Re: WIP: WAL prefetch (another approach)

On 11/26/21 22:16, Thomas Munro wrote:
> On Fri, Nov 26, 2021 at 11:32 AM Tomas Vondra
> <tomas.vondra@enterprisedb.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.
> 

One thing that's not clear to me is what happened to the reasons why 
this feature was reverted in the PG14 cycle?

regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company