Ask Your Question

Identifying cause of VM slowness

asked 2015-11-12 19:00:57 -0600

ethode gravatar image

We had an openStack implementation using the vanilla packages then we decided to utilize Mirantis instead which fits our corporate environment better and need for support once in a while.

After spinning up VM's on our environment after reconfiguring with Mirantis OpenStack all of the Vm's are EXTREMELY slow. I've made sure to adjust the MTU since we're using GRE for networking but it doesn't matter if we used attached storage or local host storage, it's painfully slow.

Everything is the same in this setup aside from the use of Mirantis packages. Anyone seen this before? Have any suggestions?

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted

answered 2015-11-23 10:41:18 -0600

Have you tried disabling the TCP segmentation offload?

Example: ethtool -K ethX tso off

edit flag offensive delete link more

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower


Asked: 2015-11-12 19:00:57 -0600

Seen: 77 times

Last updated: Nov 12 '15