From: Rene Herman <rene.herman@gmail.com>
To: Bongani Hlope <bhlope@mweb.co.za>
Cc: Robert Deaton <false.hopes@gmail.com>,
linux-kernel@vger.kernel.org, ck list <ck@vds.kolivas.org>,
linux-mm@kvack.org
Subject: Re: updatedb
Date: Thu, 26 Jul 2007 10:01:11 +0200 [thread overview]
Message-ID: <46A854C7.4060908@gmail.com> (raw)
In-Reply-To: <200707260908.02781.bhlope@mweb.co.za>
On 07/26/2007 09:08 AM, Bongani Hlope wrote:
> On Thursday 26 July 2007 08:56:59 Rene Herman wrote:
>> Great. Now concentrate on the "swpd" column, as it's the only thing
>> relevant here. The fact that an updatedb run fills/replaces caches is
>> completely and utterly unsurprising and not something swap-prefetch
>> helps with. The only thing it does is bring back stuff from _swap_.
>
> ;)
>
> I have 2Gb of RAM and I never ever touched swap on all my work loads. I
> was just showing the behavior of updatedb on my desktop. I have never
> even looked at the swap-prefetch patch (for obvious reasons).
I see... thanks for the report :)
> I think people should also look at their /proc/sys/vm/overcommit_ratio
In the sense that current stuff might be evicted earlier with no or little
overcommit?
Rene.
WARNING: multiple messages have this Message-ID (diff)
From: Rene Herman <rene.herman@gmail.com>
To: Bongani Hlope <bhlope@mweb.co.za>
Cc: Robert Deaton <false.hopes@gmail.com>,
linux-kernel@vger.kernel.org, ck list <ck@vds.kolivas.org>,
linux-mm@kvack.org
Subject: Re: updatedb
Date: Thu, 26 Jul 2007 10:01:11 +0200 [thread overview]
Message-ID: <46A854C7.4060908@gmail.com> (raw)
In-Reply-To: <200707260908.02781.bhlope@mweb.co.za>
On 07/26/2007 09:08 AM, Bongani Hlope wrote:
> On Thursday 26 July 2007 08:56:59 Rene Herman wrote:
>> Great. Now concentrate on the "swpd" column, as it's the only thing
>> relevant here. The fact that an updatedb run fills/replaces caches is
>> completely and utterly unsurprising and not something swap-prefetch
>> helps with. The only thing it does is bring back stuff from _swap_.
>
> ;)
>
> I have 2Gb of RAM and I never ever touched swap on all my work loads. I
> was just showing the behavior of updatedb on my desktop. I have never
> even looked at the swap-prefetch patch (for obvious reasons).
I see... thanks for the report :)
> I think people should also look at their /proc/sys/vm/overcommit_ratio
In the sense that current stuff might be evicted earlier with no or little
overcommit?
Rene.
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next prev parent reply other threads:[~2007-07-26 8:03 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-25 15:30 howto get a patch merged (WAS: Re: -mm merge plans for 2.6.23) Kacper Wysocki
2007-07-25 15:30 ` Kacper Wysocki
2007-07-25 16:01 ` Rene Herman
2007-07-25 16:01 ` Rene Herman
2007-07-25 17:15 ` Robert Deaton
2007-07-25 17:15 ` Robert Deaton
2007-07-26 3:59 ` updatedb Rene Herman
2007-07-26 3:59 ` updatedb Rene Herman
2007-07-26 6:23 ` updatedb Andika Triwidada
2007-07-26 6:23 ` updatedb Andika Triwidada
2007-07-26 7:49 ` updatedb Rene Herman
2007-07-26 7:49 ` updatedb Rene Herman
2007-07-26 9:37 ` updatedb Andika Triwidada
2007-07-26 9:37 ` updatedb Andika Triwidada
2007-07-27 0:46 ` updatedb Jesper Juhl
2007-07-27 0:46 ` updatedb Jesper Juhl
2007-07-27 6:00 ` updatedb Rene Herman
2007-07-27 6:00 ` updatedb Rene Herman
2007-07-27 7:54 ` updatedb Mike Galbraith
2007-07-27 7:54 ` updatedb Mike Galbraith
2007-07-27 8:28 ` updatedb Rene Herman
2007-07-27 8:28 ` updatedb Rene Herman
2007-07-27 9:26 ` updatedb Mike Galbraith
2007-07-27 9:26 ` updatedb Mike Galbraith
2007-07-27 11:09 ` updatedb Rene Herman
2007-07-27 11:09 ` updatedb Rene Herman
2007-07-27 11:48 ` updatedb Mike Galbraith
2007-07-27 11:48 ` updatedb Mike Galbraith
2007-07-27 12:28 ` updatedb Rene Herman
2007-07-27 12:28 ` updatedb Rene Herman
2007-07-27 13:32 ` updatedb Tilman Schmidt
2007-07-26 6:39 ` updatedb Bongani Hlope
2007-07-26 6:39 ` updatedb Bongani Hlope
2007-07-26 6:56 ` updatedb Rene Herman
2007-07-26 6:56 ` updatedb Rene Herman
2007-07-26 7:08 ` updatedb Bongani Hlope
2007-07-26 7:08 ` updatedb Bongani Hlope
2007-07-26 8:01 ` Rene Herman [this message]
2007-07-26 8:01 ` updatedb Rene Herman
2007-07-26 21:25 ` updatedb Bongani Hlope
2007-07-26 21:25 ` updatedb Bongani Hlope
2007-07-26 9:58 ` updatedb Björn Steinbrink
2007-07-26 9:58 ` updatedb Björn Steinbrink
2007-07-26 10:23 ` updatedb Björn Steinbrink
2007-07-26 10:23 ` updatedb Björn Steinbrink
2007-07-26 11:00 ` updatedb Rene Herman
2007-07-26 11:00 ` updatedb Rene Herman
2007-07-26 13:54 ` Re: howto get a patch merged (WAS: Re: -mm merge plans for 2.6.23) Jos Poortvliet
2007-07-25 16:07 ` Ingo Molnar
2007-07-25 16:07 ` Ingo Molnar
2007-07-25 16:40 ` [ck] " Michael Chang
2007-07-25 16:40 ` Michael Chang
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