> We had a situation where write speeds to a ZFS > consisting of 2 7TB RAID5 LUNs came to a crawl.
Sounds like you've hit Bug# 6596237 "Stop looking and start ganging". We ran into the same problem on our X4500 Thumpers. Write throughput dropped to 200 KB/s. We now keep utilization under 90% to help combat the problem till a patch is available. It seems to be worse if you have millions of files within the zpool. We had over 25M files in a 16TB zpool. At 95% full, it was virtually unusable for writing files. This was on a host running vanilla S10U4 x86. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
