[Mongrel] Mongrel_rails memory usage ballooning rapidly

James Tucker jftucker at gmail.com
Wed Jul 22 04:38:00 EDT 2009

200-300MB is not unusual for a rails application.

Is it growing past that?

Maybe use 3 or 4 mongrels, rather than 8.

On 22 Jul 2009, at 09:18, Navneet Aron wrote:

> Hi Folks,
>  I've a rails application in production environment.The rails app  
> has both a website as well as REST apis that are called by mobile  
> devices. It has a apache front end and  8 mongrel_rails running when  
> I start the cluster. Each of them stabalize around 60 MB initially.  
> After that pretty rapidly one or two of the mongrel_rails process's  
> memory usage climbs upto 300 MB (within 30 min). If I leave the  
> system for 2 hours, pretty much all the processes would have reached  
> upwards of 300 MB .  (Also there are times when I can leave the  
> system running pretty much the whole day and memory usage will NOT  
> go upto 300MB).
> The entire site becomes really slow and I've to restart the server.  
> We wanted to profile the app, but we couldn't find a good profiling  
> tool for Ruby 1.8.7
> Can someone please suggest how should we go about troubleshooting  
> this?
> Thanks,
> Navneet
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