Andreas and Oleg, Sorry to bother you again.
Is there any way to "force" an RPC page size of 256kb and pack several 4kb random operations into a 256k page so the final throughput can increase? Thanks Jeffrey A. Bennett HPC Systems Engineer San Diego Supercomputer Center http://users.sdsc.edu/~jab -----Original Message----- From: andreas.dil...@sun.com [mailto:andreas.dil...@sun.com] On Behalf Of Andreas Dilger Sent: Friday, March 05, 2010 2:05 AM To: Jeffrey Bennett Cc: oleg.dro...@sun.com; lustre-discuss@lists.lustre.org Subject: Re: [Lustre-discuss] One or two OSS, no difference? On 2010-03-04, at 14:18, Jeffrey Bennett wrote: > I just noticed the sequential performance is ok, but the random IO > (which is what I am measuring) is not. Is there any way to increase > random IO performance on Lustre? We have LUNs that can provide > around 250.000 random read 4kb IOPS but we are only seeing 3.000 to > 10.000 on Lustre. There is work currently underway to improve the SMP scaling performance for the RPC handling layer in Lustre. Currently that limits the delivered RPC rate to 10-15k/sec or so. _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
