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solved Server load in Dashboard?

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K_K
@k-k
7 years ago
95 posts
In the Dashboard there are the boxes for "1 minute load", "5 minute load" and "15 minute load" (if you have them enabled).

What do the numbers mean/represent exactly, percentage of server processing power used or something similar?

At what point it would be good to consider upgrading for more powerful server if the load keeps up?
updated by @k-k: 08/07/17 10:16:56AM
michael
@michael
7 years ago
7,744 posts
Here's some light reading:
https://en.wikipedia.org/wiki/Load_%28computing%29

If those numbers are consistently above 1.0 consider upgrading. 1.0 is 100% of the CPU.

So if they all read 1.0 it would be
* the server has been using 100% of the cpu for the last 1 minute
* the server has been using 100% of the cpu for the last 5 minutes
* the server has been using 100% of the cpu for the last 15 minutes
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K_K
@k-k
7 years ago
95 posts
Thanks for info.
Black-Eagle
Black-Eagle
@black-eagle
7 years ago
57 posts
Thanks you Michael.
I did not know that.
michael
@michael
7 years ago
7,744 posts
Learning new stuff all the time around here too, mostly from brian.

Sometimes the server load will get high, like 5.56 15.21 9.46. but that's not a huge issue unless it stays like that.

If its over 1.0 but stays constantly under 5 it means that the server is overloaded and should be upgraded.

But if it starts climbing to 10+ this could be something stuck, try restarting the web server to get it going again.

As I understand it, the server can function at over 1.0 but anything that gets asked of it will be sent to the back of the queue to be done once its current load of stuff can be finished.
brian
@brian
7 years ago
10,148 posts
Linux's scheduler is really good - like Michael pointed out, any load over 1.00 means that processes are having to wait to receive CPU time, so you're going to get diminished performance. In Jamroom we show you the 5 minute load. The 1 minute load is going to go up and down a lot more, but the 5 minute is the average queue depth over the last 5 minutes - if that is constantly over 1 then it means the site could perform better if upgraded.


--
Brian Johnson
Founder and Lead Developer - Jamroom
https://www.jamroom.net