linux-kernel - Re: [PATCH] scsi: pm80xx: Increase reserved tags from 8 to 128

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Message-ID: <173379777412.2787035.2116624888834112559.b4-ty@oracle.com>
Date: Mon,  9 Dec 2024 21:35:36 -0500
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Jack Wang <jinpu.wang@...ud.ionos.com>,
        "James E . J . Bottomley" <James.Bottomley@...senPartnership.com>,
        Salomon Dushimirimana <salomondush@...gle.com>
Cc: "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Igor Pylypiv <ipylypiv@...gle.com>
Subject: Re: [PATCH] scsi: pm80xx: Increase reserved tags from 8 to 128

On Tue, 26 Nov 2024 22:49:23 +0000, Salomon Dushimirimana wrote:

> Increase the number of reserved tags to prevent command processing
> failures when the driver is under stress. 8 reserved tags are quickly
> getting all used up leading to errors when command completions are
> delayed.
> 
> The driver needs ~512 ccbs/tags for maximum I/O utilization:
> 16 (max disks) * 32 (max SATA queue depth) = ~512 ccbs/tags.
> 
> [...]

Applied to 6.14/scsi-queue, thanks!

[1/1] scsi: pm80xx: Increase reserved tags from 8 to 128
      https://git.kernel.org/mkp/scsi/c/b64004dbcd23

-- 
Martin K. Petersen	Oracle Linux Engineering