From: Jeff Moyer <jmoyer@redhat.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] cfq: allow dispatching of both sync and async I/O together
Date: Tue, 22 Jun 2010 10:27:52 -0400 [thread overview]
Message-ID: <x49k4prf8gn.fsf@segfault.boston.devel.redhat.com> (raw)
In-Reply-To: <20100622131853.GB13153@redhat.com> (Vivek Goyal's message of "Tue, 22 Jun 2010 09:18:53 -0400")
Vivek Goyal <vgoyal@redhat.com> writes:
> On Tue, Jun 22, 2010 at 08:45:54AM -0400, Jeff Moyer wrote:
>> Vivek Goyal <vgoyal@redhat.com> writes:
>>
>> > On Mon, Jun 21, 2010 at 07:22:08PM -0400, Vivek Goyal wrote:
>> > So looks like firefox launching times have not changed much in the presence
>> > of heavy buffered writting going on root disk. I will do more testing tomorrow.
>>
>> Was the buffered writer actually hitting disk? How much memory is on
>> your system?
>
> I have 4G of memory in the system. I used to wait for 10-15 seconds after
> writer has started and then launch firefox to make sure writes are actually
> hitting the disk.
>
> Are you seeing different results in your testing?
No, I hadn't got to testing this yet. I was just making sure the test
procedure was sane (and it is). Thanks for doing the testing!
-Jeff
next prev parent reply other threads:[~2010-06-22 14:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 19:49 [PATCH 0/2] cfq: fixes to bring cfq in line with deadline performance for mid- to high-end storage Jeff Moyer
2010-06-21 19:49 ` [PATCH 1/2] cfq: always return false from should_idle if slice_idle is set to zero Jeff Moyer
2010-06-21 20:00 ` Jens Axboe
2010-06-28 18:41 ` Jeff Moyer
2010-06-28 18:50 ` Jens Axboe
2010-06-28 18:54 ` Jeff Moyer
2010-06-21 23:05 ` Vivek Goyal
2010-06-21 19:49 ` [PATCH 2/2] cfq: allow dispatching of both sync and async I/O together Jeff Moyer
2010-06-21 19:59 ` Jens Axboe
2010-06-21 20:05 ` Jeff Moyer
2010-06-21 23:22 ` Vivek Goyal
2010-06-22 4:07 ` Vivek Goyal
2010-06-22 12:45 ` Jeff Moyer
2010-06-22 13:18 ` Vivek Goyal
2010-06-22 13:21 ` Jens Axboe
2010-06-22 14:24 ` Vivek Goyal
2010-06-22 14:27 ` Jeff Moyer [this message]
2010-06-28 18:40 ` Jeff Moyer
2010-06-28 18:48 ` Jens Axboe
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=x49k4prf8gn.fsf@segfault.boston.devel.redhat.com \
--to=jmoyer@redhat.com \
--cc=axboe@kernel.dk \
--cc=linux-kernel@vger.kernel.org \
--cc=vgoyal@redhat.com \
/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;
as well as URLs for NNTP newsgroup(s).