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2e8e18c2e4
Allow virtio-scsi virtqueues to be assigned to different IOThreads. This makes it possible to take advantage of host multi-queue block layer scalability by assigning virtqueues that have affinity with vCPUs to different IOThreads that have affinity with host CPUs. The same feature was introduced for virtio-blk in the past: https://developers.redhat.com/articles/2024/09/05/scaling-virtio-blk-disk-io-iothread-virtqueue-mapping Here are fio randread 4k iodepth=64 results from a 4 vCPU guest with an Intel P4800X SSD: iothreads IOPS ------------------------------ 1 189576 2 312698 4 346744 Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20250311132616.1049687-12-stefanha@redhat.com> Tested-by: Peter Krempa <pkrempa@redhat.com> [kwolf: Updated 051 output, virtio-scsi can now use any iothread] Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> |
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| avocado | ||
| bench | ||
| data | ||
| decode | ||
| docker | ||
| fp | ||
| functional | ||
| guest-debug | ||
| image-fuzzer | ||
| include | ||
| keys | ||
| lcitool | ||
| migration-stress | ||
| multiboot | ||
| perf/block/qcow2 | ||
| qapi-schema | ||
| qemu-iotests | ||
| qtest | ||
| rocker | ||
| tcg | ||
| tsan | ||
| uefi-test-tools | ||
| unit | ||
| vm | ||
| vmstate-static-checker-data | ||
| dbus-vmstate-daemon.sh | ||
| Makefile.include | ||
| meson.build | ||
| test-qht-par.c | ||
| vhost-user-bridge.c | ||