Re: Ceph MDS daemonperf

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On Tue, May 9, 2017 at 5:23 PM, Webert de Souza Lima
<webert.boss@xxxxxxxxx> wrote:
> Hi,
>
> by issuing `ceph daemonperf mds.x` I see the following columns:
>
> -----mds------ --mds_server-- ---objecter--- -----mds_cache-----
> ---mds_log----
> rlat inos caps|hsr  hcs  hcr |writ read actv|recd recy stry purg|segs evts
> subm|
>   0   95   41 |  0    0    0 |  0    0    0 |  0    0   25    0 |  1  628
> 0
>   0   95   41 |  0    0    0 |  0    0    0 |  0    0   25    0 |  1  628
> 0
>   0   95   41 |  0    0    0 |  0    0    0 |  0    0   25    0 |  1  628
> 0
>   0   95   41 |  0    0    0 |  0    0    0 |  0    0   25    0 |  1  628
> 0
>   0   95   41 |  0    0    0 |  0    0    0 |  0    0   25    0 |  1  628
> 0
>
> It's not clear to me what each column mean, but I can't find it anywhere.
> Also the labels are confusing. Why is there mds and mds_server?

The mds, mds_server etc refer to internal subsystems within the
ceph-mds process (their naming is arcane).

The abbreviated names for performance counters are the "nick" item in
the output of "ceph daemon <xyz> perf schema" -- for sufficiently
recent code you should see a description field there too.

John


> Regards,
>
> Webert Lima
> DevOps Engineer at MAV Tecnologia
> Belo Horizonte - Brasil
>
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