From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
To: lkp@lists.01.org
Subject: Re: [rcu] 7c66b15f870: +1.8% turbostat.Pkg_W
Date: Wed, 25 Jun 2014 19:10:23 -0700 [thread overview]
Message-ID: <20140626021023.GO4603@linux.vnet.ibm.com> (raw)
In-Reply-To: <20140626013308.GA12239@localhost>
[-- Attachment #1: Type: text/plain, Size: 7934 bytes --]
On Thu, Jun 26, 2014 at 09:33:08AM +0800, Fengguang Wu wrote:
> Hi Paul,
>
> We noticed increased power consumption in our internal merge commit.
> It's not a direct evidence, however in the hope you can see any
> obvious clues. :)
Hello, Fengguang,
This particular branch is obsolete, and has been replaced by commit
4a81e8328d37 (Reduce overhead of cond_resched() checks for RCU).
Just out of curiosity, how do you measure the power consumption?
Thanx, Paul
> git://internal_merge_and_test_tree devel-hourly-2014062315
> commit 7c66b15f8704703f6861faa246387342f7a05108 ("Merge 'rcu/rcu_cond_resched.2014.06.20c' into devel-hourly-2014062315")
>
> Merge sequence is:
>
> 7c66b15 Merge 'rcu/rcu_cond_resched.2014.06.20c' into devel-hourly-2014062315
> db47b74 Merge 'ipvs-next/master' into devel-hourly-2014062315
> ca8d737 Merge 'regulator/topic/ab8500' into devel-hourly-2014062315
> aee9255 Merge 'renesas/devel' into devel-hourly-2014062315
> af18816 Merge 'vireshk/tick/lowres-go-tickless' into devel-hourly-2014062315
> 3cf94bc1 Merge 'vireshk/tick/ONESHOT-STOPPED' into devel-hourly-2014062315
> 94ae897 Merge 'asoc/topic/tlv320aic32x4' into devel-hourly-2014062315
> 28ef1ff Merge 'tianyu/dep_support' into devel-hourly-2014062315
> f04bc00 Merge 'robclark/msm-next' into devel-hourly-2014062315
> 03f1b1e Merge 'net/master' into devel-hourly-2014062315
> a1a9b33 Merge 'spi/fix/qup' into devel-hourly-2014062315
> 45bf5db Merge 'renesas/next' into devel-hourly-2014062315
> fb20fce Merge 'asoc/for-next' into devel-hourly-2014062315
> a385be7 Merge 'asoc/topic/samsung' into devel-hourly-2014062315
> 1a9f804 0day base guard for 'devel-hourly-2014062315'
> a497c3b Linux 3.16-rc2
>
> test case: brickland3/vm-scalability/300s-anon-rx-seq-mt
>
> db47b74b78e1623 7c66b15f8704703f6861faa24
> --------------- -------------------------
> 0.73 ~ 7% -13.4% 0.64 ~ 6% TOTAL turbostat.%c1
> 1499 ~ 5% +11.6% 1672 ~ 2% TOTAL slabinfo.sock_inode_cache.num_objs
> 1499 ~ 5% +11.6% 1672 ~ 2% TOTAL slabinfo.sock_inode_cache.active_objs
> 4.36 ~ 1% -8.1% 4.01 ~ 1% TOTAL turbostat.%c6
> 11782 ~ 1% +8.0% 12726 ~ 2% TOTAL time.involuntary_context_switches
> 2848 ~ 0% +4.8% 2983 ~ 0% TOTAL time.user_time
> 24.26 ~ 0% +4.4% 25.33 ~ 0% TOTAL time.elapsed_time
> 402 ~ 0% +2.0% 410 ~ 0% TOTAL turbostat.Cor_W
> 469 ~ 0% +1.8% 477 ~ 0% TOTAL turbostat.Pkg_W
>
> c8bb7487275a9b7 7c66b15f8704703f6861faa24
> --------------- -------------------------
> 2.047e+08 ~ 0% -5.2% 1.942e+08 ~ 0% TOTAL vm-scalability.throughput
> 58629 ~11% +25.1% 73348 ~13% TOTAL numa-numastat.node3.local_node
> 58670 ~11% +25.1% 73387 ~13% TOTAL numa-numastat.node3.numa_hit
> 41 ~ 6% -12.6% 36 ~ 1% TOTAL numa-numastat.node2.other_node
> 493777 ~ 2% -12.7% 431077 ~ 3% TOTAL proc-vmstat.pgfault
> 386476 ~ 1% -10.1% 347456 ~ 2% TOTAL proc-vmstat.pgalloc_normal
> 366616 ~ 2% -9.6% 331587 ~ 2% TOTAL proc-vmstat.numa_hit
> 366489 ~ 2% -9.6% 331475 ~ 2% TOTAL proc-vmstat.numa_local
> 11970 ~ 2% +6.3% 12726 ~ 2% TOTAL time.involuntary_context_switches
> 2829 ~ 0% +5.5% 2983 ~ 0% TOTAL time.user_time
> 24.02 ~ 0% +5.5% 25.33 ~ 0% TOTAL time.elapsed_time
> 402 ~ 0% +2.0% 410 ~ 0% TOTAL turbostat.Cor_W
> 469 ~ 0% +1.7% 477 ~ 0% TOTAL turbostat.Pkg_W
>
> Legend:
> ~XX% - stddev percent
> [+-]XX% - change percent
>
>
> time.user_time
>
> 3000 ++-------------------------------------------------------------------+
> 2980 ++O O O O O O O O O O O O O |
> | O O O O O |
> 2960 O+ |
> 2940 ++ |
> | |
> 2920 ++ |
> 2900 ++ |
> 2880 ++ |
> | |
> 2860 ++ *. .*. .*. *. .*. |
> 2840 ++ + * *.* *. + *.* *. |
> *. .*.* *.*.*.*.*..*.*.*. .*.*.*.*.*.*.* *.*
> 2820 ++*.* * |
> 2800 ++-------------------------------------------------------------------+
>
>
> time.elapsed_time
>
> 29 ++-------------------------------------------------------------------+
> 28.5 O+ |
> | |
> 28 ++ |
> 27.5 ++ |
> 27 ++ |
> 26.5 ++ |
> | |
> 26 ++ |
> 25.5 ++O O O O O O O O O O O O O O O O O |
> 25 ++ O |
> 24.5 ++ |
> | .*. .*.*.*.*.*.*.*. .*.*.*.*.*. |
> 24 *+*.* * *.*.*.*.*..*.*.*.*.*.*.*.*.*.*.* *.*
> 23.5 ++-------------------------------------------------------------------+
>
>
> vm-scalability.throughput
>
> 2.06e+08 ++*-*---------------------------------*--------------------------+
> * + *.*.*.*.*.**.* *.*.*.*.*.*.* *.|
> 2.04e+08 ++ *.*. + + + *
> | **.*.*.*.*.* **.*.*.* |
> 2.02e+08 ++ |
> | |
> 2e+08 ++ |
> | |
> 1.98e+08 ++ |
> | |
> 1.96e+08 O+ |
> | O OO O |
> 1.94e+08 ++ O O O O O O O O O O O O OO |
> | |
> 1.92e+08 ++---------------------------------------------------------------+
>
>
> [*] 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
>
next prev parent reply other threads:[~2014-06-26 2:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-26 1:33 [rcu] 7c66b15f870: +1.8% turbostat.Pkg_W Fengguang Wu
2014-06-26 2:10 ` Paul E. McKenney [this message]
2014-06-26 2:18 ` Fengguang Wu
2014-06-26 4:00 ` Paul E. McKenney
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140626021023.GO4603@linux.vnet.ibm.com \
--to=paulmck@linux.vnet.ibm.com \
--cc=lkp@lists.01.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.