# Memory leak?

**URL:** <https://www.ruby-forum.com/t/memory-leak/123334>\
**Category:** Ruby\
**Created:** [December 16, 2007, 6:10pm UTC](https://www.ruby-forum.com/t/memory-leak/123334 "2007-12-16T18:10:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Bil\_K](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/848f3c/32.png) [@Bil\_K](https://www.ruby-forum.com/u/Bil_K)\
**Post date:** [December 16, 2007, 6:10pm UTC](https://www.ruby-forum.com/t/memory-leak/123334/1 "2007-12-16T18:10:46Z")

</div>

Hi,

Does anyone see anything here,

for case\_number in 1…NUMBER\_OF\_CASES  
case\_dir = File.join( ‘Cases’, ‘Case’ ) +  
case\_number.to\_s.rjust(5,“0”)  
mkdir\_p case\_dir  
ln\_sf LINK\_FILES, case\_dir unless LINK\_FILES.empty?  
cp COPY\_FILES, case\_dir unless COPY\_FILES.empty?  
cd case\_dir do  
fuzzy\_contents.each do |original\_name, fuzzy\_content|  
File.open(original\_name,‘w’){ |f| f.puts fuzzy\_content.sample }  
end  
end  
$stdout.print ‘.’; $stdout.flush  
end

that should cause a steady growth in memory?

It works fine for 5,000 cases; but by about 10,000 cases,  
the process exceeds 2GB!

Thanks,

---

<div class="post-metadata">

**Author:** ![Bil\_K](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/848f3c/32.png) [@Bil\_K](https://www.ruby-forum.com/u/Bil_K)\
**Post date:** [December 17, 2007, 11:18am UTC](https://www.ruby-forum.com/t/memory-leak/123334/2 "2007-12-17T11:18:45Z")

</div>

Bil K. wrote:

> Does anyone see anything here,
> 
> […]
> 
> that should cause a steady growth in memory?
> 
> It works fine for 5,000 cases; but by about 10,000 cases,  
> the process exceeds 2GB!

Doh! Nevermind, fuzzy\_content.sample contains an array push:

```
(@fields[tag] ||= []) << sample

```

I guess it is time to look at persisting to the file system  
instead of storing everything in memory…

Later,