linux-kernel - Re: [PATCH] virtio_blk: set the default scheduler to none

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Message-ID: <CACGkMEt4_T5-aArkS4LOQsndwrMkjm_K-uPjdFnNRvwknQPaPg@mail.gmail.com>
Date:   Thu, 7 Dec 2023 14:02:36 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Li Feng <fengli@...rtx.com>
Cc:     Jens Axboe <axboe@...nel.dk>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        "open list:BLOCK LAYER" <linux-block@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:VIRTIO BLOCK AND SCSI DRIVERS" 
        <virtualization@...ts.linux.dev>
Subject: Re: [PATCH] virtio_blk: set the default scheduler to none

On Thu, Dec 7, 2023 at 12:33 PM Li Feng <fengli@...rtx.com> wrote:
>
> virtio-blk is generally used in cloud computing scenarios, where the
> performance of virtual disks is very important. The mq-deadline scheduler
> has a big performance drop compared to none with single queue.

At least you can choose the scheduler based on if mq is supported or not?

Thanks