Hi *,
we're running Openstack on top of Leap 42.1. Since switching to
Mitaka, we're experiencing severe delays when accessing the dashboard
- i.e. switching between "Compute - Overview" and "Compute -
Instances" takes 15+ seconds, even after multiple invocations.
I've had a look at the requests, the Apache logs and our control
node's stats and noticed that it's a single call that's taking all the
time... I see no indications of any error, it seems that once WSGI is
invoked, that call simply takes its time. Intermediate curl requests
are logged, so I see it's doing its work. Looking at "vmstat" I can
see that it's user space taking all the load (Apache / mod_wsgi drives
its CPU to 100%, while other CPUs are idle - and no i/o wait, no
system space etc.).
Current test, switching to "Overview" took 13.09 secs loading
http://control1/project/. Switching back to "Instances" took 14.7 secs
for http://control1/project/instances/. Ain't no fun using the
dashboard that way... and we did not see this with previous releases.
Do others see the same slowness or is it likely some (system or
Openstack) configuration issue on our side?
Just for reference, we're running the following version of Horizon:
--- cut here ---
control1:/etc/apache2/conf.d # rpm -qi
openstack-dashboard-9.0.1~a0~dev12-2.1.noarch
Name : openstack-dashboard
Version : 9.0.1~a0~dev12
Release : 2.1
Architecture: noarch
Install Date: Tue May 10 12:39:04 2016
Group : Development/Languages/Python
Size : 51400386
License : Apache-2.0
Signature : RSA/SHA256, Mon May 9 11:07:15 2016, Key ID 893a90dad85f9316
Source RPM : openstack-dashboard-9.0.1~a0~dev12-2.1.src.rpm
Build Date : Mon May 9 11:06:31 2016
Build Host : build81
Relocations : (not relocatable)
Vendor : obs://build.opensuse.org/Cloud:OpenStack
URL : http://wiki.openstack.org/OpenStackDashboard
--- cut here ---
Regards,
Jens
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