[Lustre-discuss] Interpreting stats files

Dragseth Roy Einar roy.dragseth at uit.no
Fri Nov 7 12:29:41 PST 2014

Is there a description of the stats file formats anywhere?

I'm especially interested in the


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/ 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)


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