| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Rushabh Lathia <rushabh(dot)lathia(at)gmail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Gather Merge |
| Date: | 2017-01-17 13:14:59 |
| Message-ID: | CAA4eK1KVqFhdkaajivA0tONN_m0wZE3qFtR_w6VK8tAPLOCToA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Jan 17, 2017 at 5:19 PM, Rushabh Lathia
<rushabh(dot)lathia(at)gmail(dot)com> wrote:
>
>
>
> Here is the benchmark number which I got with the latest (v6) patch:
>
> - max_worker_processes = DEFAULT (8)
> - max_parallel_workers_per_gather = 4
> - Cold cache environment is ensured. With every query execution - server is
> stopped and also OS caches were dropped.
> - The reported values of execution time (in ms) is median of 3 executions.
> - power2 machine with 512GB of RAM
> - With default postgres.conf
>
You haven't mentioned scale factor used in these tests.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
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