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Monitor Exits With Error 134
Posted: Sat Jan 14, 2017 7:17 pm
by kbocek
I have a camera I am trying to get working with 1.30, a Hikvision DS-2CD2042WD-I. Many posts here and the wiki say this camera should work fine with zm. Starting zm I see:
Code: Select all
zmdc[6782]: INF ['zmc -m 8' crashed, signal 134]
All my other monitors start fine. The camera is up and accessible.
Does anyone have any ideas?
Re: Monitor Exits With Error 134
Posted: Sun Jan 15, 2017 4:06 pm
by iconnor
Turn on debug logging and check the logs.
Re: Monitor Exits With Error 134
Posted: Mon Jan 16, 2017 7:15 pm
by kbocek
No help. I see a few additional message for other cameras. But this one is the same:
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Jan 16 11:11:07 crystal zmdc[22008]: INF ['zmc -m 8' starting at 17/01/16 11:11:07, pid = 22117]
Jan 16 11:11:07 crystal zmdc[22117]: INF ['zmc -m 8' started at 17/01/16 11:11:07]
Jan 16 11:11:07 crystal zmdc[22008]: INF ['zmc -m 8' crashed, signal 134]
Same starting and started message as with info level logging.
Any other thoughts on how to tackle this?
Re: Monitor Exits With Error 134
Posted: Mon Jan 16, 2017 7:44 pm
by kbocek
Figured it out. Searched for Error 134 here and found a posting suggesting that you lower the number of buffers in the camera setup. I lowered buffers from 50 to 30 and the camera showed up!
This is a really hi res camera. I had already lowered the resolution to 1080p. I think I'll lower it further.
Re: Monitor Exits With Error 134
Posted: Tue Jan 17, 2017 2:19 am
by iconnor
You can alternatively increase the size of /dev/shm... using more ram...
Re: Monitor Exits With Error 134
Posted: Tue Jan 17, 2017 2:28 am
by kbocek
Yeah I need to build a new recorder. How much memory do you think for a dedicated machine hosting 6-8 hi res cameras? Is 4gb enough?
Re: Monitor Exits With Error 134
Posted: Tue Jan 17, 2017 3:01 am
by iconnor
depends on res/buffers, etc.. You will have to do the math.
Re: Monitor Exits With Error 134
Posted: Tue Jan 17, 2017 3:10 am
by kbocek
Well who has the math? I don't know what numbers to use. I can get the bytes per frame. There must be more than that times buffers.
Re: Monitor Exits With Error 134
Posted: Tue Jan 17, 2017 3:15 am
by iconnor
1920*1080*4 bytes * 50 frames = 3,317,760,000 bytes of ram for that monitor.
Now 8 monitors = 26,542,080,000 bytes.