On Tue, Jul 9, 2013 at 2:40 PM, Snider, Tim <span dir="ltr"><<a href="mailto:Tim.Snider@netapp.com" target="_blank">Tim.Snider@netapp.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p class="MsoNormal">I have 2 openstack clusters running the Folsom release with multiple Swift nodes. I also have a small setup that is running only Swift with a single node. I’m noticing very large Swift I/O latencies (seconds long) on the openstack clusters
– ssbench output snippet is below. Performance is approximately identical on the openstack clusters. The Swift only cluster performs much better.
<u></u><u></u></p></blockquote></div><br>Keystone performance can be pretty awful unless you are using something else than the default WSGI container configuration (single process eventlet I think). I would suggest you try to run it under apache with multiple process.<br>
<br>See the dicussion at last summit about Keystone performance here :<br><br><a href="https://etherpad.openstack.org/havana-keystone-performance">https://etherpad.openstack.org/havana-keystone-performance</a><br><br>Chmouel.<br>
<br>