Thanks Levente,

I'll look into that.

Cheers,

Herbert


Am 06.03.2014 16:55, schrieb Levente Uzonyi:
> On Thu, 6 Mar 2014, Herbert König wrote:
>
>> Hi,
>>
>> I run a Squeak image under Cog on a hosted virtual Linux server.
>> Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.201]
>> Unix built on Aug 14 2012 09:25:00 Compiler: 4.1.2 20080704 (Red Hat 
>> 4.1.2-48)
>> platform sources revision VM: r2585
>>
>> Lately I used it for some optimizations running for several days and 
>> the Hoster complained that I create too much IO, my CPU usage being 
>> no problem. I have no idea how I could create IO but it occurs during 
>> my CPU usage. I do no IO I know of.  Only idea I have is accessing 
>> virtual memory. Changes file is 37MB and not growing during the 
>> computations.
>>
>> TOP tells me the image is actually using 60 MB but virtual memory is 
>> 1GB. VM statistics reports 50 MB, 40 MB used. The virtual server has 
>> 512 MB, 200MB free. Nothing else runs on the machine. The server has 
>> no X running I operate Squeak through Tight VNC tunnelled through SSH.
>>
>> Is it possible that Cog frequently tries to access virtual memory 
>> under these circumstances? The system does not slow down compared to 
>> the same calculations on my Windows laptop where I have sufficient 
>> memory.
>>
>> Any ideas of other ways I might involuntarily create the IO load?
>
> IO usually means disk usage, so I don't think this has anything to do 
> with Cog or virtual memory. You can use iostat and iotop to see what's 
> using up IO bandwidth.
>
>
> Levente
>
>>
>> Thanks,
>>
>> Herbert
>>
>>
>
>

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