Re: Out of Memory errors are frustrating as heck! - Mailing list pgsql-performance

From Justin Pryzby
Subject Re: Out of Memory errors are frustrating as heck!
Date
Msg-id 20190421080822.GB14223@telsasoft.com
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In response to Re: Out of Memory errors are frustrating as heck!  (Gunther <raj@gusw.net>)
Responses Re: Out of Memory errors are frustrating as heck!
Re: Out of Memory errors are frustrating as heck!
List pgsql-performance
On Sun, Apr 21, 2019 at 01:03:50AM -0400, Gunther wrote:
> On 4/20/2019 21:14, Tomas Vondra wrote:
> >Maybe. But before wasting any more time on the memory leak investigation,
> >I suggest you first try the patch moving the BufFile allocations to a
> >separate context. That'll either confirm or disprove the theory.
> 
> OK, fair enough. So, first patch 0001-* applied, recompiled and
> 
> 2019-04-21 04:08:04.364 UTC [11304] LOG:  server process (PID 11313) was terminated by signal 11: Segmentation fault
...
> turns out the MemoryContext is NULL:
> 
> (gdb) p context
> $1 = (MemoryContext) 0x0

I updated Tomas' patch to unconditionally set the context.
(Note, oldctx vs oldcxt is fairly subtle but I think deliberate?)

Justin

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