|To:||Nathan Scott <nathans@xxxxxxx>|
|Subject:||Re: tuning for large files in xfs|
|Date:||Thu, 25 May 2006 12:15:33 -0700|
|References:||<447209A8.email@example.com> <20060523085116.B239136@wobbly.melbourne.sgi.com> <44725C27.firstname.lastname@example.org> <20060523115938.A242207@wobbly.melbourne.sgi.com> <4473B9D0.email@example.com> <20060524122350.J270972@wobbly.melbourne.sgi.com>|
|User-agent:||Mozilla Thunderbird 0.9 (X11/20041124)|
here are the results:
under 2.6.8 kernel with agsize=2g (440 some AGs): 6.9ms avg access
under 2.6.8 kernel with agcount=32: 6.2ms
under 2.6.17 kernel with partition made in 2.6.8 with agcount=32: 6.2ms
under 2.6.17 kernel just reading from /dev/sdb1: 6.2ms
under 2.6.17 kernel with new partition (made under 2.6.17) with agcount=32, file created via the xfs_io reserve call: 6.9 ms
under 2.6.17 kernel just reading from /dev/sdb1: 6.9ms (not sure why this changed from 6.2 the day before)...
So it seems like going to 32 AGs helped about 10%, but other then that not much else is making much of a difference... now I am moving on and trying to break the RAID up and testing individual disks to see their performance...
Nathan Scott wrote:
On Tue, May 23, 2006 at 06:41:36PM -0700, fitzboy wrote:
iParadigms, LLC 1624 Franklin St., 7th Floor Oakland, CA 94612
p. +1-510-287-9720 x233 f. +1-510-444-1952 e. fitzboy@xxxxxxxxxxxxxx
The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by replying to the message and deleting it from your computer.
|<Prev in Thread]||Current Thread||[Next in Thread>|
|Previous by Date:||RE: TAKE 952214 - log recovery compat on 32/64 bit, Mike Gigante|
|Next by Date:||PARTIAL TAKE 953263 - unlinked list qa test, Timothy Shimmin|
|Previous by Thread:||Re: tuning for large files in xfs, Nathan Scott|
|Next by Thread:||TAKE 953212 - fsr vs dir arguments, Nathan Scott|
|Indexes:||[Date] [Thread] [Top] [All Lists]|