linux-kernel - Re: [PATCH 2/2] cfq: allow dispatching of both sync and async I/O together

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <x49k4prf8gn.fsf@segfault.boston.devel.redhat.com>
Date:	Tue, 22 Jun 2010 10:27:52 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] cfq: allow dispatching of both sync and async I/O together

Vivek Goyal <vgoyal@...hat.com> writes:

> On Tue, Jun 22, 2010 at 08:45:54AM -0400, Jeff Moyer wrote:
>> Vivek Goyal <vgoyal@...hat.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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/