From: Pete Hodgson <ruby-forum@...>
Date: 2009-05-09T05:49:04+09:00
Subject: Re: Ruby memory usage


Thanks so much for all the input folks, it's really really appreciated.

ruby -v gives:
ruby 1.8.6 (2008-06-20 patchlevel 230) [i386-linux]


I did some additional tweaks to the memory profiler, and it now dumps a 
yaml document with object space details every 10 seconds. I did some 
analysis on discovered that:

- Virtual memory grows in a straight line serially over time
- Resident memory grows up to a point, then start fluctuating. I'm 
presuming that's the kernel starting to reclaim resident memory from the 
process as it starts to run out of physical memory.
- Object counts stay almost entirely flat over time.

At this point I wonder whether the issue is with the MRI GC, as Tony 
mentioned. I'm a little leary of upgrading to 1.9 just in order to fix 
this, but I might give it a try just to see what the memory usage over 
time looks like compared to 1.8.6.
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