| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | mohini mane <mohini(dot)android(at)gmail(dot)com> |
| Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Parallel hints in PostgreSQL with consistent perfromance |
| Date: | 2024-01-02 16:14:37 |
| Message-ID: | CAKFQuwbsz5mdyK7d6KM=yQFeSNYRkkiqHzPxd_kp5U7Lz4g4Kw@mail.gmail.com |
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| Lists: | pgsql-performance |
On Tue, Jan 2, 2024 at 8:12 AM mohini mane <mohini(dot)android(at)gmail(dot)com> wrote:
>
> I have executed the SELECT query with 2,4 & 6 parallel degree however
>>> every time only 4 workers launched & there was a slight increase in
>>> Execution time as well,
>>>
>>
>> Adding an ignored comment to your SQL would not be expected to do
>> anything. So it is not surprising that it does not do anything about
>> the number of workers launched. It is just a comment. A note to the human
>> who is reading the code.
>> * >> As I am using ph_hint_plan extension so as expected hints should not
>> get ignored by the optimizer .*
>>
>
Sounds like a bug you should go tell the pg_hint_plan authors about then.
David J.
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