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@oss1 ~]# cat /proc/fs/lustre/obdfilter/uit-OST0009/exports/192.168.255.161@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.