Searching for Virtio Blk Blk Mq Support information? Find all needed info by using official links provided below.
https://www.linux-kvm.org/images/6/63/02x06a-VirtioBlk.pdf
Virtio-blk Multi-queue Conversion and QEMU Optimization Ming Lei, Canonical Ltd. KVM Forum 2014. ... - Virtio-SCSI block mq support virtio-scsi dataplane linux virtio-scsi support multi dispatch queue. 21 Ming Lei References: [1] Asias He, Virtio-blk Performance Improvement, KVM forum ...
http://lkml.iu.edu/hypermail/linux/kernel/1311.0/01132.html
Hi Jens, I'm not very sure about this bisect, but anyway it'd be good to inform you of a possible problem on commit commit 3a02db083a78c9f3c9b69305ab513f9422d91b08
https://www.linux-kvm.org/images/f/f9/2012-forum-virtio-blk-performance-improvement.pdf
3 Asias He, Red Hat Inc. Why improve virtio-blk I/O intensive applications Need high storage performance Virtio-blk Simple, Just simple read/write/flush command, no scsi overhead, Fast SSD -> PCIE interface instead of SCSI or SATA interface Available for a while, benefits existing users virtio-blk is about ~3 times faster than virtio-scsi in my
https://bugzilla.kernel.org/show_bug.cgi?id=73501
This could mean that the conversion of virtio-blk to blk-mq (in commit 1cf7e9c6), esp. the conversion of virtblk_freeze(), was incorrect; *or* it could mean that the blk_mq_stop_hw_queues() function (added in commit 280d45f6) was. Thank you.
http://linux-kernel.2935.n7.nabble.com/PATCH-0-2-block-multiqueue-support-for-virtio-blk-td742724.html
[PATCH 0/2] block multiqueue support for virtio-blk. This is an updated version of the block multiqueue support for virtio-blk, against Jens' blk-mq/core tree. It's been working fine on my local...
https://www.thomas-krenn.com/en/wiki/Linux_Multi-Queue_Block_IO_Queueing_Mechanism_(blk-mq)
Apr 09, 2015 · blk-mq (Multi-Queue Block IO Queueing Mechanism) is a new framework for the Linux block layer that was introduced with Linux Kernel 3.13, and which has become feature-complete with Kernel 3.16.[1] Blk-mq allows for over 15 million IOPS with high-performance flash devices (e.g. PCIe SSDs) on 8-socket servers, though even single and dual socket servers also benefit considerably from blk-mq…Author: Thomas-Krenn.AG
https://patchwork.kernel.org/patch/9645537/
On Tue, Mar 28, 2017 at 04:39:25PM +0800, Changpeng Liu wrote: > Currently virtio-blk driver does not provide discard feature flag, so the > filesystems which built on top of the block device will not send discard > command. This is okay for HDD backend, but it will impact the performance > for SSD backend. > > Add a feature flag VIRTIO_BLK_F_DISCARD and command VIRTIO_BLK_T_DISCARD > to ...
https://wiki.mikejung.biz/KVM_/_Xen
Commands like TRIM or DISCARD can be added to the virtio-blk driver, however QUMU must be updated, and the Guest drivers must also be updated to include the new commands. All Virtio-blk devices are presented to the Guest as a PCI device. The problem with this is that there is a 1:1 relationship between devices and PCI devices, which causes PCI ...
https://github.com/torvalds/linux/commit/f70ced09170761acb69840cafaace4abc72cba4b
This patch supports to run one single flush machinery for each blk-mq dispatch queue, so that: - current init_request and exit_request callbacks can cover flush request too, then the buggy copying...
https://code.woboq.org/linux/linux/drivers/block/virtio_blk.c.html
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