From: Rik van Riel <riel@redhat.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Vasily Averin <vvs@sw.ru>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-ext4@vger.kernel.org, devel@openvz.org
Subject: Re: How Inactive may be much greather than cached?
Date: Thu, 18 Oct 2007 10:17:15 -0400 [thread overview]
Message-ID: <20071018101715.13c92b6e@bree.surriel.com> (raw)
In-Reply-To: <200710181727.01128.nickpiggin@yahoo.com.au>
On Thu, 18 Oct 2007 17:27:00 +1000
Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> Some filesystems, including I believe, ext3 with data=ordered,
> can leave orphaned pages around after they have been truncated
> out of the pagecache. These pages get left on the LRU and vmscan
> reclaims them pretty easily.
How can the VM recognize those pages? Are they part of
the buffer cache, part of the page cache, or different?
I think it would make sense to at least try to rotate
those pages to the end of the LRU so kswapd can get rid
of them quickly.
--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
prev parent reply other threads:[~2007-10-18 14:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-18 6:24 Vasily Averin
2007-10-18 6:27 ` Nick Piggin
2007-10-18 7:14 ` Vasily Averin
2007-10-18 7:27 ` Nick Piggin
2007-10-18 10:33 ` Vasily Averin
2007-10-18 14:17 ` Rik van Riel [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20071018101715.13c92b6e@bree.surriel.com \
--to=riel@redhat.com \
--cc=devel@openvz.org \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nickpiggin@yahoo.com.au \
--cc=vvs@sw.ru \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®