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Re: valgrind a background worker

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On Fri, Feb 10, 2023 at 10:04 AM Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
>
> =?UTF-8?Q?Jon_Erdman?= <jon@xxxxxxxxxxxxxxxxxx> writes:
> > I've got a background worker that has a slow memory leak in it
> > somewhere. How can I get it to start under valgrind to get a memcheck
> > output from it?
>
> 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.

Jeff





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