kevinpham
08-20-2002, 02:05 PM
Hello All,
Is there anyone can helpme understand what is this meant:
1:07am up 5 days, 14:41, 1 user, load average: 1.02, 0.41, 0.85
I understand up to the load everage. what is `1.02, 0.41, 0.85' points to?
and what is the biggest can my server has before it crashes?
Perfecthost
08-20-2002, 02:14 PM
Hello-
Those are load averages currently, 5 minutes ago, and 15 minutes ago.
As far as how much your server can take before going down, I can't tell you, as it is largely dependent on the server itself.
-Lamar
kevinpham
08-20-2002, 02:22 PM
thanks for your quick response, but i still being dump to understand what is 'load everage' means? is this the percentage? meaning 1.02% capacity?
fr0zenWHS
08-20-2002, 02:24 PM
"The load average numbers give the average number of jobs in the run queue over the last 1, 5, and 15 minutes. (These three time periods may vary from one vendor's Unix system to another, but are usually 1, 5 and 15 minutes.) In other words, the n-minute load average is the number of processes competing for the attention of the CPU(s) at any moment, averaged over n minutes. "
http://web.gat.com/docview/load_average.html
The important thing to note here is that the load average relates to the run queue, not CPU time. This means that if a program is "waiting" for anything, a computation, waiting for data from the hard drive, or just waiting in line to use the CPU it counts against the load. It's actually possible to have a load of 3.0 and cpu usage at only 40%.
Again, it depends on the circumstances... A web server should typically have a load less than 1.0, but I've been on single processor systems with a load avg of 20.0 that were still quite responsive.
jhcashman
08-20-2002, 03:14 PM
I think if your under 2 its good
apollo
08-20-2002, 04:36 PM
I have seen over 35 load average and it's working ok :)
Polar
08-20-2002, 05:07 PM
Does anyone know if there is a command in unix that prints the load average numbers and update them continuously?
Alan - Vox
08-20-2002, 05:27 PM
ive seen a load average of 999 and it wasnt working very good
Perfecthost
08-20-2002, 07:22 PM
Originally posted by Polar
Does anyone know if there is a command in unix that prints the load average numbers and update them continuously?
Are you talking about printing to the screen like "top", or are you referring to hardcopy?
Aussie Bob
08-20-2002, 07:35 PM
Originally posted by apollo
I have seen over 35 load average and it's working ok :)
:eek: for how long?? :eek:
Aussie Bob
08-20-2002, 07:36 PM
Originally posted by SplashHost.com
ive seen a load average of 999 and it wasnt working very good
:laugh: :D
bitserve
08-20-2002, 08:31 PM
We get alerted if it goes over 3. Although it does hit three during nightly backups at times.
Steve-PWH
08-20-2002, 08:44 PM
I use 3 accounts on 3 servers
1 with phpwebhosting
1 with VenturesOnline *DigDug Server
And personal site on a RaQ
Server load of 4 on first 2 results in noticable slowdown on PHPWH but none on VO
Highest serverload I every see on PHPWH was 25 and the server was almost dead and none responsive -> 20+ sec page time
Seen same load on VO DigDug server and its still fast LOL
Its all about server spec where DigDig as dual procs and 3.6gb of ram to play with and cope with a healthy load the PHPWH server looks like it don't
Server load on RaQ of more than 2 Shows masive slow down :(
