stagnation in the VMs performance isn t as good as other KVM rancher-users #harvester

Title

# harvester

sticky-painter-30848

10/05/2022, 7:07 AM

stagnation in the VMs, performance isn't as good as other KVM installations eg. Proxmox. I am trying to find some tuning documentation but non to find. Any help would be appreciated.

clever-analyst-23771

10/06/2022, 4:30 PM

What is it with performance you are noticing?

sticky-painter-30848

10/07/2022, 6:53 AM

Hi Robert, we are running some relative big servers as a POC with like 16-24 vCPU and 256+ Memory and 512GB+ disk volumes. The installation of the OS goes ok but when it comes to load data into database of the virtual machine everything seems to slow down a whole lot, these loads are handled by Java programs just as a side note.

When we did this in VMware or in Hyper-V we didn't have these issues, and I have seen other KVMs that were running good as well. So I was thinking it could have something to do with the disk images to do, there is nothing to see on the CPU, Memory, Network or the physical discs and I have tried to run vmstat and iostat from within the machines will this issue was seen but not iowaits. I will do some more testing and let you know thank you.

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