From: "Shot (Piotr Szotkowski)" <shot@...>
Date: 2008-02-14T04:01:35+09:00
Subject: Memory leaks with ruby-prof 0.6.0 on Ruby 1.9

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Hello, good folks of ruby-talk.

I=E2=80=99m running into memory leaking issues when trying to profile my
code with ruby-prof 0.6.0 on Ruby 1.9. Two scenarios, in which 1.8
is Ubuntu=E2=80=99s packaged Ruby 1.8.6.p111, while 1.9 is hand-compiled
Ruby 1.9.0.r14709. ruby-prof 0.6.0 from RubyGems in both cases.
Memory usage reported with the proprietary, highly scientific method
of Looking at Live Htop Changes in Memory Usage for the Whole System=E2=84=
=A2.
Times are time=E2=80=99s real/user, the ruby-prof=E2=80=99s printer is grap=
h_html.

Ruby 1.8:
* the code ran with plain Ruby executes in 1m41s/1m22s,
  the memory consumption stays below 300 MiB.
* the code ran with ruby-prof executes in 4m35s/2m49s,
  the memory consumption stays below 320 MiB.

Ruby 1.9:
* the code ran with plain Ruby executes in 0m30s/0m30s,
  the memory consumption stays below 310 MiB.
* the code ran with ruby-prof executes in=E2=80=A6 well, I stopped the exec=
ution
  when the memory consumption passed my laptop=E2=80=99s 1 GiB and made
  a 350 MiB dent at my temp partition.

Are there any known memory issues with ruby-prof 0.6.0 on Ruby 1.9?

Unfortunately, the code under profiling being the code behind my PhD,
I can=E2=80=99t currently open source it (I will once my research is comple=
te);
I can send it to people off-list (provided it doesn=E2=80=99t get shared
further).

Thanks in advance for any comments/ideas.

-- Shot
--=20
When I do it, it's development. When you do it, it's coding.
When he does it, it's mindless hacking.      -- Paul Tomblin

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