Re: Low RBD Performance

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>> Ultimately this seems to be an FIO issue.  If I use "--iodepth X" or "--
>iodepth=X" on the FIO command line I always get queue depth 1.  After
>switching to specifying "iodepth=X" in the body of the FIO workload file I do
>get the desired queue depth and I can immediately see performance is much
>higher (a full re-test is underway, I can share some results when complete if
>anyone is curious).  This seems to have effectively worked around the
>problem, although I'm still curious why the command line parameters don't
>have the desired effect.  Thanks for the responses!
>>
>
>Strange!  I do most of our testing using the command line parameters as well.
>What version of fio are you using?  Maybe there is a bug.  For what it's worth,
>I'm using --iodepth=X, and fio version 1.59 from the Ubuntu precise
>repository.
>
>Mark

FIO --version reports 2.0.8.  Installed on Ubuntu 13.04 from the default repositories (just did an 'apt-get install fio').

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