From: Bill Davidsen <davidsen@tmr.com>
To: Paolo Ornati <ornati@fastwebnet.it>
Cc: lgb@lgb.hu, linux-kernel@vger.kernel.org
Subject: Re: Kernel cached memory
Date: Mon, 25 Jul 2005 14:02:19 -0400 [thread overview]
Message-ID: <42E5292B.9080703@tmr.com> (raw)
In-Reply-To: <20050725190731.0d634842@localhost>
Paolo Ornati wrote:
>On Mon, 25 Jul 2005 12:47:50 -0400
>Bill Davidsen <davidsen@tmr.com> wrote:
>
>
>
>>And IMHO Linux is *way* too willing to evicy clean pages of my
>>programs to use as disk buffer, so that when system memory is full I
>>pay the overhead of TWO disk i/o's, one to finally write the data to
>>the disk and one to read my program back in. If free software is
>>about choice, I wish there was more in the area of how memory is
>>used.
>>
>>
>
>isn't this tuned enough by "/proc/sys/vm/swappiness" ?
>
>
>
Let me generate some data points for discussion. But the general answer
is no, I just want to try to have some numbers to discuss. I also want
to go back to some 2.4.xx-aa kernels, Andrea had some very nice things
in his bdflush code, and he was kind enough to explain to me how to tune
them so I avoided the worst case events.
--
bill davidsen <davidsen@tmr.com>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
next prev parent reply other threads:[~2005-07-25 17:53 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-22 9:46 Kernel cached memory Ashley
2005-07-22 11:31 ` Diego Calleja
2005-07-22 12:57 ` Erik Mouw
2005-07-22 21:43 ` John Pearson
2005-07-23 12:31 ` Denis Vlasenko
2005-07-22 13:25 ` Gábor Lénárt
2005-07-22 17:58 ` Lee Revell
2005-07-23 10:50 ` Oliver Neukum
2005-07-25 16:47 ` Bill Davidsen
2005-07-25 17:03 ` Diego Calleja
2005-07-25 17:07 ` Paolo Ornati
2005-07-25 18:02 ` Bill Davidsen [this message]
2005-08-01 10:38 ` Gábor Lénárt
2005-08-01 21:08 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2005-07-26 0:35 Chuck Ebbert
[not found] <4t5s8-68A-33@gated-at.bofh.it>
[not found] ` <4tdIU-479-9@gated-at.bofh.it>
2005-07-26 5:03 ` Robert Hancock
2005-07-26 15:00 ` Bill Davidsen
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