[pgpool-general: 107] Re: severe memory leak in 3.1.1

[Tatsuo Ishii]

> Greetings,
> I'm running pgpool-3.1.1 on a Linux-x86_64 system with 8GB RAM and
> 2.5GB swap.  Ever since we upgraded from pgpool-3.0.3 to 3.0.4, we've
> seen a severe memory leak which consistently consumes all the RAM+swap
> on the system every 4-7 days.  The leak is so severe that sometimes
> the OOM killer cannot respond fast enough, and the entire server had
> locked up one time (with OOM killer spew on the local console).  We're
> confident that the leak is in pgpool, as if we stop and (re)start
> pgpool, all the memory in use is freed up immediately.
> 
> We were hoping that upgrading to 3.1.1 would eliminate the problem,
> however we upgraded to 3.1.1 last Thursday, and as of this morning its
> obvious that the leak is still present.  Please advise what kind of
> information we can provide to debug this problem.

Self contained test case is the best way to tuckle the problem. Can
you please provide?
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp