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

[David Plowman]

Hi everyone

This is just to let you know that doing "sudo rpi-update" should now update
your kernel with a fix for this memory leak.

Best regards
David

On Sat, 10 Oct 2020 at 10:16, David Plowman <david.plowman at raspberrypi.com>
wrote:

> 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
> > >
>
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