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Re: Checkpoint_segments optimal value

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On 7/21/2014 1:51 PM, Kevin Grittner wrote:
The above might help, but I think the biggest problem may be your
VM.  You show very low disk I/O numbers, but a pretty significant
fraction of the time waiting for I/O.  The previously-suggested
iostat output may help nail it down more specifically, but
basically you seem to have a big problem with bandwidth for storage
access.  It's pretty disturbing to see lines in vmstat output which
show zero disk in or out, but over 10% of CPU time waiting for
storage?!?

that would suggest to me a large number of VMs sharing a single SATA drive, or similar.



--
john r pierce                                      37N 122W
somewhere on the middle of the left coast




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