Re: Probable memory leak with ECPG and AIX - Mailing list pgsql-hackers

From Guillaume Lelarge
Subject Re: Probable memory leak with ECPG and AIX
Date
Msg-id CAECtzeXYvZwNUprdE2FTGmM9MG67vzdG9MOpnaYZw6fhk1j3=w@mail.gmail.com
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In response to Re: Probable memory leak with ECPG and AIX  (Justin Pryzby <pryzby@telsasoft.com>)
List pgsql-hackers
Le sam. 11 déc. 2021 à 07:52, Justin Pryzby <pryzby@telsasoft.com> a écrit :
On Fri, Dec 10, 2021 at 03:40:50PM +0100, Guillaume Lelarge wrote:
> Hello,
>
> Our customer thinks he has found a memory leak on ECPG and AIX.
>
> The code is quite simple. It declares a cursor, opens it, and fetches the
> only line available in the table many times. 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. One
> coworker thought it could be the compiler. Our customer used cc, but he
> also tried with gcc, and got the same error.

A memory leak isn't the same as a segfault (although I don't know how AIX
responds to OOM).

Can you show that it's a memory leak ?  Show RAM use increasing continuously
and linearly with loop count.

How many loops does it take to crash ?

Could you obtain a backtrace ?


Thanks. I'll try to get all these informations, but it won't be before monday.


--
Guillaume.

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