| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
| Cc: | Daniel Gustafsson <daniel(at)yesql(dot)se>, Stephen Frost <sfrost(at)snowman(dot)net>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, David Steele <david(at)pgmasters(dot)net>, Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Jakub Wartak <Jakub(dot)Wartak(at)tomtom(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: WAL prefetch (another approach) |
| Date: | 2021-11-26 21:16:33 |
| Message-ID: | CA+hUKG+NRzF7qPdjrJg3OqvfFO-yFCLLTUB9wmVH71zbki3G1Q@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Fri, Nov 26, 2021 at 11:32 AM Tomas Vondra
<tomas(dot)vondra(at)enterprisedb(dot)com> wrote:
> The results are pretty good / similar to previous results. Replaying the
> 1h worth of work on a smaller machine takes ~5:30h without prefetching
> (master or with prefetching disabled). With prefetching enabled this
> drops to ~2h (default config) and ~1h (with tuning).
Thanks for testing! Wow, that's a nice graph.
This has bit-rotted already due to Robert's work on ripping out
globals, so I'll post a rebase early next week, and incorporate your
code feedback.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Justin Pryzby | 2021-11-26 21:16:36 | Re: pg_stat_bgwriter.buffers_backend is pretty meaningless (and more?) |
| Previous Message | Peter Geoghegan | 2021-11-26 20:37:32 | Unifying VACUUM VERBOSE and log_autovacuum_min_duration output |