From: Kevin Wolf <kwolf@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-devel@nongnu.org, Fam Zheng <fam@euphon.net>,
qemu-block@nongnu.org, Hanna Reitz <hreitz@redhat.com>
Subject: Re: [PATCH 0/2] block: change reqs_lock to QemuMutex
Date: Fri, 18 Aug 2023 17:36:10 +0200 [thread overview]
Message-ID: <ZN+P6hM/+2ZiDbKy@redhat.com> (raw)
In-Reply-To: <20230808155852.2745350-1-stefanha@redhat.com>
Am 08.08.2023 um 17:58 hat Stefan Hajnoczi geschrieben:
> As part of the ongoing multi-queue QEMU block layer work, I found that CoMutex
> reqs_lock scales poorly when more IOThreads are added. These patches double
> IOPS in the 4 IOThreads randread benchmark that I have been running with my
> out-of-tree virtio-blk-iothread-vq-mapping branch
> (https://gitlab.com/stefanha/qemu/-/commits/virtio-blk-iothread-vq-mapping).
>
> These patches can be merged in preparation for virtio-blk multi-queue block
> layer support.
Thanks, applied to the block branch.
Kevin
prev parent reply other threads:[~2023-08-18 15:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 15:58 [PATCH 0/2] block: change reqs_lock to QemuMutex Stefan Hajnoczi
2023-08-08 15:58 ` [PATCH 1/2] block: minimize bs->reqs_lock section in tracked_request_end() Stefan Hajnoczi
2023-08-08 18:14 ` Eric Blake
2023-08-08 15:58 ` [PATCH 2/2] block: change reqs_lock to QemuMutex Stefan Hajnoczi
2023-08-08 18:22 ` Eric Blake
2023-08-18 15:36 ` Kevin Wolf [this message]
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