Re: Persistent connections or no? Please help, server getting hammer ed.

From: Date: Mon, 27 Nov 2000 19:51:09 +0000
Subject: Re: Persistent connections or no? Please help, server getting hammer ed.
References: 1  Groups: php.general 
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Hi! First of all: Not persistant connections persisting during the whole request, that means php connects only one time per page call and that request serves all your 100 sql-queries. Persistant-connections will not be closed after the script aborts! I made the experience not to use persistent SQL-connections. I'm using an extra Server for mySQL wich has 384MB RAM but despite i had so much opened mysqld's that the system have had to swap! Btw.: It was an forum with about 20 connections/second ! The forum has more than 100.000 postings! So disable mysql_pconnect and one more tip for mySQLd: set-variable = wait_timeout=120 especially when using pconnect! because connections have a timeout of several hours as default! And that connections are "eating" your ram. regards Folke -- Folke Ashberg Stage Internet Services GmbH Technical Development folke@fanstage.de folke@fanstage.de | Tel: +49 89 454591-77 | Fax: +49 89 454591-71 Kreillerstr. 21 | 81673 Munich | Germany | www.fanstage.de On Mon, 27 Nov 2000, Chad Day wrote: > I got linked by a popular site today and am getting positively hammered by > connections. > > I was using persistent connections, as it's a fairly simple database that is > going to get a lot of traffic.. each user views a page with a database > connection required on it about 100 times per user session, so I thought > persistent would be the way to go to cut down on the overhead.. problem is I > got a lot of lingering connections around.. not sure if I should lower > mysql's wait timeout, or if I should be using regular connects and closes > constantly. > > Chad Day > Beach Associates > > When I speak german... I think german in my head... but like...Do skript > kiddies see a w40l3 8uncha 1's and 0's and 3's and 4's and 7's in their > h34d'5 w43n t43y R +a1k1n6 ? -- SirStanley > > >

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