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Message-ID: <20140821140134.GB19246@localhost>
Date: Thu, 21 Aug 2014 22:01:34 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Rik van Riel <riel@...hat.com>
Cc: Dave Hansen <dave.hansen@...el.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Ingo Molnar <mingo@...e.hu>
Subject: [sched/fair] caeb178c60f: +252.0% cpuidle.C1-SNB.time, +3.1%
turbostat.Pkg_W
Hi Rik,
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
commit caeb178c60f4f93f1b45c0bc056b5cf6d217b67f ("sched/fair: Make update_sd_pick_busiest() return 'true' on a busier sd")
testbox/testcase/testparams: lkp-sb03/nepim/300s-100%-tcp6
743cb1ff191f00f caeb178c60f4f93f1b45c0bc0
--------------- -------------------------
29718911 ±45% +329.5% 1.277e+08 ±10% cpuidle.C1E-SNB.time
861 ±34% +1590.4% 14564 ±31% cpuidle.C3-SNB.usage
1.65e+08 ±20% +175.4% 4.544e+08 ±15% cpuidle.C1-SNB.time
24 ±41% +247.6% 86 ±23% numa-numastat.node1.other_node
27717 ±11% +98.7% 55085 ± 6% softirqs.RCU
180767 ±11% +86.7% 337416 ±10% cpuidle.C7-SNB.usage
104591 ±14% +77.4% 185581 ±10% cpuidle.C1E-SNB.usage
384 ±10% +33.3% 512 ±11% slabinfo.kmem_cache.num_objs
384 ±10% +33.3% 512 ±11% slabinfo.kmem_cache.active_objs
494 ± 8% +25.9% 622 ± 9% slabinfo.kmem_cache_node.active_objs
512 ± 7% +25.0% 640 ± 8% slabinfo.kmem_cache_node.num_objs
83427 ± 6% +10.3% 92028 ± 5% meminfo.DirectMap4k
9508 ± 1% +21.3% 11534 ± 7% slabinfo.kmalloc-512.active_objs
9838 ± 1% +20.5% 11852 ± 6% slabinfo.kmalloc-512.num_objs
53997 ± 6% +11.1% 59981 ± 4% numa-meminfo.node1.Slab
2662 ± 3% -9.0% 2424 ± 3% slabinfo.kmalloc-96.active_objs
2710 ± 3% -8.6% 2478 ± 3% slabinfo.kmalloc-96.num_objs
921 ±41% +3577.7% 33901 ±14% time.involuntary_context_switches
2371 ± 2% +15.5% 2739 ± 2% vmstat.system.in
testbox/testcase/testparams: lkp-sb03/nepim/300s-100%-tcp
743cb1ff191f00f caeb178c60f4f93f1b45c0bc0
--------------- -------------------------
20657207 ±31% +358.2% 94650352 ±18% cpuidle.C1E-SNB.time
29718911 ±45% +329.5% 1.277e+08 ±10% cpuidle.C1E-SNB.time
861 ±34% +1590.4% 14564 ±31% cpuidle.C3-SNB.usage
0.05 ±46% +812.5% 0.44 ±34% turbostat.%c3
1.12e+08 ±25% +364.8% 5.207e+08 ±15% cpuidle.C1-SNB.time
1.65e+08 ±20% +175.4% 4.544e+08 ±15% cpuidle.C1-SNB.time
35 ±19% +105.6% 72 ±28% numa-numastat.node1.other_node
24 ±41% +247.6% 86 ±23% numa-numastat.node1.other_node
43 ±22% +86.2% 80 ±26% numa-vmstat.node0.nr_dirtied
24576 ± 6% +113.9% 52574 ± 1% softirqs.RCU
27717 ±11% +98.7% 55085 ± 6% softirqs.RCU
211533 ± 6% +58.4% 334990 ± 8% cpuidle.C7-SNB.usage
180767 ±11% +86.7% 337416 ±10% cpuidle.C7-SNB.usage
77739 ±13% +52.9% 118876 ±18% cpuidle.C1E-SNB.usage
104591 ±14% +77.4% 185581 ±10% cpuidle.C1E-SNB.usage
32.09 ±14% -24.8% 24.12 ±18% turbostat.%pc2
9.04 ± 6% +41.6% 12.80 ± 6% turbostat.%c1
384 ±10% +33.3% 512 ±11% slabinfo.kmem_cache.num_objs
384 ±10% +33.3% 512 ±11% slabinfo.kmem_cache.active_objs
494 ± 8% +25.9% 622 ± 9% slabinfo.kmem_cache_node.active_objs
512 ± 7% +25.0% 640 ± 8% slabinfo.kmem_cache_node.num_objs
379 ± 9% +16.7% 443 ± 7% numa-vmstat.node0.nr_page_table_pages
83427 ± 6% +10.3% 92028 ± 5% meminfo.DirectMap4k
1579 ± 6% -15.3% 1338 ± 7% numa-meminfo.node1.PageTables
394 ± 6% -15.1% 334 ± 7% numa-vmstat.node1.nr_page_table_pages
1509 ± 7% +16.6% 1760 ± 7% numa-meminfo.node0.PageTables
12681 ± 1% -17.3% 10482 ±14% numa-meminfo.node1.AnonPages
3169 ± 1% -17.3% 2620 ±14% numa-vmstat.node1.nr_anon_pages
10171 ± 3% +10.9% 11283 ± 3% slabinfo.kmalloc-512.active_objs
9508 ± 1% +21.3% 11534 ± 7% slabinfo.kmalloc-512.active_objs
10481 ± 3% +10.9% 11620 ± 3% slabinfo.kmalloc-512.num_objs
9838 ± 1% +20.5% 11852 ± 6% slabinfo.kmalloc-512.num_objs
53997 ± 6% +11.1% 59981 ± 4% numa-meminfo.node1.Slab
5072 ± 1% +11.6% 5662 ± 3% slabinfo.kmalloc-2048.num_objs
4974 ± 1% +11.6% 5551 ± 3% slabinfo.kmalloc-2048.active_objs
12824 ± 2% -16.1% 10754 ±14% numa-meminfo.node1.Active(anon)
3205 ± 2% -16.2% 2687 ±14% numa-vmstat.node1.nr_active_anon
2662 ± 3% -9.0% 2424 ± 3% slabinfo.kmalloc-96.active_objs
2710 ± 3% -8.6% 2478 ± 3% slabinfo.kmalloc-96.num_objs
15791 ± 1% +15.2% 18192 ± 9% numa-meminfo.node0.AnonPages
3949 ± 1% +15.2% 4549 ± 9% numa-vmstat.node0.nr_anon_pages
13669 ± 1% -7.5% 12645 ± 2% slabinfo.kmalloc-16.num_objs
662 ±23% +4718.6% 31918 ±12% time.involuntary_context_switches
921 ±41% +3577.7% 33901 ±14% time.involuntary_context_switches
2463 ± 1% +13.1% 2786 ± 3% vmstat.system.in
2371 ± 2% +15.5% 2739 ± 2% vmstat.system.in
49.40 ± 2% +4.8% 51.79 ± 2% turbostat.Cor_W
77.48 ± 1% +3.1% 79.91 ± 1% turbostat.Pkg_W
testbox/testcase/testparams: lkp-st02/dd-write/5m-11HDD-RAID5-cfq-xfs-1dd
743cb1ff191f00f caeb178c60f4f93f1b45c0bc0
--------------- -------------------------
18571 ± 7% +31.4% 24396 ± 4% proc-vmstat.pgscan_direct_normal
39983 ± 2% +38.3% 55286 ± 0% perf-stat.cpu-migrations
4193962 ± 2% +20.9% 5072009 ± 3% perf-stat.iTLB-load-misses
4.568e+09 ± 2% -17.2% 3.781e+09 ± 1% perf-stat.L1-icache-load-misses
1.762e+10 ± 0% -7.8% 1.625e+10 ± 1% perf-stat.cache-references
1.408e+09 ± 1% -6.6% 1.315e+09 ± 1% perf-stat.branch-load-misses
1.407e+09 ± 1% -6.5% 1.316e+09 ± 1% perf-stat.branch-misses
6.839e+09 ± 1% +5.0% 7.185e+09 ± 2% perf-stat.LLC-loads
1.558e+10 ± 0% +3.5% 1.612e+10 ± 1% perf-stat.L1-dcache-load-misses
1.318e+12 ± 0% +3.4% 1.363e+12 ± 0% perf-stat.L1-icache-loads
2.979e+10 ± 1% +2.4% 3.051e+10 ± 0% perf-stat.L1-dcache-store-misses
1.893e+11 ± 0% +2.5% 1.94e+11 ± 0% perf-stat.branch-instructions
2.298e+11 ± 0% +2.7% 2.361e+11 ± 0% perf-stat.L1-dcache-stores
1.016e+12 ± 0% +2.6% 1.042e+12 ± 0% perf-stat.instructions
1.892e+11 ± 0% +2.5% 1.94e+11 ± 0% perf-stat.branch-loads
3.71e+11 ± 0% +2.4% 3.799e+11 ± 0% perf-stat.dTLB-loads
3.711e+11 ± 0% +2.3% 3.798e+11 ± 0% perf-stat.L1-dcache-loads
325768 ± 0% +2.7% 334461 ± 0% vmstat.io.bo
8083 ± 0% +2.4% 8278 ± 0% iostat.sdf.wrqm/s
8083 ± 0% +2.4% 8278 ± 0% iostat.sdk.wrqm/s
8082 ± 0% +2.4% 8276 ± 0% iostat.sdg.wrqm/s
32615 ± 0% +2.4% 33398 ± 0% iostat.sdf.wkB/s
32617 ± 0% +2.4% 33401 ± 0% iostat.sdk.wkB/s
32612 ± 0% +2.4% 33393 ± 0% iostat.sdg.wkB/s
8083 ± 0% +2.4% 8277 ± 0% iostat.sdl.wrqm/s
8083 ± 0% +2.4% 8276 ± 0% iostat.sdi.wrqm/s
8082 ± 0% +2.4% 8277 ± 0% iostat.sdc.wrqm/s
32614 ± 0% +2.4% 33396 ± 0% iostat.sdl.wkB/s
8083 ± 0% +2.4% 8278 ± 0% iostat.sde.wrqm/s
8082 ± 0% +2.4% 8277 ± 0% iostat.sdh.wrqm/s
8083 ± 0% +2.4% 8277 ± 0% iostat.sdd.wrqm/s
32614 ± 0% +2.4% 33393 ± 0% iostat.sdi.wkB/s
32611 ± 0% +2.4% 33395 ± 0% iostat.sdc.wkB/s
325759 ± 0% +2.4% 333577 ± 0% iostat.md0.wkB/s
1274 ± 0% +2.4% 1305 ± 0% iostat.md0.w/s
8082 ± 0% +2.4% 8277 ± 0% iostat.sdb.wrqm/s
32618 ± 0% +2.4% 33398 ± 0% iostat.sde.wkB/s
32612 ± 0% +2.4% 33395 ± 0% iostat.sdh.wkB/s
32618 ± 0% +2.4% 33397 ± 0% iostat.sdd.wkB/s
8084 ± 0% +2.4% 8278 ± 0% iostat.sdj.wrqm/s
32611 ± 0% +2.4% 33396 ± 0% iostat.sdb.wkB/s
32618 ± 0% +2.4% 33400 ± 0% iostat.sdj.wkB/s
2.3e+11 ± 0% +2.5% 2.357e+11 ± 0% perf-stat.dTLB-stores
4898 ± 0% +2.1% 5003 ± 0% vmstat.system.cs
1.017e+12 ± 0% +2.4% 1.042e+12 ± 0% perf-stat.iTLB-loads
1518279 ± 0% +2.1% 1549457 ± 0% perf-stat.context-switches
1.456e+12 ± 0% +1.4% 1.476e+12 ± 0% perf-stat.cpu-cycles
1.456e+12 ± 0% +1.3% 1.475e+12 ± 0% perf-stat.ref-cycles
1.819e+11 ± 0% +1.3% 1.843e+11 ± 0% perf-stat.bus-cycles
lkp-sb03 is a Sandy Bridge-EP server.
Memory: 64G
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 32
On-line CPU(s) list: 0-31
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 2
NUMA node(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 45
Stepping: 6
CPU MHz: 3500.613
BogoMIPS: 5391.16
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 20480K
NUMA node0 CPU(s): 0-7,16-23
NUMA node1 CPU(s): 8-15,24-31
lkp-st02 is Core2
Memory: 8G
time.involuntary_context_switches
40000 O+------------------------------------------------------------------+
| O O O |
35000 ++O O O O O O |
30000 ++ O O O |
| O O O |
25000 ++ O O |
| |
20000 ++ |
| |
15000 ++ |
10000 ++ |
| |
5000 ++ |
| .*. |
0 *+*--*-*-*-*--*-*-*-*--*-*-*-*--*-*-*--*-*-*-*--*---*-*--*-*-*-*--*-*
[*] 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
View attachment "reproduce" of type "text/plain" (2404 bytes)
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