Re: [zfs-discuss] ZFS Send Priority and Performance

2009-11-20 Thread Adam Serediuk
I've done some work on such things. The difficulty in design is figuring out how often to do the send. You will want to balance your send time interval with the write rate such that the send data is likely to be in the ARC. There is no magic formula, but empirically you can discover a reaso

Re: [zfs-discuss] ZFS Send Priority and Performance

2009-11-20 Thread Richard Elling
On Nov 20, 2009, at 11:27 AM, Adam Serediuk wrote: I have several X4540 Thor systems with one large zpool that replicate data to a backup host via zfs send/recv. The process works quite well when there is little to no usage on the source systems. However when the source systems are under us