[libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.

[David Plowman]

Hello Nomura-san

Thanks for sending that log. At least it seems to be showing the same
thing that Naush saw, so hopefully there is only a single problem.

You had previously mentioned the following two git commits:

libcamera: c3548a333f86d31213ca9f2ccc3faf743b246743
rpi-update: f794477c7c48061a720d6b9331d27f8d0300009c

Can you perhaps confirm whether this version of the software, with the
above commits at the top of the tree, did show the memory problem or
did not show it?

Best regards
David

On Sat, 10 Oct 2020 at 02:16, <tetsuya.nomura at soho-enterprise.com> wrote:
>
> Dear David-san and Naush-san
>
> We have another dmesg log as attached.
>
> Best Regards,
>
> NOMURA
> -----Original Message-----
> From: tetsuya.nomura at soho-enterprise.com <tetsuya.nomura at soho-enterprise.com>
> Sent: Saturday, October 10, 2020 8:20 AM
> To: 'Naushir Patuck' <naush at raspberrypi.com>; 'David Plowman' <david.plowman at raspberrypi.com>
> Cc: 'libcamera-devel at lists.libcamera.org' <libcamera-devel at lists.libcamera.org>
> Subject: RE: [libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.
>
> Dear David-san and Naush-san
>
> And after login again and run the qcam, it stopped after a few minutes and see the login window.
> But this time I could not login.(no dmseg was got after this symptom)
>
> While second trial of qcam the response speed for the click became very slow.
> Image display speed kept 30.0fps.
>
> For an additional report.
>
> Best Regards,
>
> NOMURA
> -----Original Message-----
> From: tetsuya.nomura at soho-enterprise.com <tetsuya.nomura at soho-enterprise.com>
> Sent: Saturday, October 10, 2020 8:08 AM
> To: 'Naushir Patuck' <naush at raspberrypi.com>; 'David Plowman' <david.plowman at raspberrypi.com>
> Cc: 'libcamera-devel at lists.libcamera.org' <libcamera-devel at lists.libcamera.org>
> Subject: RE: [libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.
>
> Dear David-san Naush-san
>
> I got reproduce the symptom and got the dmseg as attached.
>
> It would be great if it will be your help to solve the issue.
>
> Best Regards,
>
> NOMURA
>
> -----Original Message-----
> From: Naushir Patuck <naush at raspberrypi.com>
> Sent: Thursday, October 8, 2020 5:19 PM
> To: tetsuya.nomura at soho-enterprise.com
> Cc: David Plowman <david.plowman at raspberrypi.com>; libcamera-devel at lists.libcamera.org
> Subject: Re: [libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.
>
> Hi all,
>
> I did try a long running test, and interestingly, mine did also fail at around the 15hour mark (approx 1540000 frames).  My qcam process (running under gdb) was just terminated at that point.  However, no reboot occurred.  Looking at the dmesg logs, it seems that the Out of Memory killer terminated the task.  This suggests that there is maybe a memory leak lurking somewhere in either libcamera core or the Raspberry Pi ipa/pipeline handler.
>
> Nomura-san, could you send us the output of dmesg when you run into this failure again, just to check if we are seeing the same thing?
>
> Thanks,
> Naush
>
> On Thu, 8 Oct 2020 at 07:48, <tetsuya.nomura at soho-enterprise.com> wrote:
> >
> > Dear David-san
> >
> > We took a log to catch when (how long time after application start) reboot occurs.
> > The logs says around 1100minuite, maybe the raspi got rebooted, no other log.
> >
> > And the older version and the combination, this phenomena never happened.
> >
> > libcamera: c3548a333f86d31213ca9f2ccc3faf743b246743
> > rpi-update: f794477c7c48061a720d6b9331d27f8d0300009c
> > (We are using the latest one for both.)
> >
> > Best Regards,
> >
> > NOMURA
> > -----Original Message-----
> > From: David Plowman <david.plowman at raspberrypi.com>
> > Sent: Wednesday, October 7, 2020 7:37 PM
> > To: tetsuya.nomura at soho-enterprise.com
> > Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>; Kieran
> > Bingham <kieran.bingham at ideasonboard.com>;
> > libcamera-devel at lists.libcamera.org
> > Subject: Re: [libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.
> >
> > Hello Nomura-san
> >
> > Thanks for your message.
> >
> > So we're not aware of any problems like the one you report but we'll see if we can reproduce it - obviously it will take a little while. Do you believe the Pi crashed completely and rebooted? If so, might we be able to get any system logs that could give us a clue as to what happened?
> >
> > Thanks and best regards
> > David
> >