From: Mark Lord <liml@rtr.ca>
To: Shaohua Li <shaohua.li@intel.com>
Cc: Jeff Garzik <jgarzik@pobox.com>,
linux-ide <linux-ide@vger.kernel.org>,
"tj@kernel.org" <tj@kernel.org>,
"Zhang, Yanmin" <yanmin.zhang@intel.com>
Subject: Re: NCQ is slower in some cases?
Date: Thu, 23 Jul 2009 11:39:21 -0400 [thread overview]
Message-ID: <4A688429.50800@rtr.ca> (raw)
In-Reply-To: <20090723054804.GB7473@sli10-desk.sh.intel.com>
Shaohua Li wrote:
>
> I just occasionally did the test and hadn't resource to do a full test.
> I tested two hard disks (one from WDC the other Seegate), both have the
> same behavior. If it's possible hardware will slower with NCQ in some
> cases, I'll not borther spending time on it any more.
> So can you guys suggest if the issue is related with hardware?
..
WD Raptor drives were one of the known "slower with NCQ" drives,
except for random I/O of course.
Cheers
next prev parent reply other threads:[~2009-07-23 15:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-23 3:44 NCQ is slower in some cases? Shaohua Li
2009-07-23 4:01 ` Jeff Garzik
2009-07-23 5:48 ` Shaohua Li
2009-07-23 15:39 ` Mark Lord [this message]
2009-07-23 18:04 ` Robert Hancock
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=4A688429.50800@rtr.ca \
--to=liml@rtr.ca \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.org \
--cc=shaohua.li@intel.com \
--cc=tj@kernel.org \
--cc=yanmin.zhang@intel.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.