Anton B. Rang wrote: >> Create a pool [ ... ] >> Write a 100GB file to the filesystem [ ... ] >> Run I/O against that file, doing 100% random writes with an 8K block size. >> > > Did you set the record size of the filesystem to 8K? > > If not, each 8K write will first read 128K, then write 128K. >
Also check to see that your 8kByte random writes are aligned on 8kByte boundaries, otherwise you'll be doing a read-modify-write. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
