# Application hanging in production! New Relic Phy Mem Utilization Haywire! Help!

**URL:** <https://www.ruby-forum.com/t/application-hanging-in-production-new-relic-phy-mem-utilization-haywire-help/170025>\
**Category:** Rails\
**Created:** [June 11, 2009, 1:45pm UTC](https://www.ruby-forum.com/t/application-hanging-in-production-new-relic-phy-mem-utilization-haywire-help/170025 "2009-06-11T13:45:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ram](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/b9bd4f/32.png) [@ram](https://www.ruby-forum.com/u/ram)\
**Post date:** [June 11, 2009, 1:45pm UTC](https://www.ruby-forum.com/t/application-hanging-in-production-new-relic-phy-mem-utilization-haywire-help/170025/1 "2009-06-11T13:45:37Z")

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Hi all,

My app was doing fairly well in production past couple a months. But  
past 2 days, its gone off its rocker! Not able to figure out what the  
problem is. The symptoms are as follows…

- It first went down when I deployed and ran a migration yesterday. A  
simple column addition to a table
- The production log showed the SignalException::SIGTERM error ( dont  
know anything about it )
- a server reboot seems to solve the problem temporarily
- New Relic RPM shows wayward physical mem utilization.
- im on Slicehost and the ‘free’ command shows way too much SWAP  
memory usage (which is basically not good)

Does it sound like im having a memory leak? anywhere i could look?  
anything i can do??  
Oh those who have fought the battle and come out victorious… bestow  
upon me ur knowledge! 😃  
Seriously… any pointers?

Thanks!

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<div class="post-metadata">

**Author:** ![ram](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/b9bd4f/32.png) [@ram](https://www.ruby-forum.com/u/ram)\
**Post date:** [June 11, 2009, 2:04pm UTC](https://www.ruby-forum.com/t/application-hanging-in-production-new-relic-phy-mem-utilization-haywire-help/170025/2 "2009-06-11T14:04:21Z")

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Hey blasterpal,  
already on it!  
more information in case u can help. I run a cron on my server which  
basically accesses a particular URL in my Rails app which performs  
some tasks. it seems to take loads of time… and when i drill down in  
New Relic, the following line is thrown up…

Dependencies.new\_constants\_in(Object) { super }

this is a line from active\_support

File: /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/  
active\_support/dependencies.rb

i saw a couple of error throws caused due to dependency loading from  
active\_support in my production log earlier yesterday during initial  
analysis.

Any more ideas?

- Hide quoted text -

On Thu, Jun 11, 2009 at 5:26 PM, blasterpal [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Ram,
> 
> I’ve gotten burned recently with production issues not related to  
> yours. But I only want to add the following. Rollback your changes and  
> see if the problem disappears for a few days. If so, then you know  
> where to start looking: at your new code and how it interacts with the  
> database, Rails ,etc.
> 
> H