Red Hat Bugzilla – Bug 1292474
long response times very long for case when gluster share used inside OSE pod
Last modified: 2016-02-17 19:15:17 EST
Why is this a private BZ?
I suspect this isn't limited to containers - I have seen similar things with VMs.
I think it's important to understand the reason that this is a bz. It's not just that response time is high. Once system's throughput limit is reached, additional concurrent requests will inevitably increase response time. The issue could be FAIRNESS - why are some requests taking way longer than other requests? An unfair system is unusable because response times for some users are unpredictably high. A fairness metric is described here:
Would be interesting to measure fairness metric for this system, and see whether unusually long response times are confined to particular threads, clients or Gluster subvolumes.
Long response time reported by FIO is due to a mistake in post processing script of pbench_fio.
As an example, correct response time is reported here :
but not here:
Once Andrew fixes the issue with postprocess script, this problem will be fixed.
Hence closing this ticket.