From: Stephen Clark <Stephen.Clark@seclark.us>
To: Sunil Naidu <akula2.shark@gmail.com>
Cc: "Willy Tarreau" <w@1wt.eu>,
"Ismail Dönmez" <ismail@pardus.org.tr>,
linux-kernel@vger.kernel.org
Subject: Re: Abysmal disk performance, how to debug?
Date: Sat, 20 Jan 2007 14:56:20 -0500 [thread overview]
Message-ID: <45B273E4.8040302@seclark.us> (raw)
In-Reply-To: <8355959a0701201144x290362d8ja6cd5bc1408475da@mail.gmail.com>
Sunil Naidu wrote:
>On 1/20/07, Willy Tarreau <w@1wt.eu> wrote:
>
>
>>It is not expected to increase write performance, but it should help
>>you do something else during that time, or also give more responsiveness
>>to Ctrl-C. It is possible that you have fast and slow RAM, or that your
>>video card uses shared memory which slows down some parts of memory
>>which are not used anymore with those parameters.
>>
>>
>
>I did test some SATA drives, am getting these value for 2.6.20-rc5:-
>
>[sukhoi@Typhoon ~]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024
>1024+0 records in
>1024+0 records out
>1073741824 bytes (1.1 GB) copied, 21.0962 seconds, 50.9 MB/s
>
>What can you suggest here w.r.t my RAM & disk?
>
>
>
>>Willy
>>
>>
>
>Thanks,
>
>~Akula2
>-
>To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at http://vger.kernel.org/majordomo-info.html
>Please read the FAQ at http://www.tux.org/lkml/
>
>
>
Hi,
whitebook vbi s96f core 2 duo t5600 2gb hitachi ATA HTS721060G9AT00
using libata
time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 10.0092 seconds, 107 MB/s
real 0m10.196s
user 0m0.004s
sys 0m3.440s
--
"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety." (Ben Franklin)
"The course of history shows that as a government grows, liberty
decreases." (Thomas Jefferson)
next prev parent reply other threads:[~2007-01-20 19:56 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-20 17:20 Abysmal disk performance, how to debug? Ismail Dönmez
2007-01-20 17:45 ` Willy Tarreau
2007-01-20 17:52 ` Ismail Dönmez
2007-01-20 18:03 ` Willy Tarreau
2007-01-20 18:06 ` Ismail Dönmez
2007-01-20 19:44 ` Sunil Naidu
2007-01-20 19:56 ` Stephen Clark [this message]
2007-01-20 20:09 ` Willy Tarreau
2007-01-21 3:41 ` Stephen Clark
2007-01-21 4:06 ` Gene Heskett
2007-01-27 19:43 ` Bill Davidsen
2007-02-03 17:22 ` Elladan
2007-01-20 20:05 ` Willy Tarreau
2007-01-20 20:11 ` Ismail Dönmez
2007-01-20 20:10 ` Tim Schmielau
2007-01-20 20:16 ` Ismail Dönmez
2007-01-20 20:19 ` Willy Tarreau
2007-01-20 20:28 ` Tim Schmielau
2007-01-20 20:31 ` Willy Tarreau
2007-01-20 20:21 ` Tim Schmielau
2007-01-20 20:28 ` Willy Tarreau
2007-01-20 20:39 ` Tim Schmielau
2007-01-20 21:24 ` Willy Tarreau
2007-01-20 21:41 ` Tim Schmielau
2007-01-20 21:12 ` Sunil Naidu
2007-01-20 22:00 ` Tim Schmielau
2007-01-20 23:47 ` Sunil Naidu
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=45B273E4.8040302@seclark.us \
--to=stephen.clark@seclark.us \
--cc=akula2.shark@gmail.com \
--cc=ismail@pardus.org.tr \
--cc=linux-kernel@vger.kernel.org \
--cc=w@1wt.eu \
/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