| From: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
|---|---|
| To: | Melanie Plageman <melanieplageman(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Cc: | Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Subject: | Re: BitmapHeapScan streaming read user and prelim refactoring |
| Date: | 2024-03-14 21:26:28 |
| Message-ID: | 2ed1e06b-feae-4c61-9f58-3fcc358104c7@enterprisedb.com |
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| Lists: | pgsql-hackers |
On 3/14/24 19:16, Melanie Plageman wrote:
> On Thu, Mar 14, 2024 at 03:32:04PM +0200, Heikki Linnakangas wrote:
>> ...
>>
>> Ok, committed that for now. Thanks for looking!
>
> Attached v6 is rebased over your new commit. It also has the "fix" in
> 0010 which moves BitmapAdjustPrefetchIterator() back above
> table_scan_bitmap_next_block(). I've also updated the Streaming Read API
> commit (0013) to Thomas' v7 version from [1]. This has the update that
> we theorize should address some of the regressions in the bitmapheapscan
> streaming read user in 0014.
>
Should I rerun the benchmarks with these new patches, to see if it
really helps with the regressions?
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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