[Bug 919429] Re: Munin "IO Service Time" graph gives completely implausible numbers

[Tel]

Here is the graph of the latency, also from munin. Showing the exact
opposite to the other graph. This one gives an answer that I believe is
correct (or at least it is plausible). Note that /dev/sdc is the fastest
drive, and shows the lowest latency. Also note that when loaded heavily,
the latency on /dev/sda and /dev/sdb go up (they are RAID mirror so they
move together).


** Attachment added: "Disk latency per device - by week"
   https://bugs.launchpad.net/ubuntu/+source/munin/+bug/919429/+attachment/2684669/+files/diskstats_latency-week.png

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Title:
  Munin "IO Service Time" graph gives completely implausible numbers

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