From: Noah Misch <noah@leadboat.com>
To: Guillaume Lelarge <guillaume@lelarge.info>
Cc: PostgreSQL Developers <pgsql-hackers@postgresql.org>
Cc: Dr. Michael Meskes <michael.meskes@credativ.com>
Subject: Re: Probable memory leak with ECPG and AIX
Date: Sat, 11 Dec 2021 23:34:11 -0800
Message-ID: <20211212073411.GA2218865@rfd.leadboat.com> (raw)
In-Reply-To: <CAECtzeWMVW=b8=DJje_4F=OG9BeYLh-phLcCxZ-FBpii+O=SBQ@mail.gmail.com>
References: <CAECtzeWMVW=b8=DJje_4F=OG9BeYLh-phLcCxZ-FBpii+O=SBQ@mail.gmail.com>
On Fri, Dec 10, 2021 at 03:40:50PM +0100, Guillaume Lelarge wrote:
> After some time, the client
> crashes with a segfault error. According to him, it consumed around 256MB.
> What's weird is that it works great on Linux, but crashed on AIX.
That almost certainly means he's using a 32-bit binary with the default heap
size. To use more heap on AIX, build 64-bit or override the heap size. For
example, "env LDR_CNTRL=MAXDATA=0x80000000 ./a.out" gives 2GiB of heap. See
https://www.postgresql.org/docs/devel/installation-platform-notes.html#INSTALLATION-NOTES-AIX
for more ways to control heap size. While that documentation focuses on the
server, the same techniques apply to clients like your test program.
That said, I don't know why your test program reaches 256MB on AIX. On
GNU/Linux, it uses a lot less. What version of PostgreSQL provided your
client libraries?
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To: pgsql-hackers@postgresql.org
Cc: noah@leadboat.com, guillaume@lelarge.info, michael.meskes@credativ.com
Subject: Re: Probable memory leak with ECPG and AIX
In-Reply-To: <20211212073411.GA2218865@rfd.leadboat.com>
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