From: Gottfried Haider <gottfried.haider@gmail.com>
To: "Huang, Shane" <Shane.Huang@amd.com>
Cc: Borislav Petkov <bp@alien8.de>,
linux-ide@vger.kernel.org, "Petkov,
Borislav" <Borislav.Petkov@amd.com>
Subject: Re: sata link speed on amd hudson
Date: Wed, 13 Apr 2011 14:32:44 +0200 [thread overview]
Message-ID: <BANLkTimqoMAUT84se3ZGCTMkn1+ZJWJTWA@mail.gmail.com> (raw)
In-Reply-To: <1E8B869C0C6913418421A406C094DF7C011FF4A1@sshaexmb1.amd.com>
Hi Shane,
>> Can this bit be ignored/overwritten by the driver in theory?
> I'm not quite sure, but anyway driver should not ignore/overwrite
> it to modify the platform's policy, which was decided by OEM and
> verified. We don't know any regression issue either.
I understand the reasoning, just want to make clear that the disk
performance I am seeing is way below what I had expected. Now I don't
know if there is SATA 3 Gbps to blame or not - but since both the
chipset and the drive claim to support it _and_ the drive's specs
would warrant 6 Gbps (afaics), I'd really want to give that a try.
running hdparm -t /dev/sda on a new Intel SSD 510 (120GB) gives here:
Timing buffered disk reads: 360 MB in 3.01 seconds = 119.66 MB/sec
The drive has an advertised sequential read performance of "up to 400
MB/s (6Gbps)" and a real-world test (on Anandtech) shows at least
232.1 MB/s of that..
Any suggestions?
prev parent reply other threads:[~2011-04-13 12:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-03 5:04 sata link speed on amd hudson Gottfried Haider
2011-04-03 9:29 ` Borislav Petkov
2011-04-03 11:42 ` Gottfried Haider
2011-04-08 3:38 ` Huang, Shane
2011-04-08 10:18 ` Gottfried Haider
2011-04-12 13:32 ` Huang, Shane
2011-04-13 12:32 ` Gottfried Haider [this message]
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=BANLkTimqoMAUT84se3ZGCTMkn1+ZJWJTWA@mail.gmail.com \
--to=gottfried.haider@gmail.com \
--cc=Borislav.Petkov@amd.com \
--cc=Shane.Huang@amd.com \
--cc=bp@alien8.de \
--cc=linux-ide@vger.kernel.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 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).