I also found these ClustreFS performance results in the archives. Can you provide details on the host configuration (processor, OS, storage connection) that was used in these tests? Thx, Tim
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jody McIntyre Sent: Friday, December 29, 2006 4:10 PM To: [email protected] Cc: [EMAIL PROTECTED] Subject: [Lustre-devel] Re: sgpdd-survey of Sun Thumper On Thu, Dec 14, 2006 at 04:34:06PM -0500, Jody McIntyre wrote: > My next plan is to test obdfilter-survey with various chunk and > request sizes. Assuming 4MB IOs are preserved intact all the way to > the MD layer, I expect similar results. I will then test even smaller > chunk sizes with both sgpdd-survey and obdfilter-survey. The obdfilter-surveys are still in progress, but attached is a revised sgpdd-survey spreadsheet. As you can see, the 64K chunk size is worse, sometimes significantly, than the 128K chunk size except for writes of size 1M (which are slightly better with the 64K chunk size.) Therefore 128K chunk size is basically the sweet spot for a RAID 5 array with 5 active devices on Thumper hardware. Cheers, Jody _______________________________________________ Lustre-devel mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-devel
