On Nov 21, 2007, at 4:30 PM, Andreas Dilger wrote: > On Nov 19, 2007 13:25 -0600, Robert Olson wrote: >> OK, early indications are good here. Started out with MDT on PPC >> with OST >> on intel, ran iozone up to 1M files and it finished without error >> and with >> reasonable performance. > > Can you please run "e2fsck -fn" (from a Lustre-patched e2fsprogs) > on the > filesystems after your tests.
What will that tell me? > > The extents,mballoc options are primarily aimed at improving the > performance > under high load by reducing CPU usage and getting better > allocation. if > you have mostly small files then the performance difference won't > be huge. is this one of the changes that improves write performance? I've notice write performance lagging reads. I've got the system running with a 7 OSTs, and getting near-wire-rate reads from wide stripes to a single node with large files according to iozone. --bob _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
