Open Stack

All results have been posted for the 2x web head + 2x redis tests (C3). I
also rearranged the wiki page to make it easier to compare the impact of
adding more capacity on the backend.

In C3, The load generator’s CPUs were fully saturated, while there was
still plenty of headroom on the web heads (~60% remaining CPU capacity)
and redis server instances (50% remaining across 2 procs), based on load
average. Therefore, I think this setup could actually handle a lot more
load than I attempted, and that would be a good followup test.

Keeping in mind that I haven’t spent much time tuning the systems and the
Redis driver still has several opportunities for further optimization, I
think these results so far are a pretty good sign we are on the right
track. I was happy to see that all requests were succeeding and I didn’t
find any race conditions during the tests, so kudos to the team for their
careful coding and reviews!

On 9/16/14, 2:43 PM, "Kurt Griffiths" <kurt.griffiths at rackspace.com> wrote:

>Results are now posted for all workloads for 2x web heads and 1x Redis
>proc (Configuration 2). Stats are also available for the write-heavy
>workload with 2x webheads and 2x redis procs (Configuration 3). The latter
>results look promising, and I suspect the setup could easily handle a
>significantly higher load. Multiple load generator boxes would need to be
>used (noted on the etherpad).
>
>On 9/16/14, 10:23 AM, "Kurt Griffiths" <kurt.griffiths at rackspace.com>
>wrote:
>
>>Hi crew, as promised I’ve continued to work through the performance test
>>plan. I’ve started a wiki page for the next batch of tests and results:
>>
>>https://wiki.openstack.org/wiki/Zaqar/Performance/PubSub/Redis
>>
>>I am currently running the same tests again with 2x web heads, and will
>>update the wiki page with them when they finish (it takes a couple hours
>>to run each batch of tests). Then, I plan to add an additional Redis proc
>>and run everything again.
>
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