linux-kernel - Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch

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Date:   Tue, 16 Oct 2018 00:28:32 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     John Garry <john.garry@...wei.com>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        <jejb@...ux.vnet.ibm.com>, <linuxarm@...wei.com>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch


John,

> As I mentioned in the thread that spawned from this, we actually can't
> expose multiple hw queues at the moment. And, if we did, we find a
> performance drop due to having to go back to manage this IPTT
> internally.
>
> So how to handle? We're going to continue to work towards exposing
> multiple queues to upper layer, but for the moment I think patch 6/7 is
> a good change.

Thanks for the discussion. That's exactly what I was looking for.

Applied to 4.20/scsi-queue.

-- 
Martin K. Petersen	Oracle Linux Engineering