[Lustre-discuss] Interpreting stats files

[Sreedhar]

Hi,

We use lltop for this.

https://github.com/jhammond/lltop

I believe this tool does exactly what you're planning.

If you already know this please ignore this message.

Sreedhar.
New York University.

On Fri, Nov 7, 2014 at 3:29 PM, Dragseth Roy Einar <roy.dragseth at uit.no>
wrote:

> Is there a description of the stats file formats anywhere?
>
> I'm especially interested in the
>
> /proc/fs/lustre/obdfilter/*/exports/*/stats
>
> files.  For instance, what does the last three numbers on the read_bytes
> or write_bytes lines mean?
>
> [root at oss1 ~]# cat
> /proc/fs/lustre/obdfilter/uit-OST0009/exports/192.168.255.161 at o2ib/stats
> snapshot_time             1415391739.442581 secs.usecs
> read_bytes                365486 samples [bytes] 2720 1048576 363509372808
> write_bytes               12183 samples [bytes] 7384 1048576 12762602232
> preprw                    377677 samples [reqs]
> commitrw                  377669 samples [reqs]
> ping                      832 samples [reqs]
>
> (I'm trying to create a simple tool to scan all OSSes and detect the worst
> IO hogs on our system)
>
> Regards,
> Roy.
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>
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