Hi, When we did our testing a few months ago we saw the same thing with the degradation of the performance. Keystone was a notable bottleneck. Thanks Gary ________________________________ From: Wesley Peng <weslepeng at gmail.com> Sent: Monday, September 2, 2019 10:58 AM To: openstack-discuss at lists.openstack.org <openstack-discuss at lists.openstack.org> Subject: Re: [QA][nova][Concurrent performance] Hi on 2019/9/2 15:43, 崔恒香 wrote: > Why the performance of Stein concurrent creation of VM is not as good as > that of Ocata? > Create 250 VMs concurrently, the O version only needs 160s, but the S > version needs 250s. Openstack's execution environment is complicated. It's hard to say O is faster than S from the architecture viewpoint. Are you sure two systems' running environment are totally the same for comparision? including the software, hardware, network connection etc. regards. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20190902/3cd8be6e/attachment.html>