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From: William Lee Irwin III <wli@holomorphy.com>
To: Dave Hansen <haveblue@us.ibm.com>
Cc: Andrew Morton <akpm@digeo.com>,
	colpatch@us.ibm.com, "Martin J. Bligh" <mbligh@aracnet.com>,
	Michael Hohnbaum <hohnbaum@us.ibm.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] per-zone^Wnode kswapd process
Date: Fri, 13 Sep 2002 16:46:53 -0700	[thread overview]
Message-ID: <20020913234653.GF3530@holomorphy.com> (raw)
In-Reply-To: <3D826C25.5050609@us.ibm.com>

On Fri, Sep 13, 2002 at 03:52:21PM -0700, Dave Hansen wrote:
> Here's a per-node kswapd.  It's actually per-pg_data_t, but I guess that 
> they're equivalent.  Matt is going to follow up his topology API with 
> something to bind these to their respective nodes.

>From 64 parallel tiobench 64's (higher counts livelock in fork() etc.):

   38 root      15   0     0    0     0 RW   23.0  0.0   1:11 kswapd0
 4779 wli       22   0  4460 3588  1648 R    17.9  0.0   0:16 top

...

 4779 wli       25   0  4460 3592  1648 R    14.1  0.0   0:27 top
   38 root      15   0     0    0     0 DW    3.5  0.0   1:31 kswapd0

...

OTOH, with such a small task count, ZONE_NORMAL is the only thing
feeling pressure anyway. There's also very little cpu pressure:
CPU states:   0.2% user,   6.4% system,   0.0% nice,  93.4% idle

Cheers,
Bill

  parent reply	other threads:[~2002-09-13 23:48 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-13  3:33 [PATCH] per-zone " Dave Hansen
2002-09-13  4:06 ` Andrew Morton
2002-09-13  4:59   ` William Lee Irwin III
2002-09-13  5:10     ` Martin J. Bligh
     [not found]       ` <3D8232DE.9090000@us.ibm.com>
     [not found]         ` <3D823702.8E29AB4F@digeo.com>
     [not found]           ` <3D8251D6.3060704@us.ibm.com>
     [not found]             ` <3D82566B.EB2939D5@digeo.com>
2002-09-13 22:52               ` [PATCH] per-zone^Wnode " Dave Hansen
2002-09-13 23:24                 ` Matthew Dobson
2002-09-13 23:29                 ` Matthew Dobson
2002-09-13 23:46                 ` William Lee Irwin III [this message]
2002-09-14  0:02                   ` Andrew Morton
2002-09-14  0:12                     ` William Lee Irwin III
2002-09-14  1:19                       ` Andrew Morton
2002-09-13  5:46     ` [PATCH] per-zone " Andrew Morton
2002-09-13  5:38       ` Martin J. Bligh
2002-09-13  6:03         ` Andrew Morton
2002-09-13 13:05     ` Alan Cox
2002-09-13 21:30       ` William Lee Irwin III
2002-09-18 16:07         ` [PATCH] recognize MAP_LOCKED in mmap() call Hubertus Franke
2002-09-18 16:29           ` Andrew Morton
2002-09-16  5:44     ` [PATCH] per-zone kswapd process Daniel Phillips
2002-09-16  7:46       ` William Lee Irwin III
2002-09-16 15:12         ` Rik van Riel

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