linux-kernel - Re: [PATCH 0/4] nvmet: support polling queue task for bio request

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Message-ID: <28949e52-7db7-4227-6bbd-cb8b627b390f@nvidia.com>
Date:   Wed, 13 Sep 2023 18:53:46 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Ping Gan <jacky_gam_2001@....com>
CC:     "ping_gan@...l.com" <ping_gan@...l.com>,
        "kbusch@...nel.org" <kbusch@...nel.org>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Chaitanya Kulkarni <chaitanyak@...dia.com>,
        "hch@....de" <hch@....de>, "sagi@...mberg.me" <sagi@...mberg.me>,
        "axboe@...nel.dk" <axboe@...nel.dk>
Subject: Re: [PATCH 0/4] nvmet: support polling queue task for bio request

On 9/13/2023 1:34 AM, Ping Gan wrote:
> Since nvme target currently does not support to submit bio to a polling
> queue, the bio's completion relies on system interrupt. But when there
> is high workload in system and the competition is very high, so it makes
> sense to add polling queue task to submit bio to disk's polling queue
> and poll the completion queue of disk.
> 
>

I did some work in the past for nvmet polling and saw good
performance improvement.

Can you please share performance numbers for this series ?

-ck