XenServer – Fix 100% CPU and Memory Usage Issue

cpu-usagegrub2memory usageUbuntuxenserver

I had this problem today after a power failure.

I had 2 vms and one of them won't boot and was using 100% of CPU and 100% of memory.

Since it was very dificult to solve (at least for me) I want to detail here the steps I've made to fix it, mixing many tutorials.

Best Answer

I had this problem too. This helped me:

It could be possible that the problem was GRUB not sending signal video.

I've seen many threads regarding this, and it is highly probable that my VM's were stuck at this GRUB screen where you MUST select the OS to boot (giving the fact that they booted by pressing enter).

https://askubuntu.com/questions/372164/how-to-load-ubuntu-server-automatically-in-grub

Because this happened to me after power failures also, in a non-virtualized pc.

Just clicked in the blank area, hit enter, and it started booting.

Related Topic