On Jan 23, 2008 6:36 AM, Manoj Nayak <[EMAIL PROTECTED]> wrote: > It means 4-disk raid-z group inside ZFS pool is exported to ZFS as a > single device ( vdev ) .ZFS assigns vq_max_pending value of 35 to this vdev. > To get higher throughput , I need to do following things ? > > 1.Reduce no of disks in the raidz group from four to three disk.So that > same pending queue of 35 is available for lesser no of disk. > 0r > 2.Create slice out of physical disk & create raidz group out of four > slices of a physical disk.So that same pending queue of 35 is available > four slices of one physical disk. Or switch to mirrors instead, if you can live with the capacity hit. Mirrors will have much better random read performance than raidz, since they don't need to read from every disk to make sure the checksum matches.
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