Re: progress on fio --client

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On 09/13/2016 04:43 PM, Ben England wrote:
Am now running with Jens patch "ignore SEND_ETA, if we can't fin a
reply command ".   Thanks!  I was trying to solve it by increasing
timeout.

I did the last commit on PR 241 to address the remaining comment.  If
it looks ok to you, I would appreciate this being pulled in because it
is important to distributed fio --client testing in order to get
bandwidth/iops logs and latency histogram logs.    I have been testing
it for about a week now with 900 workload generator threads across 7
hosts and it seems to work, especially now that assertion isn't firing
because of above patch.

Glad that works!

An unrelated minor problem - There are still a couple of threads that
have trouble returning a fio histogram to the test driver, will look
into that, but at least fio --client is getting almost all the logs now
with PR 241, enough that meaningful stats can be generated.  Error
messages are:

fio: failed decompressing log
fio: failed converting IO log

This doesn't happen for smaller numbers of workload generator threads.

That usually points to a bug in the compression or decompression
handling, so I'd probably look at that. We've had that in a few other
areas, you might want to look at the changelog and see the fixes for
those.

--
Jens Axboe

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