From: Mike Galbraith <efault@gmx.de>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: Rik van Riel <riel@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Davidlohr Bueso <davidlohr.bueso@hp.com>,
hhuang@redhat.com, Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 2/4] ipc/sem: seperate wait-for-zero and alter tasks into seperate queues
Date: Sat, 01 Jun 2013 13:04:18 +0200 [thread overview]
Message-ID: <1370084658.7268.19.camel@marge.simpson.net> (raw)
In-Reply-To: <1370080999.7268.5.camel@marge.simpson.net>
On Sat, 2013-06-01 at 12:03 +0200, Mike Galbraith wrote:
> -rtm is with our patches added, -rt is backport without.
Now same tree, turn off PREEMPT_FULL so the kernel is plain old PREEMPT.
Again, -rt is without your patches, -rtm with, followed by backing out
all ipc backports to end up at pre scalability series to show what the
set gains on this box.
vogelweide:/abuild/mike/:[0]# uname -r
3.8.13-rt9-rt
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 19102372, ops/sec 636745
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 19877668, ops/sec 662588
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 19610632, ops/sec 653687
vogelweide:/abuild/mike/:[0]#
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.893317 seconds for 1000192 loops
per loop execution time: 1.892 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.976055 seconds for 1000192 loops
per loop execution time: 1.975 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.651162 seconds for 1000192 loops
per loop execution time: 1.650 usec
vogelweide:/abuild/mike/:[0]# uname -r
3.8.13-rt9-rtm
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 22053968, ops/sec 735132
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 21295310, ops/sec 709843
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 21458002, ops/sec 715266
vogelweide:/abuild/mike/:[0]#
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.858765 seconds for 1000192 loops
per loop execution time: 1.858 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.806943 seconds for 1000192 loops
per loop execution time: 1.806 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 1.854004 seconds for 1000192 loops
per loop execution time: 1.853 usec
All ipc patches backed out.
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 8885026, ops/sec 296167
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 8791676, ops/sec 293055
vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64
cpus 64, threads: 256, semaphores: 64, test duration: 30 secs
total operations: 8301092, ops/sec 276703
vogelweide:/abuild/mike/:[0]#
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 10.750488 seconds for 1000192 loops
per loop execution time: 10.748 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 10.737264 seconds for 1000192 loops
per loop execution time: 10.735 usec
vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0
osim <sems> <tasks> <loops> <busy-in> <busy-out>
osim: using a semaphore array with 64 semaphores.
osim: using 256 tasks.
osim: each thread loops 3907 times
osim: each thread busyloops 0 loops outside and 0 loops inside.
total execution time: 10.756395 seconds for 1000192 loops
per loop execution time: 10.754 usec
next prev parent reply other threads:[~2013-06-01 11:04 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-26 9:08 [PATCH 0/4] ipc/sem.c: Bug fixes, regression fixes, v3 Manfred Spraul
2013-05-26 9:08 ` [PATCH 1/4] ipc/sem.c: Fix missing wakeups in do_smart_update_queue() Manfred Spraul
2013-05-27 17:51 ` Rik van Riel
2013-05-27 19:53 ` Manfred Spraul
2013-05-26 9:08 ` [PATCH 2/4] ipc/sem: seperate wait-for-zero and alter tasks into seperate queues Manfred Spraul
2013-05-27 17:57 ` Rik van Riel
2013-06-01 9:20 ` Manfred Spraul
2013-06-01 10:03 ` Mike Galbraith
2013-06-01 10:05 ` Mike Galbraith
2013-06-01 11:04 ` Mike Galbraith [this message]
2013-06-01 11:52 ` Manfred Spraul
2013-05-26 9:08 ` [PATCH 3/4] ipc/sem.c: Always use only one queue for alter operations Manfred Spraul
2013-05-27 18:00 ` Rik van Riel
2013-05-26 9:08 ` [PATCH 4/4] ipc/sem.c: Rename try_atomic_semop() to perform_atomic_semop(), docu update Manfred Spraul
2013-05-27 17:59 ` Rik van Riel
2013-05-26 17:37 ` [PATCH 0/4] ipc/sem.c: Bug fixes, regression fixes, v3 Linus Torvalds
2013-05-26 20:50 ` Davidlohr Bueso
2013-05-26 22:59 ` Linus Torvalds
2013-05-27 15:57 ` Manfred Spraul
2013-05-28 20:37 ` Davidlohr Bueso
2013-05-27 2:04 ` Greg KH
2013-05-27 17:50 ` Rik van Riel
2013-05-27 19:57 ` Greg KH
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=1370084658.7268.19.camel@marge.simpson.net \
--to=efault@gmx.de \
--cc=akpm@linux-foundation.org \
--cc=davidlohr.bueso@hp.com \
--cc=hhuang@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=manfred@colorfullife.com \
--cc=riel@redhat.com \
--cc=torvalds@linux-foundation.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome