Thanks Dan!
Thanks,
Mike Dawson
On 4/17/2014 4:06 AM, Dan van der Ster wrote:
Mike Dawson wrote:
Dan,
Could you describe how you harvested and analyzed this data? Even
better, could you share the code?
Cheers,
Mike
First enable debug_filestore=10, then you'll see logs like this:
2014-04-17 09:40:34.466749 7fb39df16700 10
filestore(/var/lib/ceph/osd/osd.0) write
4.206_head/57186206/rbd_data.1f7ccd36575a0ed.0000000000001620/head//4
651264~4096 = 4096
and this for reads:
2014-04-17 09:46:10.449577 7fb392427700 10
filestore(/var/lib/ceph/osd/osd.0) FileStore::read
4.fe9_head/f7281fe9/rbd_data.10bb48f705289c0.0000000000006a24/head//4
1994752~4096/4096
The last num is the size of the write/read.
Then run this:
https://github.com/cernceph/ceph-scripts/blob/master/tools/rbd-io-stats.pl
Cheers, Dan
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