Rob Bradford 3480e69ff5 vmm: Cache whether io_uring is supported in DeviceManager ... Probing for whether the io_uring is supported is time consuming so cache this value if it is known to reduce the cost for secondary block devices that are added. Before: cloud-hypervisor: 3.988896ms: <vmm> INFO:vmm/src/device_manager.rs:1901 -- Creating virtio-block device: DiskConfig { path: Some("/home/rob/workloads/focal-server-cloudimg-amd64-custom-20210609-0.raw"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk0"), disable_io_uring: false, pci_segment: 0 } cloud-hypervisor: 14.129591ms: <vmm> INFO:vmm/src/device_manager.rs:1983 -- Using asynchronous RAW disk file (io_uring) cloud-hypervisor: 14.159853ms: <vmm> INFO:vmm/src/device_manager.rs:1901 -- Creating virtio-block device: DiskConfig { path: Some("/tmp/disk"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk1"), disable_io_uring: false, pci_segment: 0 } cloud-hypervisor: 22.110281ms: <vmm> INFO:vmm/src/device_manager.rs:1983 -- Using asynchronous RAW disk file (io_uring) After: cloud-hypervisor: 4.880411ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/home/rob/workloads/focal-server-cloudimg-amd64-custom-20210609-0.raw"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk0"), disable_io_uring: false, pci_segment: 0 } cloud-hypervisor: 14.105123ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring) cloud-hypervisor: 14.134837ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/tmp/disk"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk1"), disable_io_uring: false, pci_segment: 0 } cloud-hypervisor: 14.221869ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring) Signed-off-by: Rob Bradford <robert.bradford@intel.com>		2021-11-12 18:09:55 +00:00
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src	vmm: Cache whether io_uring is supported in DeviceManager	2021-11-12 18:09:55 +00:00
Cargo.toml	deps: Downgrade anyhow	2021-11-10 09:43:12 +00:00