Good Evening, N.B. - Previously posted to osol-discuss list, but think this may be a better place, apologies for dual posting.
I have a small Atom based NAS, running build 134, using a Silicon Image 3124 controller and a raidz zpool with 5 disks - not using anything funky like dedup, compression etc - however i seem to be seeing this bug: http://bugs.opensolaris.org/bugdatabase/view_bug.do;jsessionid=622a4828714cd0382000b9764e83?bug_id=6796802 And i found this previous post that is exactly what im seeing: http://www.archivum.info/zfs-disc...@opensolaris.org/2008-10/00203/Re:-[zfs-discuss]-Troubleshooting-ZFS-performance-with-SIL3124-cards.html I know there are a fair few bugs reported on the bugdb, but does any one have any experience with this card? Or any ideas for how i might work to mitigate it? Im not looking for blistering performance but the blocking can cause a stuttering when streaming media from the NAS - this doesnt pose an issue most of the time, as most of the I/O is pretty light generally speaking. But can be annoying none the less. Example from iostat, whilst performing a simple 'par' in an archive - whilst this shows 2 disks at 100% %w, it can be as few as 1, or as many as 3-4: cpu us sy wt id 20 12 0 68 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 32.9 56.8 1085.1 6107.6 0.3 0.2 3.3 1.8 7 10 c0d0 22.9 98.7 765.9 6011.8 0.1 0.1 0.6 1.2 3 10 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 25.9 17.0 829.7 1735.3 0.6 0.1 14.1 2.8 9 12 c3t1d0 27.9 18.0 925.5 1703.4 0.6 0.1 13.5 2.9 10 13 c3t2d0 20.9 19.9 765.9 1898.8 0.7 0.2 16.4 4.2 12 17 c3t3d0 cpu us sy wt id 3 27 0 70 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 2.0 287.8 64.2 23927.6 0.3 0.3 1.2 1.1 12 18 c0d0 2.0 268.8 64.2 24024.2 0.5 0.3 1.7 1.3 14 19 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 0.0 25.1 0.0 3100.7 9.6 0.2 381.2 6.0 100 15 c3t1d0 0.0 23.1 0.0 2844.0 9.6 0.1 417.1 6.3 100 14 c3t2d0 1.0 229.6 64.2 28160.5 4.3 0.5 18.5 2.3 53 52 c3t3d0 cpu us sy wt id 0 1 0 99 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t1d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t2d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t3d0 cpu us sy wt id 0 0 0 100 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t1d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t2d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t3d0 cpu us sy wt id 0 1 0 99 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t1d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t2d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t3d0 cpu us sy wt id 1 1 0 98 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t1d0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 100 0 c3t2d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t3d0 cpu us sy wt id 1 6 0 93 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 1.0 19.0 64.0 63.5 0.0 0.0 0.1 1.1 0 2 c0d0 1.0 17.0 64.0 63.0 0.0 0.0 0.2 1.1 0 2 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 1.0 222.0 64.0 25216.9 8.4 0.8 37.5 3.7 95 81 c3t1d0 1.0 225.0 64.0 25504.9 8.4 0.8 36.9 3.6 93 81 c3t2d0 0.0 17.0 0.0 63.0 0.0 0.0 0.4 1.8 0 3 c3t3d0 cpu us sy wt id 21 4 0 75 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 38.0 77.0 1216.1 274.0 0.2 0.1 1.7 1.2 4 8 c0d0 37.0 57.0 1216.1 274.0 0.2 0.1 2.6 1.1 4 7 c4d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c3t0d0 21.0 66.0 672.0 274.0 0.2 0.1 2.6 0.9 3 8 c3t1d0 16.0 60.0 544.0 274.0 0.3 0.1 3.4 1.5 6 11 c3t2d0 39.0 59.0 1280.1 274.0 0.2 0.1 2.3 0.9 6 9 c3t3d0 Thanks, -- iMx i...@streamvia.net www.slashdevslashnull.com _______________________________________________ storage-discuss mailing list storage-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/storage-discuss
