From: Phillip Susi <psusi@ubuntu.com>
To: stan@hardwarefreak.com, Larry Fenske <LFenske@SGI.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Very long raid5 init/rebuild times
Date: Tue, 04 Feb 2014 15:16:36 -0500 [thread overview]
Message-ID: <52F14AA4.9020402@ubuntu.com> (raw)
In-Reply-To: <52F13C66.9030200@hardwarefreak.com>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 2/4/2014 2:15 PM, Stan Hoeppner wrote:
> I never argued that the buffer cache path is slower. It is in fact
> much faster in most cases.
>
> I argued that accurately measuring the actual data throughput at
> the disks isn't possible when writing through buffer cache. At
> least not in a straightforward manner as with O_DIRECT. I've made
> the point in the last two or three replies. Yet instead of
> directly addressing that, rebutting that, you keep making these
> tangential irrelevant arguments...
You originally said "To significantly increase single streaming
throughput you need AIO." Now you appear to be saying otherwise.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (MingW32)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
iQEcBAEBAgAGBQJS8UqkAAoJEI5FoCIzSKrwIMYH/AvTA9Z1+SGarMym9hy1DPis
czb3W4+MVeisH2QwyfTbMPkicOw4pffa3Hc9ZLLI0yvGnU8b6XbFvG+2sWYBtqhj
HQX1Osjy0ZP7GuVU5TtydbNNXba4f+iIm6FIpzX3eseAjZgBJeDeG2s0oePw8q/d
b+P0PAZSqA99CNNpqOw7GTnYZqh++SM9CYPmr7KC4LYFyaqklj3eS0XQPDT+rbej
K1ly2ZibE348Nol/A6gT63x6WnuMFj4jAUK40O//farqbjsDTJgWaz9x0aV58c6x
Uxsrzx9a92tZC5AL0BW6dqLeY0BMZ3j9hqF/51nz5MrGtzm7qninrsSp1hJJRuM=
=Ls3I
-----END PGP SIGNATURE-----
next prev parent reply other threads:[~2014-02-04 20:16 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-21 7:35 Very long raid5 init/rebuild times Marc MERLIN
2014-01-21 16:37 ` Marc MERLIN
2014-01-21 17:08 ` Mark Knecht
2014-01-21 18:42 ` Chris Murphy
2014-01-22 7:55 ` Stan Hoeppner
2014-01-22 17:48 ` Marc MERLIN
2014-01-22 23:17 ` Stan Hoeppner
2014-01-23 14:28 ` John Stoffel
2014-01-24 1:02 ` Stan Hoeppner
2014-01-24 3:07 ` NeilBrown
2014-01-24 8:24 ` Stan Hoeppner
2014-01-23 2:37 ` Stan Hoeppner
2014-01-23 9:13 ` Marc MERLIN
2014-01-23 12:24 ` Stan Hoeppner
2014-01-23 21:01 ` Marc MERLIN
2014-01-24 5:13 ` Stan Hoeppner
2014-01-25 8:36 ` Marc MERLIN
2014-01-28 7:46 ` Stan Hoeppner
2014-01-28 16:50 ` Marc MERLIN
2014-01-29 0:56 ` Stan Hoeppner
2014-01-29 1:01 ` Marc MERLIN
2014-01-30 20:47 ` Phillip Susi
2014-02-01 22:39 ` Stan Hoeppner
2014-02-02 18:53 ` Phillip Susi
2014-02-03 6:34 ` Stan Hoeppner
2014-02-03 14:42 ` Phillip Susi
2014-02-04 3:30 ` Stan Hoeppner
2014-02-04 17:59 ` Larry Fenske
2014-02-04 18:08 ` Phillip Susi
2014-02-04 18:43 ` Stan Hoeppner
2014-02-04 18:55 ` Phillip Susi
2014-02-04 19:15 ` Stan Hoeppner
2014-02-04 20:16 ` Phillip Susi [this message]
2014-02-04 21:58 ` Stan Hoeppner
2014-02-05 1:19 ` Phillip Susi
2014-02-05 1:42 ` Stan Hoeppner
2014-01-30 20:36 ` Phillip Susi
2014-01-30 20:18 ` Phillip Susi
2014-01-22 19:38 ` Opal 2.0 SEDs on linux, was: " Chris Murphy
2014-01-21 18:31 ` Chris Murphy
2014-01-22 13:46 ` Ethan Wilson
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=52F14AA4.9020402@ubuntu.com \
--to=psusi@ubuntu.com \
--cc=LFenske@SGI.com \
--cc=linux-raid@vger.kernel.org \
--cc=stan@hardwarefreak.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 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.