[MTOS-dev] Check your perl module versions now

[Steve Ivy]

Thanks for the reminder, Jay. This should be a note on hacking.mt.org.

On Tue, Apr 22, 2008 at 1:18 PM, Jay Allen <jay at endevver.com> wrote:
> Hi all,
>
>  Yesterday I observed a pretty significant memory leak occurring on
>  movabletype.org when the run-periodic-tasks framework was being used
>  in daemon mode to initiate background publishing.  Reed and Su
>  reminded me of Ogawa-san bootstrapping script[1] which uses
>  Devel::Leak::Object to monitor all objects for memory leaks.  So, I
>  used the same methodology on RPT as Hirotaka did on mt.cgi.  What I
>  found was not what I expected: DBI had a massive memory leak.
>
>  I immediately checked the version and found it to be the same one
>  available to 'yum': 1.48  Unfortunately, that is NOT the latest in
>  CPAN[2] (1.604) and in fact v1.48 was release more than THREE YEARS
>  AGO.  Once I installed the new version, RPT worked perfectly without a
>  single memory leak.   You should make sure that you are running AT
>  LEAST version 1.52[3] since that was the most recent version
>  mentioning fixes for memory leaks.
>
>  Along the way, however, I found other modules which were outdated on
>  yum and upgraded those as well.  It goes without saying but I'll say
>  it anyway: Keeping your infrastructure upgraded will pay off major
>  short-term and long-term gains.  Do not ignore it.
>
>  --
>  Jay Allen
>  Endevver Consulting
>  415-200-6985
>
>  [1] - http://www.sixapart.com/pipermail/mtos-dev/2008-March/000735.html
>  [2] - http://search.cpan.org/~timb/DBI/Changes
>  [3] - http://search.cpan.org/~timb/DBI/Changes#Changes_in_DBI_1.52_(svn_rev_6840),_30th_July_2006
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-- 
Steve Ivy
http://redmonk.net // http://diso-project.org
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