From: Bean Huo <huobean@gmail.com>
To: Avri Altman <avri.altman@wdc.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Bart Van Assche <bvanassche@acm.org>,
Bean Huo <beanhuo@micron.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] scsi: ufs: Allow RTT negotiation
Date: Wed, 08 May 2024 18:32:40 +0200 [thread overview]
Message-ID: <e00686432d2aa09880f801eecadbb2bdf6d23573.camel@gmail.com> (raw)
In-Reply-To: <20240503113429.7220-1-avri.altman@wdc.com>
On Fri, 2024-05-03 at 14:34 +0300, Avri Altman wrote:
> UFS4.0, and specifically gear 5 changes this, and requires the device
> to
> be more attentive. This doesn't come free - the device has to
> allocate
> more resources to that end, but the sequential write performance
> improvement is significant. Early measurements shows 25% gain when
> moving from rtt 2 to 9. Therefore, set bMaxNumOfRTT to be
> min(bDeviceRTTCap, NORTT) as UFSHCI expects.
>
> Signed-off-by: Avri Altman <avri.altman@wdc.com>
Avri,
I was still curious about this 25% gain, so I will take a look. It
would be great if you could share more information about this.
Reviewed-by: Bean Huo <beanhuo@micron.com>
next prev parent reply other threads:[~2024-05-08 16:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-03 11:34 [PATCH v2] scsi: ufs: Allow RTT negotiation Avri Altman
2024-05-08 16:32 ` Bean Huo [this message]
2024-05-10 4:00 ` Avri Altman
2024-05-13 9:32 ` Peter Wang (王信友)
2024-05-13 10:38 ` Avri Altman
2024-05-13 11:57 ` Peter Wang (王信友)
2024-05-13 16:19 ` Avri Altman
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