From: Jens Axboe <axboe@suse.de>
To: Christoph Hellwig <hch@infradead.org>,
torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] slabify iocontext + request_queue
Date: Sat, 15 May 2004 19:30:04 +0200 [thread overview]
Message-ID: <20040515173004.GA962@suse.de> (raw)
In-Reply-To: <20040515190735.A4189@infradead.org>
On Sat, May 15 2004, Christoph Hellwig wrote:
> this just went in:
>
> > From: Jens Axboe <axboe@suse.de>
> >
> > Move both request_queue and io_context allocation to a slab cache.
> >
> > This is mainly a space-saving exercise. Some setups have a lot of disks
> > and the kmalloc rounding-up can consume significant amounts of memory.
>
> While I agree on the io_context part, slabifying request_queue is a space
> waste on most machines out there. The averange desktop has less than a
> handfull of these, and even for smaller servers it doesn't exactly look
> like a gain.
See the thread last week on queue congestion threshold calculations,
there were some numbers in there.
--
Jens Axboe
next prev parent reply other threads:[~2004-05-15 19:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-15 18:07 [PATCH] slabify iocontext + request_queue Christoph Hellwig
2004-05-15 17:30 ` Jens Axboe [this message]
2004-05-15 19:50 ` Christoph Hellwig
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=20040515173004.GA962@suse.de \
--to=axboe@suse.de \
--cc=hch@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@osdl.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.