What were you trying to do that didn't work?

Performance Degradation between qemu 9.0.0-6.el9 and 8.2.0-11.el9_4.4, expecailly for write/randwrite with 4k block size, and randread with 64k block size + 1 iodepth + 16 iothreads

Please provide the package NVR for which bug is seen:

qemu-kvm-core-9.0.0-6.el9.x86_64

kernel-5.14.0-427.24.1.el9_4.x86_64

How reproducible:

100%

Steps to reproduce

Regression test of fio between qemu 9.0.0-6.el9 and 8.2.0-11.el9_4.4.

Expected results

No performance degradation or performance improved, but not degradation

Actual results

Performance degradated, and check http://kvm-perf.hosts.qa.psi.pek2.redhat.com/results/regression/9.5.0_qemu9.0.0-6_kernel5.14.0-427.24.1/nvme/raw.virtio_blk.*.x86_64.html for detailed info please.