Forum for questions and support relating to the 1.34.x releases only.
rknobbe
Posts: 8 Joined: Fri Jul 16, 2004 4:13 pm
Post
by rknobbe Mon Jan 25, 2021 4:14 pm
I've been getting oom-killer messages since I added a new camera. Rather than use a calculator to try to add up the total memory required, I figured I'd let MySQL do the work.
Somebody please check my math. Maybe others will benefit from the mysql script.
Code: Select all
mysql> select x.Id, x.Width, x.Height, x.ImageBufferCount, x.Colours, x.BufferSpace as BufferMB, 1.2*sum(x.BufferSpace) over (Order by Id) as RunningTotalMB_w_OH from (select Id, Width,Height,ImageBufferCount,Colours,(W
idth*Height*ImageBufferCount*Colours/1024/1024) as BufferSpace from Monitors order by Id) x;
+----+-------+--------+------------------+---------+---------------+---------------------+
| Id | Width | Height | ImageBufferCount | Colours | BufferMB | RunningTotalMB_w_OH |
+----+-------+--------+------------------+---------+---------------+---------------------+
| 1 | 1920 | 1080 | 100 | 3 | 593.26171875 | 711.914062500 |
| 2 | 1920 | 1080 | 50 | 3 | 296.63085938 | 1067.871093756 |
| 5 | 1920 | 1080 | 40 | 3 | 237.30468750 | 1352.636718756 |
| 6 | 704 | 480 | 20 | 3 | 19.33593750 | 1375.839843756 |
| 7 | 704 | 480 | 20 | 3 | 19.33593750 | 1399.042968756 |
| 8 | 1920 | 1080 | 20 | 3 | 118.65234375 | 1541.425781256 |
| 9 | 704 | 480 | 20 | 3 | 19.33593750 | 1564.628906256 |
| 10 | 704 | 480 | 20 | 3 | 19.33593750 | 1587.832031256 |
| 11 | 640 | 480 | 20 | 1 | 5.85937500 | 1594.863281256 |
| 12 | 480 | 360 | 20 | 1 | 3.29589844 | 1598.818359384 |
| 13 | 2560 | 1920 | 110 | 4 | 2062.50000000 | 4073.818359384 |
| 14 | 2560 | 1920 | 121 | 4 | 2268.75000000 | 6796.318359384 |
| 15 | 640 | 480 | 20 | 4 | 23.43750000 | 6824.443359384 |
+----+-------+--------+------------------+---------+---------------+---------------------+
13 rows in set (3.46 sec)
burger
Posts: 390 Joined: Mon May 11, 2020 4:32 pm
Post
by burger Mon Jan 25, 2021 9:03 pm
Very cool. I added to wiki.zoneminder.com/MySQL. Not sure if this addresses the difference between ZMA and ZMC though. In my case, Htop says ZMC -m36 below (Record only) has 6% of memory while ZMA -m7 has 5% of memory. The numbers below don't line up. (Not that I know what I'm talking about).
ZMC == record
ZMA == analysis/motion detection
You can verify a given process memory use via /proc/<pid>/status ofc.
Code: Select all
+----+-------+--------+------------------+---------+---------------+---------------------+
| Id | Width | Height | ImageBufferCount | Colours | BufferMB | RunningTotalMB_w_OH |
+----+-------+--------+------------------+---------+---------------+---------------------+
| 1 | 1280 | 720 | 50 | 4 | 175.78125000 | 210.937500000 |
| 4 | 800 | 600 | 50 | 4 | 91.55273438 | 742.675781256 |
| 5 | 1280 | 720 | 50 | 4 | 175.78125000 | 953.613281256 |
| 6 | 800 | 600 | 50 | 4 | 91.55273438 | 1063.476562512 |
| 7 | 1280 | 1024 | 50 | 4 | 250.00000000 | 1363.476562512 |
| 10 | 800 | 600 | 50 | 4 | 91.55273438 | 1473.339843768 |
| 11 | 1280 | 720 | 50 | 4 | 175.78125000 | 1684.277343768 |
| 14 | 1280 | 720 | 50 | 4 | 175.78125000 | 2317.089843768 |
| 15 | 1280 | 720 | 50 | 3 | 131.83593750 | 2475.292968768 |
| 17 | 704 | 480 | 50 | 4 | 64.45312500 | 2552.636718768 |
| 18 | 704 | 480 | 50 | 4 | 64.45312500 | 2629.980468768 |
| 21 | 1280 | 720 | 50 | 4 | 175.78125000 | 2840.917968768 |
| 24 | 352 | 240 | 50 | 4 | 16.11328125 | 3014.941406268 |
| 25 | 640 | 480 | 50 | 4 | 58.59375000 | 3085.253906268 |
| 26 | 1280 | 720 | 50 | 4 | 175.78125000 | 3296.191406268 |
| 27 | 800 | 600 | 50 | 4 | 91.55273438 | 3406.054687524 |
| 28 | 640 | 480 | 50 | 4 | 58.59375000 | 3476.367187524 |
| 29 | 800 | 600 | 25 | 4 | 45.77636719 | 3531.298828152 |
| 30 | 1280 | 720 | 50 | 4 | 175.78125000 | 3742.236328152 |
| 31 | 800 | 600 | 50 | 3 | 68.66455078 | 3824.633789088 |
| 32 | 800 | 600 | 50 | 4 | 91.55273438 | 3934.497070344 |
| 34 | 640 | 480 | 125 | 4 | 146.48437500 | 4220.141601600 |
| 35 | 640 | 360 | 100 | 4 | 87.89062500 | 4325.610351600 |
| 36 | 2560 | 1920 | 100 | 4 | 1875.00000000 | 6575.610351600 |
+----+-------+--------+------------------+---------+---------------+---------------------+
(Some entries have been removed for brevity)
fastest way to test streams:ffmpeg -i rtsp://<user>:<pass>@<ipaddress>:554/path ./output.mp4 (if terminal only)ffplay rtsp://<user>:<pass>@<ipaddress>:554/path (gui)
