Bob Friesenhahn <bfrie...@simple.dallas.tx.us> writes: > On Wed, 10 Feb 2010, Frank Cusack wrote: > > The other three commonly mentioned issues are: > > - Disable the naggle algorithm on the windows clients.
for iSCSI? shouldn't be necessary. > - Set the volume block size so that it matches the client filesystem > block size (default is 128K!). default for a zvol is 8 KiB. > - Check for an abnormally slow disk drive using 'iostat -xe'. his problem is "lazy" ZFS, notice how it gathers up data for 15 seconds before flushing the data to disk. tweaking the flush interval down might help. >> An "iostat -xndz 1" readout of the "%b% coloum during a file copy to >> the LUN shows maybe 10-15 seconds of %b at 0 for all disks, then 1-2 >> seconds of 100, and repeats. what are the other values? ie., number of ops and actual amount of data read/written. -- Kjetil T. Homme Redpill Linpro AS - Changing the game _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
