Re: Potential "AIO / io workers" inter-worker locking issue in PG18?

Andres,

Can you be a bit more specific as to what debug symbols package I need
to install? There is a whole list of them for PG18 when I look with
Synaptic Package Manager...

Or do I simply need to install all PG18 listed debug symbols packages?
It is a very long list though of packages, so I would prefer to limit it
to the packages you think are really useful for your debug work.

And do you have any comments as the command run? If I install the debug
symbols, are the specific commands OK, or do you want other options?

Marco

Op 7-10-2025 om 21:56 schreef Andres Freund:
> Hi,
>
> On 2025-10-07 21:34:00 +0200, Marco Boeringa wrote:
>> I have now been able to successfully run 'perf' after a VM restart and
>> booting with the linux 6.8 kernel.
> Unfortunately the profile is lacking most symbols, so it's not particularly
> informative :(. You probably need to install the debug symbols package for
> postgres (and probably libc)...
>
>
>> Andres: I posted separately to you I had a suspicion a recent linux kernel
>> update (6.8 --> 6.14) might be involved that coincided with the PG18/PostGIS
>> 3.6.0 upgrade when I initially had multiple successful runs of my tool
>> without the temporary stalling / delay in returning of postgres after
>> booting to the older 6.8 kernel. This has now proven wrong: these results
>> are of the 6.8 kernel runs, so the kernel is not involved, and I also see
>> the issue with the older kernel.
> Good to know.
>
> Greetings,
>
> Andres Freund