On Fri, 16 Dec 2022 at 04:47, Bagga, Rishu <bagrishu@amazon.com> wrote:
> Rebased and updated a new patch addressing the critical section issue in
> RecordNewMultliXact.In GetNewMultiXactId, we now make our ReadBuffer
> calls before starting the critical section, but while holding the
> MultiXactGenLock, so we always fetch the correct buffers. We store them
> in an array that is accessed later in RecordNewMultiXact.
> This way we can keep the existing functionality of only holding the MultiXactGenLock while reading in buffers, but
canlet go when we are writing,
> to preserve the existing concurrency paradigm.
> Let me know your thoughts on this approach.
>
The patch does not apply on top of HEAD as in [1], please post a rebased patch:
=== Applying patches on top of PostgreSQL commit ID
92957ed98c5c565362ce665266132a7f08f6b0c0 ===
=== applying patch ./slru_to_buffer_cache_with_page_headers_v3.patch
...
patching file src/include/catalog/catversion.h
Hunk #1 FAILED at 57.
1 out of 1 hunk FAILED -- saving rejects to file
src/include/catalog/catversion.h.rej
[1] - http://cfbot.cputube.org/patch_41_3514.log
Regards,
Vignesh
