Hello > Yah, the incrementals are from a 30TB volume, with about 1TB used. > Watching iostat on each side during the incremental sends, the sender > side is hardly doing anything, maybe 50iops read, and that could be > from other machines accessing it, really light load. > The receiving side however, for about 3 minutes it is peaking around > 1500 iops reads, and no writes.
Have you tries truss on both sides? From my experiments I found that sending side on beginning of the transfer mostly sleeps while receiving lists all available snapshots on the syncing file system. So if you have a lot of snapshots on receiving side (as in my case) the process will take long time sending no data but listing the snapshots. The worst case is if you use recursive sync of hundreds of file system with hundreds of snapshots on each. I'm sure this must be optimized somehow otherwise it's almost useless in practice. Regards Mike _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
