[pgpool-general: 108] Re: severe memory leak in 3.1.1

[Lonni J Friedman]

On Wed, Dec 21, 2011 at 7:39 AM, Tatsuo Ishii <ishii at postgresql.org> wrote:
>> 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?

I'm afraid that I don't know what is causing this.  I'm going to need
your assistance here.