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Re: valgrind a background worker

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On 2/10/23 9:08 PM, Jon Erdman wrote:
> On 2/10/23 3:05 PM, Tom Lane wrote:
>> Jeffrey Walton <noloader@xxxxxxxxx> writes:
>>> On Fri, Feb 10, 2023 at 10:04 AM Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
>>>> You have to valgrind the whole cluster AFAIK.  Basically, start
>>>> the postmaster under valgrind with --trace-children=yes.
>>>> For leak tracking you probably also want
>>>> --leak-check=full --track-origins=yes --read-var-info=yes
>>
>>> One additional comment... the program in question and PostgreSQL
>>> should also be built with -g -O1 per
>>> https://valgrind.org/docs/manual/quick-start.html . Otherwise, there's
>>> a risk the line information will not be accurate or usable.
>>
>> Yeah.  Also, you need to compile Postgres with -DUSE_VALGRIND
>> if you want valgrind to have any idea about palloc/pfree.
> 
> Thanks much both of you! I'll report back how it goes ;)

FYI folks: once I got the build done properly (valgrind brew wouldn't 
install on OSX) on linux, I was able to find and fix my leaks. They were 
from not calling pfree on StringInfo.data.
-- 
Jon Erdman (aka StuckMojo)
      PostgreSQL Zealot







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