Zoneminder Load

So my buddy Rob runs Blue Iris, I don’t think it is a bad product, just that for me, I am a Linux guy and feel more comfortable with Zoneminder running on Linux.

But I do want to share how I monitor my environment with him and if anyone reads my blog.

This is my current zoneminder rig

But I have since added and upgraded a few more cameras.

  • Currently I have 24 cameras (25 monitors but 1 is a simple jpeg)
  • 6 are 1080P cameras
  • 1 is a 4MP camera
  • Most of the Cameras are set at 10FPS
  • Most of the monitors are set at modect

Most cameras are doing motion detection and I think all but 1 of the 1080P cameras are doing motion detection so it gets BUSY

Note that the CPUs are busy (curious that RAM is barely used).  This utility, gnome-system-monitor give a pretty real time graph as to how resources are being used on the box.

Sometimes the GUI is not available so you run top

And although you are given a point in time value for load average, this may not give you an idea if you are overloaded or not.

This is an 2 socket 4 core per CPU machine (so 8 total cores),  so running at 13, 11, and 9 may indicated an overloaded box.

But running sar -q gives you a history from midnight with an average for the day

Note that the load average for the day is 5.71, 5.76, and 5.74 which is what I usually see with this setup.

For those interested the CPUs Intel(R) Xeon(R) CPU E5606 @ 2.13GH.

If CPU becomes an issue I can upgrade, two 6 core 3GHz CPUs would run me about $50 each.

Another way I can reduce load is to use the secondary channel which is at a lower resolution to do the analytics and trigger the main channel to record.

Or I could use external devices like an X10 network or other 433Mhz devices to trigger the cameras.



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