| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | vacuum verbose: show pages marked allvisible/frozen/hintbits |
| Date: | 2020-01-26 14:13:28 |
| Message-ID: | 20200126141328.GP13621@telsasoft.com |
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| Thread: | |
| Lists: | pgsql-hackers |
I'm forking this thread since it's separate topic, and since keeping in a
single branch hasn't made maintaining the patches any easier.
https://www.postgresql.org/message-id/CAMkU%3D1xAyWnwnLGORBOD%3Dpyv%3DccEkDi%3DwKeyhwF%3DgtB7QxLBwQ%40mail.gmail.com
On Sun, Dec 29, 2019 at 01:15:24PM -0500, Jeff Janes wrote:
> Also, I'd appreciate a report on how many hint-bits were set, and how many
> pages were marked all-visible and/or frozen. When I do a manual vacuum, it
> is more often for those purposes than it is for removing removable rows
> (which autovac generally does a good enough job of).
The first patch seems simple enough but the 2nd could use critical review.
| Attachment | Content-Type | Size |
|---|---|---|
| v1-0001-Report-number-of-pages-marked-allvisible-frozen.patch | text/x-diff | 4.3 KB |
| v1-0002-Report-number-of-hint-bits-written.patch | text/x-diff | 4.4 KB |
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