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  1. XenServer Org
  2. XSO-519

Performancegraph Storage-IO shown incorrectly in XenCenter

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    Details

    • Type: Bug
    • Status: Done (View Workflow)
    • Priority: Minor
    • Resolution: Done
    • Affects Version/s: 6.5 SP1, 7.0
    • Fix Version/s: None
    • Component/s: XenCenter
    • Labels:
      None
    • Environment:

      XenCenter 6.6.92.3579 64 Bit (Creedence, TP3) - same as with original and versions between

      Description

      If you can see:

      It totally shows nonsense and jumps between 0 and 1 mio IOPS.
      If I monitor storage via iostat, it shows values between 0 and - if sequential IO happens, maybe up to 2 - 4.000, but usually it stucks at about 800 IOPS.

      I don't have a clue why XenCenter shows that nonsense, but it's already for a while like that, probably XAPI is delivering some weird data or there is a timing problem at data collection.

      Seems to work on Creedence TP3 again, but there is only an S-ATA HDD connected, where on the problematic server are 2 RAID-Controllers with cache attached.
      I thought that to be a problem, cuz the onboard cache will do high IOPS, but then iostat should show the same results - and it doesn't.

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              Assignee:
              stephentu Stephen Turner
              Reporter:
              cgiesers Christof Giesers
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                Dates

                Created:
                Updated:
                Resolved: