VM instances too slow
After deploying openstack using Kolla ansible, the vm instances are too slow I'm using one node as controller and two nodes for compute Nodes have 64GB ram and two intel xeon e5 2660 CPUs.
I don't have a direct answer, but something you should check.
On your compute host with a slow VM, do a process list, find the qemu process for the VM(s) and check the "accel=" setting on the command line. If it is "accel=tcg" you are running your VMs under software emulation and they will be slow. You want to see "accel=kvm" on the qemu processes.
If you have tcg, you need to set up your hosts for kvm. This may include BIOS settings to enable the hardware virtualization features of your processor/platform. Refer to your host operating system documentation for the required steps to enable KVM.
Michael
On Mon, Mar 14, 2022 at 3:18 AM A Monster amonster369@gmail.com wrote:
After deploying openstack using Kolla ansible, the vm instances are too slow I'm using one node as controller and two nodes for compute Nodes have 64GB ram and two intel xeon e5 2660 CPUs.
On 3/14/22 11:11, A Monster wrote:
After deploying openstack using Kolla ansible, the vm instances are too slow I'm using one node as controller and two nodes for compute Nodes have 64GB ram and two intel xeon e5 2660 CPUs.
Hi,
I believe the right answer is: OpenStack has no relationship with the slowness of your VMs. The only thing it does is spawning KVM/Qemu processes, that's all. So if your server is slow, VMs are slow. Are you sure you've enabled KVM though, and that you're not just running with Qemu instead?
Cheers,
Thomas Goirand (zigo)
Slow could mean a lot of things :
- Are you seeing a lot of CPU usage? - Is it disk IO? - Is it RAM usage saturation leading to swap usage? (even if you should not really have a swap for a VM)
On Mon, Mar 14, 2022 at 6:13 AM A Monster amonster369@gmail.com wrote:
After deploying openstack using Kolla ansible, the vm instances are too slow I'm using one node as controller and two nodes for compute Nodes have 64GB ram and two intel xeon e5 2660 CPUs.
participants (4)
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A Monster
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Laurent Dumont
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Michael Johnson
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Thomas Goirand