Next time I'll do "mpstat -P ALL" to have detail information on each core.
On 22/10/13 18:52, Scott Ferguson wrote:
> On 10/22/13 1:06 AM, Riccardo Cohen wrote:
>> I run some process on a server (debian 6.0.7 - 64b - 4 cores), that read
>> files and insert data into db. When running "top" tool I have 60% to 90%
>> processor idle. The rest is mainly iowait which seems natural since the
>> disk is working a lot in this process (through file read and mysql write).
>> Resin Pro 4.0.13 is running and answering http requests in the same
>> time. During this process, Resin shows some warnings in the log :
>> CpuHealthCheck: WARNING: cpu1=99%
>> I don't understand, since top show that processor is mainly idle.
>> Can someone help me explain this please ? Is there another way to
>> control CPU, more precise than top ?
> top and Resin should be measuring the same thing. Both are looking at
> the /proc filesystem for CPU counts. Resin averages over its 60s
> interval, so a cpu showing 99% over 60s is a busy cpu.
> Normally, I believe top reports the average across all the CPUs. So if
> you had a single CPU that was very busy, Resin might report that
> warning, even though it's expected.
> -- Scott
>> Thanks a lot.
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