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09-25-2008 11:16 PM
09-25-2008 11:16 PM
nagiios - check_load
.
.
Usage:check_load -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15
.
.
I know -w means warning but what does WLOAD1, WLOAD5, and WLOAD15 means ?
likewise CLOAD means ?
please explains
Regards
Maaz
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09-26-2008 05:09 AM
09-26-2008 05:09 AM
Re: nagiios - check_load
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09-26-2008 10:08 PM
09-26-2008 10:08 PM
Re: nagiios - check_load
whats is the definition of load ?
-w 10.0,8.0,7.0 ... means show/give warning if load reach to 10.0 within last 1 minute and give the warning if the load reaches to 8.0 within last 5 minutes and also show the warning if the load reaches to 7.0 within last 15 minutes .. right ? but whats this LOAD itself ? is this LOAD is the load on processor/cpu ? whats the unit of LOAD ? whats the minimum value of LOAD and whats the max value .. i mean is there a range(min-max) of LOAD ?
2
a, which value of the LOAD could be consider as low ?
b, which value of the LOAD could be consider as average/tolerable ?
c, which value of the LOAD could be consider as high/non-tolerable ?
I mean is there a standard for the load values ?
Please help
Regards
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09-27-2008 04:33 PM
09-27-2008 04:33 PM
Re: nagiios - check_load
Please see:
http://www.redhat.com/magazine/011sep05/departments/tips_tricks/
On Linux the load average is a measurement of the amount of "work" being done by the machine (without being specific as to what that work is). This "work" could reflect a CPU intensive application (compiling a program or encrypting a file), or something I/O intensive (copying a file from disk to disk, or doing a database full table scan), or a combination of the two.
>>> which value of the LOAD could be consider as low/average/tolerable/high/non-tolerable ?
You may find some information on the Internet about what is "high", but that information is not true. You must know your system and identify what is normal and high by yourself monitoring regularly.
Depending of the server hardware, the type of application, an so on, the number of the load will change. You must know at which load your server start to give poor response time in your applications.
For example, we have some big servers with load average of 80!
>>> I mean is there a standard for the load values ?
No. There are no standart values.
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