From: Nick Piggin <piggin@cyberone.com.au>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Anton Blanchard <anton@samba.org>, Ingo Molnar <mingo@redhat.com>,
"Martin J. Bligh" <mbligh@aracnet.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>,
Mark Wong <markw@osdl.org>
Subject: Re: [CFT][RFC] HT scheduler
Date: Fri, 12 Dec 2003 19:59:27 +1100 [thread overview]
Message-ID: <3FD9836F.2050003@cyberone.com.au> (raw)
In-Reply-To: <3FD9679A.1020404@cyberone.com.au>
Nick Piggin wrote:
>
> w26 does ALL this, while sched.o is 3K smaller than Ingo's shared
> runqueue
> patch on NUMA and SMP, and 1K smaller on UP (although sched.c is 90 lines
> longer). kernbench system time is down nearly 10% on the NUMAQ, so it
> isn't
> hurting performance either.
Hackbench performance on the NUMAQ is improved by nearly 50% at large
numbers of tasks due to a better scaling factor (which I think is slightly
"more" linear too). It is also improved by nearly 25% (4.08 vs 3.15) on
OSDLs 8 ways at small number of tasks, due to a better constant factor.
http://www.kerneltrap.org/~npiggin/w26/hbench.png
And yeah hackbench kills the NUMAQ after about 350 rooms. This is due to
memory shortages. All the processes are getting stuck in shrink_caches,
get_free_pages, etc.
next prev parent reply other threads:[~2003-12-12 8:59 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-08 4:25 [PATCH][RFC] make cpu_sibling_map a cpumask_t Nick Piggin
2003-12-08 15:59 ` Anton Blanchard
2003-12-08 23:08 ` Nick Piggin
2003-12-09 0:14 ` Anton Blanchard
2003-12-11 4:25 ` [CFT][RFC] HT scheduler Nick Piggin
2003-12-11 7:24 ` Nick Piggin
2003-12-11 8:57 ` Nick Piggin
2003-12-11 11:52 ` William Lee Irwin III
2003-12-11 13:09 ` Nick Piggin
2003-12-11 13:23 ` William Lee Irwin III
2003-12-11 13:30 ` Nick Piggin
2003-12-11 13:32 ` William Lee Irwin III
2003-12-11 15:30 ` Nick Piggin
2003-12-11 15:38 ` William Lee Irwin III
2003-12-11 15:51 ` Nick Piggin
2003-12-11 15:56 ` William Lee Irwin III
2003-12-11 16:37 ` Nick Piggin
2003-12-11 16:40 ` William Lee Irwin III
2003-12-12 1:52 ` [PATCH] improve rwsem scalability (was Re: [CFT][RFC] HT scheduler) Nick Piggin
2003-12-12 2:02 ` Nick Piggin
2003-12-12 9:41 ` Ingo Molnar
2003-12-13 0:07 ` Nick Piggin
2003-12-14 0:44 ` Nick Piggin
2003-12-17 5:27 ` Nick Piggin
2003-12-19 11:52 ` Nick Piggin
2003-12-19 15:06 ` Martin J. Bligh
2003-12-20 0:08 ` Nick Piggin
2003-12-12 0:58 ` [CFT][RFC] HT scheduler Rusty Russell
2003-12-11 10:01 ` Rhino
2003-12-11 8:14 ` Nick Piggin
2003-12-11 16:49 ` Rhino
2003-12-11 15:16 ` Nick Piggin
2003-12-11 11:40 ` William Lee Irwin III
2003-12-11 17:05 ` Rhino
2003-12-11 15:17 ` William Lee Irwin III
2003-12-11 16:28 ` Kevin P. Fleming
2003-12-11 16:41 ` Nick Piggin
2003-12-12 2:24 ` Rusty Russell
2003-12-12 7:00 ` Nick Piggin
2003-12-12 7:23 ` Rusty Russell
2003-12-13 6:43 ` Nick Piggin
2003-12-14 1:35 ` bill davidsen
2003-12-14 2:18 ` Nick Piggin
2003-12-14 4:32 ` Jamie Lokier
2003-12-14 9:40 ` Nick Piggin
2003-12-14 10:46 ` Arjan van de Ven
2003-12-16 17:46 ` Bill Davidsen
2003-12-16 18:22 ` Linus Torvalds
2003-12-17 0:24 ` Davide Libenzi
2003-12-17 0:41 ` Linus Torvalds
2003-12-17 0:54 ` Davide Libenzi
2003-12-16 17:34 ` Bill Davidsen
2003-12-15 5:53 ` Rusty Russell
2003-12-15 23:08 ` Nick Piggin
2003-12-19 4:57 ` Nick Piggin
2003-12-19 5:13 ` Nick Piggin
2003-12-20 2:43 ` Rusty Russell
2003-12-21 2:56 ` Nick Piggin
2004-01-03 18:57 ` Bill Davidsen
2003-12-15 20:21 ` Zwane Mwaikambo
2003-12-15 23:20 ` Nick Piggin
2003-12-16 0:11 ` Zwane Mwaikambo
2003-12-12 8:59 ` Nick Piggin [this message]
2003-12-12 15:14 ` Martin J. Bligh
2003-12-08 19:44 ` [PATCH][RFC] make cpu_sibling_map a cpumask_t James Cleverdon
2003-12-08 20:38 ` Ingo Molnar
2003-12-08 20:51 ` Zwane Mwaikambo
2003-12-08 20:55 ` Ingo Molnar
2003-12-08 23:17 ` Nick Piggin
2003-12-08 23:36 ` Ingo Molnar
2003-12-08 23:58 ` Nick Piggin
2003-12-08 23:46 ` Rusty Russell
2003-12-09 13:36 ` Nick Piggin
2003-12-11 21:41 ` bill davidsen
[not found] <20031213022038.300B22C2C1@lists.samba.org.suse.lists.linux.kernel>
[not found] ` <3FDAB517.4000309@cyberone.com.au.suse.lists.linux.kernel>
[not found] ` <brgeo7$huv$1@gatekeeper.tmr.com.suse.lists.linux.kernel>
[not found] ` <3FDBC876.3020603@cyberone.com.au.suse.lists.linux.kernel>
[not found] ` <20031214043245.GC21241@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <3FDC3023.9030708@cyberone.com.au.suse.lists.linux.kernel>
[not found] ` <1071398761.5233.1.camel@laptop.fenrus.com.suse.lists.linux.kernel>
2003-12-14 16:26 ` [CFT][RFC] HT scheduler Andi Kleen
2003-12-14 16:54 ` Arjan van de Ven
[not found] <200312161127.13691.habanero@us.ibm.com>
2003-12-16 17:37 ` Andrew Theurer
2003-12-17 2:41 ` Nick Piggin
-- strict thread matches above, loose matches on Subject: below --
2003-12-16 19:03 Nakajima, Jun
2003-12-17 0:38 Nakajima, Jun
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=3FD9836F.2050003@cyberone.com.au \
--to=piggin@cyberone.com.au \
--cc=anton@samba.org \
--cc=jun.nakajima@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=markw@osdl.org \
--cc=mbligh@aracnet.com \
--cc=mingo@redhat.com \
--cc=rusty@rustcorp.com.au \
/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.