From: Nobuyoshi Nakada <nobu@...>
Date: 2008-08-20T11:50:16+09:00
Subject: [ruby-core:18350] [Bug:1.8] Re: Hard question: Any ideas why this code leaks memory?

Hi,

At Wed, 20 Aug 2008 04:46:24 +0900,
Sven C. Koehler wrote in [ruby-talk:311847]:
> could someone help me understand why this code leaks memory? (I am using
> ruby 1.8.6 (2007-12-03 patchlevel 113) [x86_64-linux].)
> 
> def rss_leaks
>   /^VmRSS:\s+(\d+)/m.match(File.open("/proc/#{$$}/status") {|f| 
>       f.read })[1].to_i
> end

> Calling GC.start inbetween does not help, but when we rewrote rss_leaks
> this way the leaks disappeared:
> 
> def rss_no_leaks()
>    d = File.open("/proc/#{$$}/status") {|f| f.read }
>    /^VmRSS:\s+(\d+)/m.match(d)[1].to_i
> end

Seems a bug.

-- 
Nobu Nakada