On 4/24/23 6:14 PM, Andres Freund wrote:
Hi,
On 2023-04-24 10:52:15 +0530, Amit Kapila wrote:
On Sun, Apr 23, 2023 at 12:55 AM Jonathan S. Katz <jk...@postgresql.org> wrote:
I wonder if it's
worth doing so for 16? It'd give a more complete picture that way. The
counter-argument I see is that we didn't track the time for it in existing
stats either, and that nobody complained - but I suspect that's mostly because
nobody knew to look.
[RMT hat]
(sorry for slow reply on this, I've been out for a few days).
It does sound generally helpful to track writeback to ensure anyone
building around pg_stat_io can see tthe more granular picture. How big
of an effort is this?
Right, I think this is the key factor to decide whether we can get
this in PG16 or not. If this is just adding a new column and a few
existing stats update calls then it should be okay to get in but if
this requires some more complex work then we can probably update the
docs.
I suspect it should really just be adding a few stats calls. The only possible
complication that I can see is that we might need to pass a bit more context
down in a place or two.
OK. So far it sounds reasonable to include. I think we should add this
as an open item. I don't know if we need to set a deadline just yet, but
we should try to keep go/nogo to earlier in the beta cycle.
Thanks,
Jonathan
