On Jul 4, 2009, at 03:48, Phil Harman wrote:
The other thing that slows you down is that ZFS only flushes to disk every 5 seconds if there are no synchronous writes. It would be interesting to see iostat -xnz 1 while you are running your tests. You may find the disks are writing very efficiently for one second in every five.
The value of 5 seconds is no longer a hard stop since SNV 87. Since snv_87 (and S10u6) it can be up to 30 seconds (but it does shoot for 5 seconds):
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6429205 See the 20-Mar-2008 change for txg.c for details. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
