linux-kernel - Re: [PATCH v2] storvsc: Set up correct queue depth values for IDE devices

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Message-ID: <yq1fu3pisaa.fsf@oracle.com>
Date:   Fri, 20 Apr 2018 15:36:45 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Long Li <longli@...rosoft.com>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        "Michael Kelley \(EOSG\)" <Michael.H.Kelley@...rosoft.com>,
        Long Li <longli@...uxonhyperv.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "James E . J . Bottomley" <JBottomley@...n.com>,
        "devel\@linuxdriverproject.org" <devel@...uxdriverproject.org>,
        "linux-scsi\@vger.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] storvsc: Set up correct queue depth values for IDE devices


Long,

> If num_cpus=1, we don't have any sub channels.
>
> The host offers one sub channel for VM with 5 CPUs, after that it offers
> an additional sub channel every 4 CPUs.
>
> The primary channel is always offered.

Applied to 4.17/scsi-fixes. Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering