The Wonders of NUMA, or Why Your High-Performance Application Doesnt Perform

You select the best possible hardware for the job, you optimize the host OS to deliver the best performance ever seen by mankind, and you tweak your high-performance vSwitch to ensure nothing, nothing, could possibly stop you now. You rub your bloodshot eyes, run 'openstack server create' and, well, things don't look so rosy.Welcome to the world of OpenStack on NUMA-based architectures, where one poor scheduling decision can result in drastic performance reductions. Thankfully, OpenStack realize

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