Re: kvm io performance after kernel 3.2/3.3

On Fri, Mar 23, 2012 at 11:43 PM, Michael michael.auckl...@gmail.com wrote: I found after update my kernel from 3.0.25 to 3.2.12 or same with kernel 3.3 Disk performance inside VM reduced by 10x times!!! ( for both kvm 0.12.5 and qemu 1.0.1) It sounds like you are updating the host kernel.

kvm io performance after kernel 3.2/3.3

Hi All, I found after update my kernel from 3.0.25 to 3.2.12 or same with kernel 3.3 Disk performance inside VM reduced by 10x times!!! ( for both kvm 0.12.5 and qemu 1.0.1) For example restore postgresql database in kernel 3.0.25 took only 48sec, while in 3.2.12 or 3.3 more than 9m command to