[Ci-users] RDO jobs in cico

Mon Aug 8 15:08:23 UTC 2016
David Moreau Simard <dms at redhat.com>

Using the new slaves has a couple objectives:
1) Test the new OpenStack cloud
2) Increase redundancy (given the instability of our existing slave
the past few weeks)
3) Increase concurrency/capacity

We had 16 threads on a single slave before (down from 24) and that
single slave was struggling to cope when all those 16 threads were
actually busy.
The new slaves have 8 threads each and we lowered the amount of
threads on the original slave back to 10 so it isn't loaded (and isn't
crashing) as much.

So we're now at 34 threads total and I can indeed tell from our
consumption logging that the usage has increased and peaks higher than
We'll scale down the threads to 24 total, can you tell us if you see
improvements ?

We're also waiting for the feature in Duffy that'll enable us to track
which node is associated with which job so we can hunt jobs that are
potentially not being very good citizens.

David Moreau Simard
Senior Software Engineer | Openstack RDO

dmsimard = [irc, github, twitter]

On Mon, Aug 8, 2016 at 9:30 AM, Karanbir Singh <mail-lists at karan.org> wrote:
> hi guys,
> with an increase in the number of slaves, we've noticed that the rdo
> jobs are deploying machines at a much higher velocity than before - as a
> result the ready pool is consistently hitting the low water mark.
> Rather than do an overall quota limit, I'm looking at limiting the
> number of duffy deploy's per 10 min cycle, but rather than propose
> something I'd like to see what folks think is a reasonable number to
> start from ?
> regards,
> --
> Karanbir Singh
> +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
> GnuPG Key : http://www.karan.org/publickey.asc
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