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Interesting, thanks for the information.

My only concern with a 32 bit architecture, is that my memory usage may
legitimately grow above 2G which would toast the puppetmaster process
pretty quickly.

Thanks,

Trevor

On 08/13/2009 05:53 PM, Brice Figureau wrote:
> On 13/08/09 22:36, Trevor Vaughan wrote:
>> All,
>>
>> I'm trying to figure out the best way to estimate the amount of memory
>> usage that will be taken up by Mongrel and I'm hoping that you have
>> some estimates that can help me.
>>
>> I'm currently estimating the following:
>>
>> Memory Required = Number of running puppetmasters * size of manifests
>> * number of clients managed
> 
> In 0.24, what cost the most is the file transfer, hopefully 0.25 is 
> waaay better in this respect.
> 
>> The mongrel model doesn't seem to *ever* reclaim memory.
> 
> My master don't grow, but they're not really under load.
> One of the issue with MRI, is that if your master are constantly under 
> load the ruby garbage collector never really start, and thus memory is 
> not reclaimed.
> 
>> Suggestions on reclaiming memory welcome though I'm sure most people
>> will just urge me to move to Passenger.
> 
> Make sure you're using a recent ruby. It is known that some older ruby 
> version are leaking memory.
> 
> I can't comment on Passenger since I never tried it. But in the near 
> future (understand when I'll have some spare cycle) you'll have another 
> promising alternative: Puppet on JRuby on Glassfish.
> I was able to run this stack in the lab, and limited testing show that 
> it was at least 30% faster than using mongrel. For the memory part, I 
> didn't check, but the JVM has a superior garbage collector than the ruby 
> one. I really expect some memory gains, just because you'll be running 
> only one process...
> 
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