0 Replies Latest reply: Dec 20, 2011 10:54 AM by 409206 RSS

    slow 2540 disk array

    409206
      I can't get more than 12MB/s of reads out of a 2540.
      The config is 10 500GB disks, 1 is spare, the other 9 in Raid5.
      2 volumes have been created out of the pool, and 0-striped in zfs.

      Here's the output of "iostat -xnpz 2"

      r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
      105.6 4.2 12117.2 8.1 0.0 1.9 0.0 17.0 0 100 c4t600A0B80005A44F5000002B449B0435Ed0
      105.6 4.2 12117.2 8.1 0.0 1.9 0.0 17.0 0 100 c4t600A0B80005A44F5000002B449B0435Ed0s0
      114.0 2.1 13456.1 2.1 0.0 2.1 0.0 17.8 0 100 c4t600A0B80005A44D0000002BA49B04339d0
      114.0 2.1 13456.1 2.1 0.0 2.1 0.0 17.8 0 100 c4t600A0B80005A44D0000002BA49B04339d0s0

      how is this possible???? I expect 10 times that....

      BTW is there any way to see the per-disk performance???