Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Gaetano Mendola
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tom Lane wrote: | Gaetano Mendola <[EMAIL PROTECTED]> writes: | |>I did last week an Ariadne+Postgresql valutation for the company where I work |>and I learned that |>with 250 MB you can open up to 80 concurrent query |>with 500 MB you can open up to 1

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Tom Lane
Gaetano Mendola <[EMAIL PROTECTED]> writes: > I did last week an Ariadne+Postgresql valutation for the company where I work > and I learned that > with 250 MB you can open up to 80 concurrent query > with 500 MB you can open up to 120 concurrent query > from now on for each 250MB you can have ~40

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Gaetano Mendola
Tom Lane wrote: Michal Taborsky <[EMAIL PROTECTED]> writes: Peter Eisentraut wrote: Is there any practical limit on the number of parallel connections that a PostgreSQL server can service? We're in the process of setting up a system that will require up to 1 connections open in parallel. Th

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Christopher Browne
Centuries ago, Nostradamus foresaw when [EMAIL PROTECTED] (Peter Eisentraut) would write: > Is there any practical limit on the number of parallel connections that a > PostgreSQL server can service? We're in the process of setting up a system > that will require up to 1 connections open in

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Csaba Nagy
[snip] > requests, it only saves connection start effort. (You could make the > connection pool server queue the requests, but that is not the point of this > exercise.) I didn't quite consider the RAM question, but the machine is [snip] Well, I would disagree here. If the connections are not

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Ben
Really, this seems like it would be a pretty strong case for a replicated database. assuming not all 1 clients will need to be doing modifications. Or if they do, that they could open up a seperate, temporary connection with the master db. On Aug 16, 2004, at 7:37 AM, Peter Eisentraut w

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Tom Lane
Michal Taborsky <[EMAIL PROTECTED]> writes: > Peter Eisentraut wrote: >> Is there any practical limit on the number of parallel connections that a >> PostgreSQL server can service? We're in the process of setting up a system >> that will require up to 1 connections open in parallel. The que

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Peter Eisentraut
Am Montag, 16. August 2004 16:20 schrieb Csaba Nagy: > Peter is definitely not a newby on this list, so i'm sure he already > thought about some kind of pooling if applicable... but then I'm > dead-curious what kind of application could possibly rule out connection > pooling even if it means so man

Re: [GENERAL] Thousands of parallel connections

2004-08-16 Thread Csaba Nagy
Hi guys, Peter is definitely not a newby on this list, so i'm sure he already thought about some kind of pooling if applicable... but then I'm dead-curious what kind of application could possibly rule out connection pooling even if it means so many open connections ? Please give us some light Pete