Comments on: MySQL 5.1 – Thread Pool Support

By: Venu Anuganti

Venu Anuganti — Fri, 23 May 2008 18:46:10 +0000

Thanks Matthew..Good to know that we already have that; time to read the manual; atleast on new offerings.

By: Matthew Montgomery

Matthew Montgomery — Thu, 22 May 2008 22:30:57 +0000

Venu,

Probably what Mark is talking about is already implemented as the MAX_USER_CONNECTIONS GRANT option.

The MAX_USER_CONNECTIONS count option, implemented in MySQL 5.0.3, limits the maximum number of simultaneous connections that the account can make. If count is 0 (the default), the max_user_connections system variable determines the number of simultaneous connections for the account.

GRANT USAGE ON *.* … WITH MAX_USER_CONNECTIONS N;

You just need to make sure your extension enforces this limit too.

By: Kevin Burton

Kevin Burton — Thu, 22 May 2008 21:27:16 +0000

DO WANT guys….. I’m dying for this feature.

Now all I have to do is migrate to MySQL 5.1

By: Venu Anuganti

Venu Anuganti — Thu, 22 May 2008 20:15:47 +0000

Mark

Do you mean to say limit user X from using maximum of N threads at a time ? that will be ideal.. but wondering whats the syntax..

–max_user_concurrency=N,username ?

By: Mark Callaghan

Mark Callaghan — Thu, 22 May 2008 08:32:34 +0000

Cool. We are backporting this to 5.0 and have a server running with 8000 connections. This is a great feature and something that I really want in a release that I can use in production this year. One extra feature that I want is the ability to limit an account to a max number of concurrent active connections.