Hi Guys,
About a month ago we were going through the process of trying to figure
out how to replace some of the hardware in the community laboratory that
runs all of the nightly Teuthology tests. Given a limited budget to
replace the existing nodes, we wanted to understand how the current QA
suites actually spend time on the hardware. To do this, we investigated
the composition of suites, the amount of time that is spent in each
suite, and then a deeper dive into how the most resource intensive jobs
spend their time. We then wrote a new benchmark for CBT to run
ceph-test-rados in a rather naive reproduction of what the ceph task in
teuthology does and tested it against several different storage device
configurations to see how much benefit SSDs in the nodes may provide.
A couple of folks at the Hackathon were interested in the paper we
wrote. I thought I would share it with the community as well in case
any folks ever wondered what Teuthology actually spends it's time doing.
http://nhm.ceph.com/community/Ceph_Community_Lab_Performance_Investigation.pdf
Thanks,
Mark
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