"samples" is the number of times this event was measured, and it happens that
these request stats are all measured together. The values to the right of the
units are min/max/sum/[sumsq] in units of microseconds, or seconds, or
requests. To work out the average request waittime is:
(sum / samples) = 1257652419050 / 611801704 = 2055usec
Cheers, Andreas
--
Andreas Dilger
Lustre Principal Architect
Intel High Performance Data Division
On 2016/09/16, 10:45, "Mahmoud Hanafi" <[email protected]> wrote:
Why is 'samples' the same for req_waittime, req_qepth, req_active,
req_timeout all the same.
req_waittime 611801704 samples [usec] 3 5061774
1257652419050 953071357361477866
req_qdepth 611801704 samples [reqs] 0 89 21110263 22332201
req_active 611801704 samples [reqs] 1 127 2647563677
122463789917
req_timeout 611801704 samples [sec] 150 150 91770255600
13765538340000
reqbuf_avail 1256133286 samples [bufs] 481 574 705260598158
396165104527476
....
shouldn't the samples for [usec] be total usec similar to units of
[bytes]. For example:
cat /proc/fs/lustre/obdfilter/nbp8-OST00d1/stats
snapshot_time 1474043858.153583 secs.usecs
read_bytes 21704638 samples [bytes] 4096 1048576
12917847764992
write_bytes 25971348 samples [bytes] 1 1048576 19719890405713
....
Samples here is total bytes transferred correct?
--
Mahmoud Hanafi
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