Th30z - Coding on the Fly » Linux http://th30z.netsons.org Matteo Bertozzi, Objective-C, Cocoa, C, C++, Qt4, iPhone, Mac OS X, Open Moko, Matteo Bertozzi Development Tue, 23 Feb 2010 20:51:12 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 I Scheduler… http://th30z.netsons.org/2008/10/i-scheduler/ http://th30z.netsons.org/2008/10/i-scheduler/#comments Fri, 31 Oct 2008 16:20:21 +0000 Matteo Bertozzi http://th30z.netsons.org/?p=240 In these days at work we’ve some trouble with a very slow PostgreSql Server… We need something like a Thread Pool.. but we couln’t modify the Server that call Postgres.
My Idea, that increase, in our case, more than 50% the response speed is to “limit” the postgres (postmaster for 7.4) instances.

This morning i’ve writed this PsLimit Source that do my “Scheduler” Job.

Usage:

pslimit <process name> <max number of instances>

Usage Example:

  • Only 3 instances of postgres can run at the same time, the other will be queued
    • pslimit postgres 3 (Postgres 8.x)
    • pslimit postmaster 3  (Postgres 7.x)
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