Re: Benchmark individual OSD's

[Gregory Farnum <gfarnum@xxxxxxxxxx>]

You can also extend that command line to specify specific block and total sizes. Check the help text. :)

-Greg

On Thursday, October 29, 2015, Lindsay Mathieson <lindsay.mathieson@xxxxxxxxx> wrote:

On 29 October 2015 at 19:24, Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

# ceph tell osd.1 bench
{
    "bytes_written": 1073741824,
    "blocksize": 4194304,
    "bytes_per_sec": 117403227.000000
}

It might help you to figure out whether individual OSDs do not perform as expected. The amount of data written is limited (but there's a config setting for it). With 1 GB as in the example above, the write operation will probably be limited to the journal.

Thats perfect, thanks Burkhard, it lets me compare osd's and configurations.

--

Lindsay

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