Stefan Hajnoczi 9445e1e15e virtio-blk-pci: default num_queues to -smp N ... Automatically size the number of virtio-blk-pci request virtqueues to match the number of vCPUs. Other transports continue to default to 1 request virtqueue. A 1:1 virtqueue:vCPU mapping ensures that completion interrupts are handled on the same vCPU that submitted the request. No IPI is necessary to complete an I/O request and performance is improved. The maximum number of MSI-X vectors and virtqueues limit are respected. Performance improves from 78k to 104k IOPS on a 32 vCPU guest with 101 virtio-blk-pci devices (ioengine=libaio, iodepth=1, bs=4k, rw=randread with NVMe storage). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Message-Id: <20200818143348.310613-7-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2020-08-27 08:29:13 -04:00
..
Kconfig	virtio-mem: Paravirtualized memory hot(un)plug	2020-07-03 07:57:04 -04:00
meson.build	meson: convert hw/virtio	2020-08-21 06:30:26 -04:00
trace-events	virtio,acpi: features, fixes, cleanups.	2020-07-07 17:37:44 +01:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00
vhost-backend.c	vhost-vdpa: introduce vhost-vdpa backend	2020-07-07 07:59:51 -04:00
vhost-scsi-pci.c	virtio-scsi-pci: default num_queues to -smp N	2020-08-27 08:29:13 -04:00
vhost-stub.c
vhost-user-blk-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
vhost-user-fs-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
vhost-user-fs.c	qdev: Unrealize must not fail	2020-05-15 07:08:14 +02:00
vhost-user-input-pci.c	qom: Drop parameter @errp of object_property_add() & friends	2020-05-15 07:07:58 +02:00
vhost-user-scsi-pci.c	virtio-scsi-pci: default num_queues to -smp N	2020-08-27 08:29:13 -04:00
vhost-user-vsock-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
vhost-user-vsock.c	virtio: add vhost-user-vsock base device	2020-06-12 10:17:06 -04:00
vhost-user.c	Fix vhost-user buffer over-read on ram hot-unplug	2020-07-27 10:28:28 -04:00
vhost-vdpa.c	vhost-vdpa :Fix Coverity CID 1430270 / CID 1420267	2020-07-27 10:28:28 -04:00
vhost-vsock-common.c	vhost-vsock: add vhost-vsock-common abstraction	2020-06-12 10:17:06 -04:00
vhost-vsock-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
vhost-vsock.c	vhost-vsock: add vhost-vsock-common abstraction	2020-06-12 10:17:06 -04:00
vhost.c	vhost: implement vhost_force_iommu method	2020-07-03 07:57:04 -04:00
virtio-9p-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
virtio-balloon-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
virtio-balloon.c	virtio-balloon: Replace free page hinting references to 'report' with 'hint'	2020-07-22 07:57:07 -04:00
virtio-blk-pci.c	virtio-blk-pci: default num_queues to -smp N	2020-08-27 08:29:13 -04:00
virtio-bus.c	virtio: notify virtqueue via host notifier when available	2019-11-06 06:35:00 -05:00
virtio-crypto-pci.c	virtio: Drop broken and superfluous object_property_set_link()	2020-07-22 07:57:07 -04:00
virtio-crypto.c	qom: Change object_get_canonical_path_component() not to malloc	2020-07-21 16:23:43 +02:00
virtio-input-host-pci.c
virtio-input-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
virtio-iommu-pci.c	qom: Put name parameter before value / visitor parameter	2020-07-10 15:18:08 +02:00
virtio-iommu.c	virtio-iommu: Fix coverity issue in virtio_iommu_handle_command()	2020-07-13 14:36:08 +01:00
virtio-mem-pci.c	virtio-mem-pci: force virtio version 1	2020-07-27 09:38:33 -04:00
virtio-mem-pci.h	virtio-pci: Send qapi events when the virtio-mem size changes	2020-07-03 07:57:04 -04:00
virtio-mem.c	meson: infrastructure for building emulators	2020-08-21 06:30:17 -04:00
virtio-mmio.c	qdev: set properties with device_class_set_props()	2020-01-24 20:59:15 +01:00
virtio-net-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
virtio-pci.c	virtio-pci: add virtio_pci_optimal_num_queues() helper	2020-08-27 08:29:13 -04:00
virtio-pci.h	virtio-pci: add virtio_pci_optimal_num_queues() helper	2020-08-27 08:29:13 -04:00
virtio-pmem-pci.c	qom: Put name parameter before value / visitor parameter	2020-07-10 15:18:08 +02:00
virtio-pmem-pci.h
virtio-pmem.c	qom: Change object_get_canonical_path_component() not to malloc	2020-07-21 16:23:43 +02:00
virtio-rng-pci.c	virtio: Drop broken and superfluous object_property_set_link()	2020-07-22 07:57:07 -04:00
virtio-rng.c	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
virtio-scsi-pci.c	virtio-scsi-pci: default num_queues to -smp N	2020-08-27 08:29:13 -04:00
virtio-serial-pci.c	qdev: Convert uses of qdev_set_parent_bus() with Coccinelle	2020-06-15 22:05:08 +02:00
virtio.c	virtio-pci: fix virtio_pci_queue_enabled()	2020-07-27 11:34:50 -04:00