On Jan 07, 2009 11:29 -0800, Curt Wohlgemuth wrote: > Iozone was run with the following command line: > > iozone -t (# threads) -s 2g -r 256k -I -T -i0 -i1 -i2 > > I.e., throughput mode; 2GiB file; 256KiB buffer; O_DIRECT. Tests were > limited to How much RAM is on the test system? If the file size is only 2GB then it will likely fit into RAM, which is possibly why the performance numbers of all the filesystems is so close together. The other possibility is that a single disk is the performance bottleneck and all of the filesystems can feed a single disk at a reasonable rate. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
