slabinfo.dentry.active_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 72052 ~ 0% +489.8% 424930 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 72052 ~ 0% +489.8% 424930 ~ 2% TOTAL slabinfo.Acpi-State.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 71629 ~ 0% +492.6% 424494 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 71629 ~ 0% +492.6% 424494 ~ 2% TOTAL slabinfo.Acpi-State.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1689 ~ 0% +498.1% 10107 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 1689 ~ 0% +498.1% 10107 ~ 2% TOTAL slabinfo.dentry.num_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1412 ~ 0% +490.0% 8331 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 1412 ~ 0% +490.0% 8331 ~ 2% TOTAL slabinfo.Acpi-State.active_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 70980 ~ 0% +498.1% 424517 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 70980 ~ 0% +498.1% 424517 ~ 2% TOTAL slabinfo.dentry.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 70444 ~ 0% +502.0% 424054 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 70444 ~ 0% +502.0% 424054 ~ 2% TOTAL slabinfo.dentry.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 472 ~ 0% +1557.0% 7827 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 472 ~ 0% +1557.0% 7827 ~ 2% TOTAL slabinfo.shmem_inode_cache.num_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 472 ~ 0% +1557.0% 7827 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 472 ~ 0% +1557.0% 7827 ~ 2% TOTAL slabinfo.shmem_inode_cache.active_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 22697 ~ 0% +1555.5% 375756 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 22697 ~ 0% +1555.5% 375756 ~ 2% TOTAL slabinfo.shmem_inode_cache.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 22297 ~ 0% +1584.0% 375494 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 22297 ~ 0% +1584.0% 375494 ~ 2% TOTAL slabinfo.shmem_inode_cache.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1412 ~ 0% +490.0% 8331 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 1412 ~ 0% +490.0% 8331 ~ 2% TOTAL slabinfo.Acpi-State.num_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 230182 ~ 2% +214.7% 724407 ~ 1% lkp-sbx04/will-it-scale/open1
> 29926 ~ 1% +1179.6% 382938 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 260108 ~ 2% +325.7% 1107345 ~ 1% TOTAL slabinfo.kmalloc-256.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3605 ~ 2% +214.1% 11325 ~ 1% lkp-sbx04/will-it-scale/open1
> 478 ~ 1% +1153.4% 5991 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 4083 ~ 2% +324.1% 17316 ~ 1% TOTAL slabinfo.kmalloc-256.num_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3605 ~ 2% +214.1% 11325 ~ 1% lkp-sbx04/will-it-scale/open1
> 478 ~ 1% +1153.4% 5991 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 4083 ~ 2% +324.1% 17316 ~ 1% TOTAL slabinfo.kmalloc-256.active_slabs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 230776 ~ 2% +214.1% 724862 ~ 1% lkp-sbx04/will-it-scale/open1
> 30619 ~ 1% +1152.4% 383473 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 261395 ~ 2% +324.0% 1108335 ~ 1% TOTAL slabinfo.kmalloc-256.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 38033 ~ 2% +85.2% 70426 ~ 3% lkp-sbx04/will-it-scale/open1
> 27083 ~ 8% +375.9% 128878 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 65116 ~ 4% +206.1% 199305 ~ 2% TOTAL numa-meminfo.node1.SUnreclaim
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 9470 ~ 1% +87.6% 17770 ~ 4% lkp-sbx04/will-it-scale/open1
> 6769 ~ 8% +375.7% 32201 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 16240 ~ 4% +207.7% 49971 ~ 2% TOTAL numa-vmstat.node1.nr_slab_unreclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 302149 ~ 1% -73.4% 80465 ~ 0% lkp-nex05/will-it-scale/lock1
> 853141 ~ 2% -66.6% 284788 ~ 3% lkp-sbx04/will-it-scale/open1
> 693207 ~ 0% -82.6% 120744 ~ 9% lkp-sbx04/will-it-scale/unlink2
> 434870 ~ 2% -63.8% 157362 ~ 1% lkp-wsx01/will-it-scale/futex2
> 55884 ~ 5% -55.3% 24956 ~ 4% nhm4/will-it-scale/read1
> 2339252 ~ 1% -71.4% 668317 ~ 3% TOTAL softirqs.RCU
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 51492 ~ 3% +75.4% 90311 ~ 2% lkp-sbx04/will-it-scale/open1
> 39615 ~ 2% +332.8% 171468 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 91107 ~ 3% +187.3% 261779 ~ 1% TOTAL numa-meminfo.node0.SUnreclaim
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 18566237 ~32% +133.3% 43314913 ~21% lkp-sbx04/will-it-scale/open1
> 22235565 ~30% +176.7% 61536286 ~21% lkp-sbx04/will-it-scale/unlink2
> 40801803 ~31% +157.0% 104851199 ~21% TOTAL cpuidle.C1-SNB.time
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 12835 ~ 4% +76.6% 22664 ~ 3% lkp-sbx04/will-it-scale/open1
> 9928 ~ 2% +331.3% 42820 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 22764 ~ 3% +187.7% 65484 ~ 1% TOTAL numa-vmstat.node0.nr_slab_unreclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 149956 ~ 1% +81.6% 272270 ~ 1% lkp-sbx04/will-it-scale/open1
> 112319 ~ 0% +312.8% 463620 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 262275 ~ 1% +180.6% 735890 ~ 1% TOTAL meminfo.SUnreclaim
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 49308 ~ 4% +66.6% 82136 ~ 3% lkp-sbx04/will-it-scale/open1
> 38437 ~ 5% +314.4% 159290 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 87745 ~ 4% +175.1% 241426 ~ 2% TOTAL numa-meminfo.node1.Slab
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 37339 ~ 1% +81.4% 67717 ~ 1% lkp-sbx04/will-it-scale/open1
> 28028 ~ 0% +313.1% 115797 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 65368 ~ 1% +180.7% 183514 ~ 1% TOTAL proc-vmstat.nr_slab_unreclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 31729 ~ 8% +79.4% 56907 ~ 2% lkp-sbx04/will-it-scale/open1
> 22831 ~ 6% +295.0% 90181 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 54560 ~ 7% +169.6% 147088 ~ 2% TOTAL numa-meminfo.node2.SUnreclaim
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 8014 ~ 9% +77.4% 14215 ~ 3% lkp-sbx04/will-it-scale/open1
> 5703 ~ 6% +294.5% 22500 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 13717 ~ 8% +167.6% 36715 ~ 2% TOTAL numa-vmstat.node2.nr_slab_unreclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 14049 ~ 9% +162.8% 36926 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 14049 ~ 9% +162.8% 36926 ~ 2% TOTAL numa-meminfo.node0.SReclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3505 ~ 9% +163.0% 9218 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 3505 ~ 9% +163.0% 9218 ~ 1% TOTAL numa-vmstat.node0.nr_slab_reclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 2840 ~ 6% +167.5% 7598 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 2840 ~ 6% +167.5% 7598 ~ 4% TOTAL numa-vmstat.node1.nr_slab_reclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 11353 ~ 6% +167.9% 30411 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 11353 ~ 6% +167.9% 30411 ~ 4% TOTAL numa-meminfo.node1.SReclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 62873 ~ 2% +60.7% 101060 ~ 2% lkp-sbx04/will-it-scale/open1
> 53665 ~ 2% +288.3% 208395 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 116538 ~ 2% +165.5% 309456 ~ 1% TOTAL numa-meminfo.node0.Slab
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 195370 ~ 0% +62.8% 318033 ~ 1% lkp-sbx04/will-it-scale/open1
> 161158 ~ 0% +258.0% 576939 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 356528 ~ 0% +151.0% 894972 ~ 1% TOTAL meminfo.Slab
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 28175 ~ 2% +78.7% 50339 ~ 4% lkp-sbx04/will-it-scale/open1
> 22550 ~10% +211.4% 70229 ~ 5% lkp-sbx04/will-it-scale/unlink2
> 50725 ~ 6% +137.7% 120568 ~ 5% TOTAL numa-meminfo.node3.SUnreclaim
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 7070 ~ 3% +77.8% 12570 ~ 4% lkp-sbx04/will-it-scale/open1
> 5633 ~10% +211.2% 17532 ~ 5% lkp-sbx04/will-it-scale/unlink2
> 12704 ~ 6% +137.0% 30102 ~ 5% TOTAL numa-vmstat.node3.nr_slab_unreclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 48838 ~ 1% +132.0% 113319 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 48838 ~ 1% +132.0% 113319 ~ 1% TOTAL meminfo.SReclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 12200 ~ 1% +132.1% 28313 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 12200 ~ 1% +132.1% 28313 ~ 1% TOTAL proc-vmstat.nr_slab_reclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 39455 ~ 5% +58.3% 62461 ~ 3% lkp-sbx04/will-it-scale/open1
> 33103 ~10% +172.9% 90331 ~ 3% lkp-sbx04/will-it-scale/unlink2
> 72559 ~ 7% +110.6% 152793 ~ 3% TOTAL numa-meminfo.node3.Slab
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 43199 ~ 8% +57.6% 68080 ~ 4% lkp-sbx04/will-it-scale/open1
> 35542 ~ 7% +224.5% 115339 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 31726 ~ 7% +15.3% 36592 ~12% lkp-wsx01/will-it-scale/futex2
> 110469 ~ 7% +99.2% 220012 ~ 4% TOTAL numa-meminfo.node2.Slab
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 12710 ~12% +97.9% 25157 ~ 5% lkp-sbx04/will-it-scale/unlink2
> 12710 ~12% +97.9% 25157 ~ 5% TOTAL numa-meminfo.node2.SReclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3179 ~11% +97.5% 6279 ~ 5% lkp-sbx04/will-it-scale/unlink2
> 3179 ~11% +97.5% 6279 ~ 5% TOTAL numa-vmstat.node2.nr_slab_reclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 10553 ~ 9% +90.5% 20102 ~ 6% lkp-sbx04/will-it-scale/unlink2
> 10553 ~ 9% +90.5% 20102 ~ 6% TOTAL numa-meminfo.node3.SReclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 2644 ~10% +89.9% 5020 ~ 6% lkp-sbx04/will-it-scale/unlink2
> 2644 ~10% +89.9% 5020 ~ 6% TOTAL numa-vmstat.node3.nr_slab_reclaimable
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 6034 ~26% +16.1% 7008 ~22% lkp-sbx04/will-it-scale/open1
> 6034 ~26% +16.1% 7008 ~22% TOTAL numa-vmstat.node2.nr_active_file
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 24139 ~26% +16.1% 28033 ~22% lkp-sbx04/will-it-scale/open1
> 24139 ~26% +16.1% 28033 ~22% TOTAL numa-meminfo.node2.Active(file)
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 0.55 ~35% +94.2% 1.08 ~14% lkp-sbx04/will-it-scale/unlink2
> 0.55 ~35% +94.2% 1.08 ~14% TOTAL perf-profile.cpu-cycles.rcu_nocb_kthread.kthread.ret_from_fork
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 498234 ~ 1% -35.9% 319244 ~ 1% lkp-sbx04/will-it-scale/open1
> 425531 ~ 2% -39.8% 256020 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 923765 ~ 2% -37.7% 575264 ~ 2% TOTAL cpuidle.C7-SNB.usage
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 327 ~ 9% -26.2% 241 ~21% lkp-nex05/will-it-scale/lock1
> 327 ~ 9% -26.2% 241 ~21% TOTAL slabinfo.blkdev_ioc.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 327 ~ 9% -26.2% 241 ~21% lkp-nex05/will-it-scale/lock1
> 327 ~ 9% -26.2% 241 ~21% TOTAL slabinfo.blkdev_ioc.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 4608661 ~ 5% +15.0% 5300401 ~ 3% lkp-sbx04/will-it-scale/open1
> 631679 ~ 4% +64.1% 1036539 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 5240340 ~ 5% +20.9% 6336941 ~ 3% TOTAL numa-numastat.node2.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 4606166 ~ 5% +15.0% 5298738 ~ 3% lkp-sbx04/will-it-scale/open1
> 630014 ~ 4% +64.4% 1035707 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 5236180 ~ 5% +21.0% 6334445 ~ 3% TOTAL numa-numastat.node2.local_node
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 6319649 ~ 2% +11.6% 7054325 ~ 3% lkp-sbx04/will-it-scale/open1
> 1017618 ~ 3% +59.6% 1624227 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 7337268 ~ 3% +18.3% 8678552 ~ 2% TOTAL numa-numastat.node1.local_node
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 6323803 ~ 2% +11.6% 7058478 ~ 3% lkp-sbx04/will-it-scale/open1
> 1021772 ~ 3% +59.4% 1628381 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 7345576 ~ 3% +18.3% 8686859 ~ 2% TOTAL numa-numastat.node1.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3533020 ~ 7% +16.2% 4106277 ~ 3% lkp-sbx04/will-it-scale/open1
> 529616 ~ 6% +59.8% 846268 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 4062636 ~ 7% +21.9% 4952546 ~ 3% TOTAL numa-numastat.node3.local_node
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 3534685 ~ 7% +16.2% 4108772 ~ 3% lkp-sbx04/will-it-scale/open1
> 532111 ~ 6% +59.7% 849592 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 4066797 ~ 7% +21.9% 4958364 ~ 3% TOTAL numa-numastat.node3.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 699767 ~ 4% +30.0% 909550 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 699767 ~ 4% +30.0% 909550 ~ 2% TOTAL numa-vmstat.node1.numa_local
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 710327 ~ 4% +29.5% 920095 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 710327 ~ 4% +29.5% 920095 ~ 2% TOTAL numa-vmstat.node1.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 355465 ~ 3% +32.2% 469857 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 355465 ~ 3% +32.2% 469857 ~ 1% TOTAL numa-vmstat.node2.numa_local
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 401800 ~ 0% +30.8% 525635 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 401800 ~ 0% +30.8% 525635 ~ 1% TOTAL numa-meminfo.node1.MemUsed
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 330376 ~ 1% +11.7% 369194 ~ 1% lkp-sbx04/will-it-scale/open1
> 327252 ~ 0% +47.0% 480920 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 657628 ~ 0% +29.3% 850114 ~ 1% TOTAL numa-meminfo.node0.MemUsed
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 395008 ~ 2% +28.8% 508797 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 395008 ~ 2% +28.8% 508797 ~ 1% TOTAL numa-vmstat.node2.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 84008013 ~ 4% +12.5% 94488610 ~ 1% lkp-sbx04/will-it-scale/open1
> 20904484 ~ 1% +35.9% 28407692 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 104912497 ~ 3% +17.1% 122896302 ~ 1% TOTAL proc-vmstat.pgalloc_normal
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 20 ~19% +69.3% 34 ~32% lkp-sbx04/will-it-scale/unlink2
> 20 ~19% +69.3% 34 ~32% TOTAL cpuidle.C6-SNB.usage
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 90818481 ~ 4% +12.2% 1.019e+08 ~ 1% lkp-sbx04/will-it-scale/open1
> 24507722 ~ 1% +32.8% 32552022 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 1.153e+08 ~ 3% +16.6% 1.344e+08 ~ 1% TOTAL proc-vmstat.pgfree
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 23331601 ~ 4% +11.8% 26096052 ~ 1% lkp-sbx04/will-it-scale/open1
> 7360836 ~ 1% +29.1% 9500981 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 30692438 ~ 3% +16.0% 35597034 ~ 1% TOTAL proc-vmstat.numa_local
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 23344069 ~ 4% +11.8% 26108517 ~ 1% lkp-sbx04/will-it-scale/open1
> 7373303 ~ 1% +29.0% 9513445 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 30717373 ~ 3% +16.0% 35621962 ~ 1% TOTAL proc-vmstat.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 293077 ~ 3% +9.2% 320181 ~ 3% lkp-sbx04/will-it-scale/open1
> 289901 ~ 3% +29.0% 374077 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 582978 ~ 3% +19.1% 694258 ~ 2% TOTAL numa-meminfo.node2.MemUsed
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1.34 ~10% -18.2% 1.10 ~ 6% lkp-sbx04/will-it-scale/open1
> 1.34 ~10% -18.2% 1.10 ~ 6% TOTAL perf-profile.cpu-cycles.task_work_add.filp_close.__close_fd.sys_close.system_call_fastpath
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 310408 ~ 3% +17.2% 363768 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 310408 ~ 3% +17.2% 363768 ~ 4% TOTAL numa-vmstat.node3.numa_local
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 278872 ~ 3% +18.9% 331653 ~ 2% lkp-sbx04/will-it-scale/unlink2
> 278872 ~ 3% +18.9% 331653 ~ 2% TOTAL numa-meminfo.node3.MemUsed
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1.83 ~ 3% +17.5% 2.15 ~ 3% nhm4/will-it-scale/read1
> 1.83 ~ 3% +17.5% 2.15 ~ 3% TOTAL perf-profile.cpu-cycles.find_lock_entry.shmem_getpage_gfp.shmem_file_read_iter.new_sync_read.vfs_read
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 350441 ~ 3% +15.4% 404433 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 350441 ~ 3% +15.4% 404433 ~ 4% TOTAL numa-vmstat.node3.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 11130 ~ 1% +18.7% 13216 ~ 2% lkp-nex05/will-it-scale/lock1
> 13337 ~ 2% +15.2% 15360 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 12236 ~ 1% +16.4% 14247 ~ 1% lkp-wsx01/will-it-scale/futex2
> 36704 ~ 2% +16.7% 42823 ~ 3% TOTAL slabinfo.kmalloc-192.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 11130 ~ 1% +18.6% 13206 ~ 2% lkp-nex05/will-it-scale/lock1
> 13337 ~ 2% +14.8% 15306 ~ 4% lkp-sbx04/will-it-scale/unlink2
> 12236 ~ 1% +16.4% 14247 ~ 1% lkp-wsx01/will-it-scale/futex2
> 36704 ~ 2% +16.5% 42760 ~ 3% TOTAL slabinfo.kmalloc-192.active_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 6819069 ~ 3% +8.6% 7407793 ~ 2% lkp-sbx04/will-it-scale/open1
> 3615190 ~ 1% +15.2% 4164246 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 10434260 ~ 2% +10.9% 11572039 ~ 1% TOTAL proc-vmstat.pgalloc_dma32
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 8856248 ~ 3% +8.6% 9619086 ~ 2% lkp-sbx04/will-it-scale/open1
> 5216071 ~ 2% +14.6% 5979211 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 14072319 ~ 2% +10.8% 15598298 ~ 1% TOTAL numa-numastat.node0.local_node
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 8860401 ~ 3% +8.6% 9623240 ~ 2% lkp-sbx04/will-it-scale/open1
> 5220224 ~ 2% +14.6% 5983365 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 14080626 ~ 2% +10.8% 15606605 ~ 1% TOTAL numa-numastat.node0.numa_hit
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 4865 ~ 2% +13.5% 5524 ~ 6% lkp-sbx04/will-it-scale/open1
> 4865 ~ 2% +13.5% 5524 ~ 6% TOTAL cpuidle.C1-SNB.usage
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 2231 ~ 5% +9.1% 2434 ~ 7% lkp-sbx04/will-it-scale/unlink2
> 2231 ~ 5% +9.1% 2434 ~ 7% TOTAL numa-meminfo.node3.KernelStack
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 2438 ~ 2% +10.7% 2700 ~ 1% lkp-nex05/will-it-scale/lock1
> 2438 ~ 2% +10.7% 2700 ~ 1% TOTAL slabinfo.signal_cache.num_objs
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 17183 ~ 1% +131.6% 39791 ~ 0% lkp-nex05/will-it-scale/lock1
> 67122 ~ 3% -18.0% 55048 ~ 0% lkp-sbx04/will-it-scale/open1
> 67648 ~ 6% -18.5% 55135 ~ 0% lkp-sbx04/will-it-scale/unlink2
> 21242 ~ 0% +99.3% 42326 ~ 0% lkp-wsx01/will-it-scale/futex2
> 6224 ~ 3% +52.1% 9468 ~ 2% nhm4/will-it-scale/read1
> 179420 ~ 4% +12.5% 201771 ~ 0% TOTAL time.involuntary_context_switches
>
> acf426994c75e38 0acd7c39a85836d90451b6c27
> --------------- -------------------------
> 1054 ~ 1% +19.4% 1258 ~ 1% lkp-nex05/will-it-scale/lock1
> 4445 ~ 1% -40.5% 2645 ~ 0% lkp-sbx04/will-it-scale/open1
> 3861 ~ 0% -55.5% 1717 ~ 1% lkp-sbx04/will-it-scale/unlink2
> 1142 ~ 1% +15.4% 1318 ~ 1% lkp-wsx01/will-it-scale/futex2
> 527 ~ 1% +18.1% 622 ~ 1% nhm4/will-it-scale/read1
> 11030 ~ 1% -31.4% 7562 ~ 1% TOTAL vmstat.system.cs
>
>
> Legend:
> ~XX% - stddev percent
> [+-]XX% - change percent
>
>
> time.involuntary_context_switches
>
> 75000 *+--*----------------*----------------------------------------------+
> | : + |
> | *...*.. : + * |
> 70000 ++ *... : + + + |
> | * *...*.. + + .* |
> | *...* + .. |
> 65000 ++ * |
> | |
> 60000 ++ |
> | |
> | |
> 55000 O+ O O O O O O O O O O O O O O O O O O
> | O |
> | |
> 50000 ++------------------------------------------------------------------+
>
>
> vmstat.system.cs
>
> 6000 ++-------------------------------------------------------------------+
> | |
> 5500 *+..*..*...*...*..*...*..*... |
> | *. |
> 5000 ++ .. |
> | |
> 4500 ++ *..*...*...*.. |
> | * |
> 4000 ++ |
> | |
> 3500 ++ |
> | |
> 3000 ++ |
> | O O O O O O O O O O O O
> 2500 O+-----O---O------O---O---------------------O------O------O----------+
>
>
> [*] 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,
> Fengguang
>
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