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.
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]
on 2019/9/2 15:43, å´?æ??é¦? 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.
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