From: Lee Revell <rlrevell@joe-job.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Mark Knecht <markknecht@gmail.com>, Ingo Molnar <mingo@elte.hu>,
Daniel Walker <dwalker@mvista.com>,
linux-kernel@vger.kernel.org
Subject: Re: Latency data - 2.6.14-rc3-rt13
Date: Wed, 12 Oct 2005 12:18:22 -0400 [thread overview]
Message-ID: <1129133902.10599.10.camel@mindpipe> (raw)
In-Reply-To: <Pine.LNX.4.58.0510120233300.5830@localhost.localdomain>
On Wed, 2005-10-12 at 02:38 -0400, Steven Rostedt wrote:
> On Tue, 11 Oct 2005, Lee Revell wrote:
>
> > On Tue, 2005-10-11 at 18:09 -0700, Mark Knecht wrote:
> > > Should free memory drop like that over time?
> >
> > Yes this is perfectly normal. When a system first boots all the memory
> > your apps aren't using is initially free. As applications access more
> > data over time then it will be cached in memory until free memory drops
> > to near zero.
> >
> > "Free memory" is actually wasted memory - it's better to use all
> > available RAM for caching.
> >
>
> But the swap being touched bothers me. Although I've had problems with
> leaving Mozilla up for long times and it leaking. Without Mozilla running
> and running lots of other apps, I have almost 100% memory used, but 0%
> swap.
I believe this is the expected behavior under 2.6 unless you
set /proc/sys/vm/swappiness to 0. If an app allocates memory and then
never touches it then those pages will eventually be swapped out to make
room for hot ones.
Lee
next prev parent reply other threads:[~2005-10-12 16:18 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-10 20:16 Latency data - 2.6.14-rc3-rt13 Mark Knecht
2005-10-10 20:49 ` Daniel Walker
2005-10-10 21:12 ` Mark Knecht
2005-10-10 21:28 ` Mark Knecht
2005-10-10 21:44 ` Daniel Walker
2005-10-10 22:09 ` Mark Knecht
2005-10-10 22:28 ` Daniel Walker
2005-10-10 23:33 ` Mark Knecht
2005-10-10 23:49 ` Mark Knecht
2005-10-11 3:45 ` Mark Knecht
2005-10-11 6:46 ` Steven Rostedt
2005-10-11 8:56 ` Sven-Thorsten Dietrich
2005-10-11 11:17 ` Ingo Molnar
2005-10-11 22:45 ` Mark Knecht
2005-10-12 0:02 ` Lee Revell
2005-10-12 1:09 ` Mark Knecht
2005-10-12 1:21 ` Lee Revell
2005-10-12 1:25 ` Mark Knecht
2005-10-12 6:38 ` Steven Rostedt
2005-10-12 16:18 ` Lee Revell [this message]
2005-10-12 17:03 ` Steven Rostedt
2005-10-11 3:56 ` Matan Peled
2005-10-11 4:45 ` Mark Knecht
2005-10-11 6:14 ` Ingo Molnar
2005-10-11 7:53 ` Ingo Molnar
2005-10-10 21:39 ` Daniel Walker
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