On Thu, Aug 24, 2023 at 12:29:43PM +0200, Jan Wasilewski wrote: > Ultimately, I discovered that the performance is significantly > enhanced when the hypervisor is deployed on top of Ubuntu > 22.04LTS. Under this setup, I was able to achieve around 100,000 > IOPS during my fio tests [1][2]. In contrast, conducting a similar > test with the hypervisor deployed on Ubuntu 20.04LTS yielded > significantly lower results, averaging around 20,000 IOPS [3][4].
That's quite a difference. How are you storing the virtual disks? Is it qcow2 files? How are they created (i.e. what options are you using?), what runtime options -if any- are you using with them (e.g. l2-cache-size)? Did you try to build QEMU 6.2 in Ubuntu 20.04 and see what happens with the IOPS? Berto
