| From: | Filip Rembiałkowski <plk(dot)zuber(at)gmail(dot)com> |
|---|---|
| To: | "Camilo Porto" <camiloporto(at)hotmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: URGENT HELP about 'duration' stats |
| Date: | 2007-10-27 17:12:28 |
| Message-ID: | 92869e660710271012k560de08et84844a6503315520@mail.gmail.com |
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| Lists: | pgsql-hackers |
2007/10/27, Camilo Porto <camiloporto(at)hotmail(dot)com>:
> The parallelism happens even if my PC has only one processor?
PostgreSQL creates a separate process for each client connection -
whether you have one CPU or more.
> Each query is executed in a separeted Thread?
No threads, at least on Unix. Regular processes (sometimes called backends).
> I am simulating only 1 client with the Benchmark. Can 1 Client submit
> parallel queries, in single-processor enviroment?
If this client uses two connections, you can run two queries in paralell.
this chapter of documentation can be helpful:
http://www.postgresql.org/docs/8.2/static/overview.html
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