[erlang-questions] erlang:exit/1 eats lots of CPU time

Mazen Harake <>
Tue Jan 5 14:42:27 CET 2010


Hi,

I think what Jayson is trying to say is:

How long is "total CPU time"? 1 microsecond or 10 hours or somewhere in 
between?

R,
/M

On 05/01/2010 14:04, Maxim Treskin wrote:
> Yes. This process consumes 12% of total CPU time. erlang:exit/1
> consumes 99% of 12% of total CPU time. Whole system contains several
> such processes which eats CPU on exit.
>
> 2010/1/5 Jayson Vantuyl<>:
>    
>> What's the total time here?  I see that erlang:exit/1 is 99% of that process's time, and that process is 12% of total time, but how long are we talking about here?  I've seen results like that for short tests in a tight loop.  So, it's 99% of 12% of what?
>>
>> On Jan 4, 2010, at 10:02 PM, Maxim Treskin wrote:
>>
>>      
>>> Hello
>>>
>>> I have tested software with Eprof. eprof:analyse() prints log which
>>> contains following strings:
>>>
>>> ****** Process<0.229.0>      -- 12 % of profiled time ***
>>> erlang:exit/1                                  1          99 %
>>>
>>> Erlang node whith this process really eats CPU time, so it is not a
>>> some bug of eprof. May be it is due to garbage collection of process
>>> data on exit? Increasing of min_heap_size up to value which really
>>> used by process has no effect.
>>>
>>> How I can decrease CPU time consumption on exit for this process?
>>>
>>> Thank you
>>>
>>> --
>>> Maxim Treskin
>>>
>>> ________________________________________________________________
>>> erlang-questions mailing list. See http://www.erlang.org/faq.html
>>> erlang-questions (at) erlang.org
>>>
>>>        
>>
>>      
>
>
>    



More information about the erlang-questions mailing list