Hi, 2011/12/19 Hung-Sheng Tsao (laoTsao) <laot...@gmail.com>: > what is the ram size?
32 GB > are there many snap? create then delete? Currently, there are 36 snapshots on the pool - it is part of a fairly normal backup regime of snapshots every 5 min, hour, day, week and month. > did you run a scrub? Yes, as part of the previous drive failure. Nothing reported there. Now, interestingly - I deleted two of the oldest snapshots yesterday, and guess what - the performance went back to normal for a while. Now it is severely dropping again - after a good while on 1.5-2GB/s I am again seeing write performance in the 1-10MB/s range. Is there an upper limit on the number of snapshots on a ZFS pool? Best regards Jan _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
