Re: Wrong Display of System CPU Usage

[Martin Pala]

Thanks for the patch :)

It was added to cvs ... Matt's and Alex's problem regarding linux cpu 
usage statistics should be solved.


Martin



Ron Avriel wrote:
> Hi,
>
> On one of my Linux systems monit erroneously reports the system CPU 
> usage as “82.6%us, 0.0%sy, 17.3%wa”, while the system is almost 
> completely idle.
>
> I traced down the problem to /proc/stat reporting CPU times larger than 
> LONG_MAX, while the code assumes they’re (signed) long.
>
> In function used_system_cpu_sysdep() in file process/sysdep_LINUX.c in , 
> changing all “long” variables to “unsigned long long” and changing 
> sscanf %ld to %llu fixed the problem.
>
> BTW, the CPU times monit reads are the sum of all CPUs times, so for a 
> four CPU system the problem occurs after 124 days.
>
>
> Thanks for great product,
> Ron
>
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