From: David Chinner <dgc@sgi.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: Mariella Petrini <mariellapetrini@yahoo.com>, xfs@oss.sgi.com
Subject: Re: xfs and Linux Linux 2.6.22 and Memory
Date: Fri, 21 Sep 2007 09:34:05 +1000 [thread overview]
Message-ID: <20070920233405.GA995458@sgi.com> (raw)
In-Reply-To: <46F2E001.4040107@sandeen.net>
On Thu, Sep 20, 2007 at 04:02:57PM -0500, Eric Sandeen wrote:
> Mariella Petrini wrote:
>
> > QUESTION:
> >
> > Is there any way to release that amount of memory
> > without unmounting the file systems ?
> > Is that caused to some caching mechanism ?
> > Or could that be caused by something else ?
>
> It's most likely the linux VFS caching the dentries & inodes, and
> therefore caching the xfs inodes as well.
Not just inodes, but file data in the page cache as well.
If you want to blow it all away without unmountin filesystems, then
you should read up on /proc/sys/vm sysctls (i.e.
/proc/sys/vm/drop_caches)....
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
next prev parent reply other threads:[~2007-09-20 23:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-20 19:17 xfs and Linux Linux 2.6.22 and Memory Mariella Petrini
2007-09-20 21:02 ` Eric Sandeen
2007-09-20 23:34 ` David Chinner [this message]
2007-09-21 2:14 ` Mariella Petrini
2007-09-21 3:13 ` Jason White
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