> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > > --- How how will improving ZIL latency improve performance of my pool that > is used as a NFS share to ESXi hosts which forces sync writes only (i.e will > it be > noticeable in an end-to-end context)?
Just perform a bunch of writes, time it. Then set sync=disabled, perform the same set of writes, time it. Then enable sync, add a ZIL device, time it. The third option will be somewhere in between the first two. Ideally, with a dedicated ZIL device, you come very close to the performance with sync disabled. (But that's not realistic.) The only question is how to create a bunch of sync IO, which emulates your actual usage. If you were running a DB, then you would hammer your DB. Since you're running a NFS server, hopefully you can make a bunch of NFS clients hammer the server. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
