Hi Travist, The following 2 kernel parameters can be adjusted if resilvering speed is too slow/fast:
zfs_resilver_delay /* number of ticks to delay resilver */ zfs_resilver_min_time_ms /* min millisecs to resilver per txg */ faster: echo zfs_resilver_delay/W0|mdb -kw echo zfs_resilver_min_time_ms/W0t3000|mdb -kw slower: echo zfs_resilver_delay/W2|mdb -kw echo zfs_resilver_min_time_ms/W0t300|mdb -kw Disclaimer: Use at your own risk. I have not used them extensively enough to make recommendations and I would do due diligence before modifying them in a production setting. I would recommend testing the network and disks in a isolated fashion to verify each point is working as expected. Some posts to help: http://eonstorage.blogspot.com/2010/12/benchmarking-eon-zfs-nas-performance.html dladm show-link bge0 -s -i 1 http://eonstorage.blogspot.com/2010/03/whats-best-pool-to-build-with-3-or-4.html There is also a diskspeed program included in EON to give a rough idea of individual disk read performance (test each of them). Remember your pool is limited by it's slowest member in a RAID Z. Also, there are many factors that contribute like, workload, IOPS per disk and more. 14MB/s does seem on the low side but is that a sync or async workload etc. What you are asking has no silver bullet answer. You have thoroughly work through the specs of the hardware/software combo and see if you can isolate the problem point, if there is one or what may be causing the issue. I would start by listing the hardware specs and disk specs? Use the included tools zpool iostat, dladm to verify what's happening, etc Hope that helps -- This message posted from opensolaris.org _______________________________________________ distribution-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/distribution-discuss
