For background, this is the CPU utilization for the system, a low resolution motion detection (Monitor 3, 4 fps, 1024 kbps VBR) and the linked 5MP video (Monitor 4, 8 fps, 6144 kbps)
Zoneminder 1.34, 2 5MP cameras
- Zabbix_ZM134_CPU.png (24.45 KiB) Viewed 15509 times
- Zabbix_ZM134_Monitor_3.png (17.76 KiB) Viewed 15509 times
- Zabbix_ZM134_Monitor_4.png (16.71 KiB) Viewed 15509 times
The decoding of the 5MP video kept a CPU near maximum and the server was limited to two 5MP cameras (a second server was dedicated to the 8MP camera). I tried to upgrade from 1.34.x to 1.36.10, but there was very high CPU iowait time that I could not diagnose; I then opted to apt purge, delete the old videos and drop the database for a fresh install. The results were worth the work.
The new installation:
Cameras
2 x Amcrest IP5M-1173E POE
2 streams at 640x480 (8 fps,1024 kbps VBR) and 2592x1944 (15 fps, 10240 kbps VBR)
1 x Amcrest IP8M-2493E POE
2 streams at 704x480 (8 fps, 1024 kbps VBR) and 3840x2160 (15 fps, 10240 kbps VBR)
Raspberry Pi Server
Canakit Raspberry Pi 8 GB
CanaKit Premium White Case (High Gloss)
Set of 3 Aluminum Heat Sinks
CanaKit Fan
1 TB Hard Disk in USB3 HD Enclosure
Software
Ubuntu 20.04 32-bit OS
Raspberry Pi OS Zoneminder was not able to recognize camera streams greater than 1080p
Zoneminder 1.36.10 installed from Launchpad repository
So far all is reasonably good, although I did notice some problems with the saved high resolution video. I'll look into that later.
As for performance, the overall CPU utilzation -- even at much higher frame and data rates -- is low and I have much lower CPU iowait utilization than in the past. As I am limited to three attachments, I post the current performance monitoring graphs in replies to this post.
