Hi all, I notice in ops guide [1], it mentioned that whether to enable hyper-threading depends on use case. I'd like to hear some real world experience on this topic. Do you enable hyper-threading in your openstack cluster? Does it matter at all for your use case? My current use case is java based web app and node.js based web app. Both facing internet users with potentially high concurrency. The cpu on nova-compute node is E5-2620x2, 24 cores with HT on. I also want to know whether there exists some comprehensive and practical benchmark application to test CPU, disk IO, database performance etc on ubuntu platform. Or do I have to fall back to the traditional tools like ab, fio etc. Thanks, Yuanle [1] http://docs.openstack.org/trunk/openstack-ops/content/cpu_choice.html -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20131224/aa812895/attachment.html>