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From: Dan Vacura <w36195@motorola.com>
To: Michael Grzeschik <mgr@pengutronix.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	linux-usb@vger.kernel.org, balbi@kernel.org,
	paul.elder@ideasonboard.com, kernel@pengutronix.de,
	nicolas@ndufresne.ca, kieran.bingham@ideasonboard.com
Subject: Re: [PATCH 3/5] usb: gadget: uvc: increase worker prio to WQ_HIGHPRI
Date: Fri, 6 May 2022 16:49:01 -0500	[thread overview]
Message-ID: <YnWXzZdEXrED6bMW@p1g3> (raw)
In-Reply-To: <20220502090003.GH7671@pengutronix.de>

Hi Michael,

On Mon, May 02, 2022 at 11:00:03AM +0200, Michael Grzeschik wrote:
> Hi Dan,
> 
> On Fri, Apr 29, 2022 at 10:01:37PM +0200, Michael Grzeschik wrote:
> > On Fri, Apr 29, 2022 at 01:51:48PM -0500, Dan Vacura wrote:
> > > Thanks for this change it improves the performance with the DWC3
> > > controller on QCOM chips in an Android 5.10 kernel. I haven't tested the
> > > scatter/gather path, so memcpy was used here via
> > > uvc_video_encode_isoc(). I was able to get around 30% improvement (fps
> > > on host side). I did modify the alloc to only set the WQ_HIGHPRI flag.
> 
> I missed to ask you to try the WQ_CPU_INTENSIVE flag. It would be
> interesting if you can see further improvement.

I had some time to test this flag and I couldn't find any discernible
difference with it set or not.

Regards,

Dan

  reply	other threads:[~2022-05-06 21:49 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-02 23:39 [PATCH 0/5] usb: gadget: uvc: fixes and improvements Michael Grzeschik
2022-04-02 23:39 ` [PATCH 1/5] usb: gadget: uvc: reset bytesused on queue cancel Michael Grzeschik
2022-04-05  8:43   ` Sergey Shtylyov
2022-04-05 15:01     ` Dan Vacura
2022-04-06  8:26       ` Michael Grzeschik
2022-04-02 23:39 ` [PATCH 2/5] usb: gadget: uvc: calculate the number of request depending on framesize Michael Grzeschik
2022-04-19 20:46   ` Laurent Pinchart
2022-05-08 22:48     ` Michael Grzeschik
2022-04-02 23:39 ` [PATCH 3/5] usb: gadget: uvc: increase worker prio to WQ_HIGHPRI Michael Grzeschik
2022-04-19 20:46   ` Laurent Pinchart
2022-04-29 18:51     ` Dan Vacura
2022-04-29 20:01       ` Michael Grzeschik
2022-05-02  9:00         ` Michael Grzeschik
2022-05-06 21:49           ` Dan Vacura [this message]
2022-09-28 20:12         ` Laurent Pinchart
2022-04-02 23:39 ` [PATCH 4/5] usb: gadget: uvc: call uvc uvcg_warn on completed status instead of uvcg_info Michael Grzeschik
2022-04-19 20:47   ` Laurent Pinchart
2022-04-02 23:39 ` [PATCH 5/5] usb: gadget: uvc: stop the pump on more conditions Michael Grzeschik
2022-04-04 11:30   ` kernel test robot
2022-04-04 13:07   ` Michael Grzeschik
2022-04-19 14:21     ` Greg KH

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