From: Ingo Molnar <mingo@elte.hu>
To: Andi Kleen <ak@suse.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
jun.nakajima@intel.com, ricklind@us.ibm.com,
linux-kernel@vger.kernel.org, akpm@osdl.org, kernel@kolivas.org,
rusty@rustcorp.com.au, anton@samba.org,
lse-tech@lists.sourceforge.net, mbligh@aracnet.com
Subject: Re: [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3
Date: Tue, 30 Mar 2004 08:40:15 +0200 [thread overview]
Message-ID: <20040330064015.GA19036@elte.hu> (raw)
In-Reply-To: <20040330083450.368eafc6.ak@suse.de>
* Andi Kleen <ak@suse.de> wrote:
> > So both -mm5 and Ingo's sched.patch are much worse than
> > what 2.4 and 2.6 get?
>
> Yes (2.6 vanilla and 2.4-aa at that, i haven't tested 2.4-vanilla)
>
> Ingo's sched.patch makes it a bit better (from 1x CPU to 1.5-1.7xCPU),
> but still much worse than the max of 3.7x-4x CPU bandwidth.
Andi, could you please try the patch below - this will test whether this
has to do with the rate of balancing between NUMA nodes. The patch
itself is not correct (it way overbalances on NUMA), but it tests the
theory.
Ingo
--- linux/include/linux/sched.h.orig
+++ linux/include/linux/sched.h
@@ -627,7 +627,7 @@ struct sched_domain {
.parent = NULL, \
.groups = NULL, \
.min_interval = 8, \
- .max_interval = 256*fls(num_online_cpus()),\
+ .max_interval = 8, \
.busy_factor = 8, \
.imbalance_pct = 125, \
.cache_hot_time = (10*1000000), \
next prev parent reply other threads:[~2004-03-30 6:39 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-25 15:31 [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3 Nakajima, Jun
2004-03-25 15:40 ` Andi Kleen
2004-03-25 19:09 ` Ingo Molnar
2004-03-25 15:21 ` Andi Kleen
2004-03-25 19:39 ` Ingo Molnar
2004-03-25 20:30 ` Ingo Molnar
2004-03-29 8:45 ` Andi Kleen
2004-03-29 10:20 ` Rick Lindsley
2004-03-29 5:07 ` Andi Kleen
2004-03-29 11:28 ` Nick Piggin
2004-03-29 17:30 ` Rick Lindsley
2004-03-30 0:01 ` Nick Piggin
2004-03-30 1:26 ` Rick Lindsley
2004-03-29 11:20 ` Nick Piggin
2004-03-29 6:01 ` Andi Kleen
2004-03-29 11:46 ` Ingo Molnar
2004-03-29 7:03 ` Andi Kleen
2004-03-29 7:10 ` Andi Kleen
2004-03-29 20:14 ` Andi Kleen
2004-03-29 23:51 ` Nick Piggin
2004-03-30 6:34 ` Andi Kleen
2004-03-30 6:40 ` Ingo Molnar [this message]
2004-03-30 7:07 ` Andi Kleen
2004-03-30 7:14 ` Nick Piggin
2004-03-30 7:45 ` Ingo Molnar
2004-03-30 7:58 ` Nick Piggin
2004-03-30 7:15 ` Ingo Molnar
2004-03-30 7:18 ` Nick Piggin
2004-03-30 7:48 ` Andi Kleen
2004-03-30 8:18 ` Ingo Molnar
2004-03-30 9:36 ` Andi Kleen
2004-03-30 7:42 ` Ingo Molnar
2004-03-30 7:03 ` Nick Piggin
2004-03-30 7:13 ` Andi Kleen
2004-03-30 7:24 ` Nick Piggin
2004-03-30 7:38 ` Arjan van de Ven
2004-03-30 7:13 ` Martin J. Bligh
2004-03-30 7:31 ` Nick Piggin
2004-03-30 7:38 ` Martin J. Bligh
2004-03-30 8:05 ` Ingo Molnar
2004-03-30 8:19 ` Nick Piggin
2004-03-30 8:45 ` Ingo Molnar
2004-03-30 8:53 ` Nick Piggin
2004-03-30 15:27 ` Martin J. Bligh
2004-03-25 19:24 ` Martin J. Bligh
2004-03-25 21:48 ` Ingo Molnar
2004-03-25 22:28 ` Martin J. Bligh
2004-03-29 22:30 ` Erich Focht
2004-03-30 9:05 ` Nick Piggin
2004-03-30 10:04 ` Erich Focht
2004-03-30 10:58 ` Andi Kleen
2004-03-30 16:03 ` [patch] sched-2.6.5-rc3-mm1-A0 Ingo Molnar
2004-03-31 2:30 ` Nick Piggin
2004-03-30 11:02 ` [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3 Andrew Morton
[not found] ` <20040330161438.GA2257@elte.hu>
[not found] ` <20040330161910.GA2860@elte.hu>
[not found] ` <20040330162514.GA2943@elte.hu>
2004-03-30 21:03 ` [patch] new-context balancing, 2.6.5-rc3-mm1 Ingo Molnar
2004-03-31 2:30 ` Nick Piggin
2004-03-31 18:59 ` [Lse-tech] [patch] sched-domain cleanups, sched-2.6.5-rc2-mm2-A3 Erich Focht
2004-03-31 2:08 ` Nick Piggin
2004-03-31 22:23 ` Erich Focht
2004-03-30 15:01 ` Martin J. Bligh
2004-03-31 21:23 ` Erich Focht
2004-03-31 21:33 ` Martin J. Bligh
2004-03-25 21:59 ` Ingo Molnar
2004-03-25 22:26 ` Rick Lindsley
2004-03-25 22:30 ` Andrew Theurer
2004-03-25 22:38 ` Martin J. Bligh
2004-03-26 1:29 ` Andi Kleen
2004-03-26 3:23 ` Nick Piggin
-- strict thread matches above, loose matches on Subject: below --
2004-03-30 21:40 Nakajima, Jun
2004-03-30 22:15 ` Andrew Theurer
[not found] <1DF7H-22Y-11@gated-at.bofh.it>
[not found] ` <1DL3x-7iG-7@gated-at.bofh.it>
[not found] ` <1DLGd-7TS-17@gated-at.bofh.it>
[not found] ` <1FmNz-72J-73@gated-at.bofh.it>
[not found] ` <1FnzJ-7IW-15@gated-at.bofh.it>
2004-03-30 9:39 ` Andi Kleen
2004-03-31 1:56 ` Nick Piggin
2004-03-25 15:15 Nakajima, Jun
2004-03-25 16:19 ` John Hawkes
2004-03-25 16:53 ` Martin J. Bligh
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