> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Marcus Wilhelmsson > > I have a problem with my zfs system, it's getting slower and slower > over time. When the OpenSolaris machine is rebooted and just started I > get about 30-35MB/s in read and write but after 4-8 hours I'm down to > maybe 10MB/s and it varies between 4-18MB/s. Now, if i reboot the > machine it's all gone and I have perfect speed again. > > Does it have something to do with the cache? I use a separate SSD as a > cache disk.
If it is somehow related to the cache, fortunately that's easy to test for. Just remove your log device, or cache device, and see if that helps. But I doubt it. > Anyways, here's my setup: > OpenSolaris 1.34 dev > C2D with 4GB ram > 4x 1,5TB WD SATA drives and 1x Corsair 32GB SSD as cache Not knowing much, I'm going to suspect your RAM. 4G doesn't sound like much to me. How large is your filesystem? I think the number of files is probably more relevant than the total number of Gb. > Doesn't seem to matter if I copy files locally on the computer or if I > use CIFS, still getting the same degredation in speed. Last night I > left my workstation copying files to/from the server for about 8 hours > and you could see the performance dropping from about 28MB/s down to > under 10MB/s after a couple of hours. What are you using to measure the performance? Is it read, or write? Do you have compression or dedupe enabled? Please send your /etc/release file. At least the relevant parts. Also, please send your "zpool status" _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
