Thanks Scott
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:
Hello
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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Riccardo Cohen
+33 (0)6 09 83 64 49
Société Realty-Property.com
16 rue de Belle Isle
37100 Tours
France
http://www.appartement-maison.fr
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