From: Nick Piggin <piggin@cyberone.com.au>
To: Anton Blanchard <anton@samba.org>
Cc: Rick Lindsley <ricklind@us.ibm.com>,
"Martin J. Bligh" <mbligh@aracnet.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org, dvhltc@us.ibm.com
Subject: Re: [PATCH] Load balancing problem in 2.6.2-mm1
Date: Sun, 08 Feb 2004 14:20:32 +1100 [thread overview]
Message-ID: <4025AB00.3030601@cyberone.com.au> (raw)
In-Reply-To: <20040208014141.GX19011@krispykreme>
Anton Blanchard wrote:
>>Does active balancing still work? Ie. get two processes running on the
>>same physical CPU and see if one is migrated away.
>>
>
>Both Ricks patch and your patch still have the active rebalance issue.
>
>Martins patch doesnt, but that seems to be because it does absolutely no
>rebalancing (all my runnable tasks are on one physical cpu) :)
>
>
Yeah its because you have a lot of cpus, so the average is still
small. You also need something like
if (*imbalance == 0 && max_load - this_load > SCHED_LOAD_SCALE)
*imbalance = 1;
I don't have a >= 4 CPU box to test on, so I hate to be feeding
you lots of little unproven patches.
next prev parent reply other threads:[~2004-02-08 3:21 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-06 9:24 [PATCH] Load balancing problem in 2.6.2-mm1 Rick Lindsley
2004-02-06 9:38 ` Nick Piggin
2004-02-06 18:13 ` Rick Lindsley
2004-02-06 21:57 ` Nick Piggin
2004-02-06 22:30 ` Rick Lindsley
2004-02-06 22:40 ` Nick Piggin
2004-02-06 22:49 ` Rick Lindsley
2004-02-06 23:08 ` Nick Piggin
2004-02-06 10:30 ` Anton Blanchard
2004-02-06 18:15 ` Rick Lindsley
2004-02-06 18:39 ` Martin J. Bligh
2004-02-06 22:02 ` Nick Piggin
2004-02-06 22:34 ` Rick Lindsley
2004-02-06 22:48 ` Nick Piggin
2004-02-06 22:42 ` Martin J. Bligh
2004-02-06 22:53 ` Nick Piggin
2004-02-06 23:11 ` Rick Lindsley
2004-02-06 23:20 ` Nick Piggin
2004-02-06 23:33 ` Martin J. Bligh
2004-02-06 23:41 ` Nick Piggin
2004-02-06 23:47 ` Martin J. Bligh
2004-02-07 0:11 ` Nick Piggin
2004-02-07 0:25 ` Martin J. Bligh
2004-02-07 0:31 ` Nick Piggin
2004-02-07 9:50 ` Anton Blanchard
2004-02-08 0:40 ` Rick Lindsley
2004-02-08 1:12 ` Anton Blanchard
2004-02-08 1:21 ` Nick Piggin
2004-02-08 1:41 ` Anton Blanchard
2004-02-08 3:20 ` Nick Piggin [this message]
2004-02-08 3:57 ` Anton Blanchard
2004-02-08 4:05 ` Nick Piggin
2004-02-08 12:14 ` Anton Blanchard
2004-02-08 1:22 ` Anton Blanchard
2004-02-09 16:37 ` Timothy Miller
2004-02-09 16:43 ` Martin J. Bligh
2004-02-06 18:33 ` Martin J. Bligh
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