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From "Marinko, Jeff" <Jeff_Mari...@intuit.com>
Subject RE: Configuration for High TPS
Date Fri, 09 Aug 2002 18:09:29 GMT
It can do at least 150... :-)

-----Original Message-----
From: Sexton, George [mailto:gsexton@mhsoftware.com]
Sent: Friday, August 09, 2002 11:07 AM
To: Tomcat Users List
Subject: RE: Configuration for High TPS


Can your DNS server handle 200 reverse lookups per second?

-----Original Message-----
From: Marinko, Jeff [mailto:Jeff_Marinko@intuit.com]
Sent: 09 August, 2002 12:04 PM
To: 'Tomcat Users List'
Subject: RE: Configuration for High TPS


I was aware of that, but I thought I might want to leave that on for others
using Tomcat.  I'll turn it off for the tests, thanks.

-----Original Message-----
From: Sexton, George [mailto:gsexton@mhsoftware.com]
Sent: Friday, August 09, 2002 11:01 AM
To: Tomcat Users List
Subject: RE: Configuration for High TPS


You might want to set enableLookups="false". You realize, that's doing a
reverse DNS lookup for every connection don't you?

-----Original Message-----
From: Marinko, Jeff [mailto:Jeff_Marinko@intuit.com]
Sent: 09 August, 2002 11:23 AM
To: Tomcat Users List
Subject: Configuration for High TPS


I'm attempting to configure Tomcat for a test environment to handle a high
number of transactions per second (TPS) and would like any advice others may
like to contribute.  The machine is a fairly powerful dual processor machine
(1+ GHz) running WinNT.  I'm using a tool to send requests, where I can
specify the TPS and number of requests total to send.

I'm running the following with "ok" results, but I'm interested in any
suggestions or better explanations of some of the fields:

<Connector className="org.apache.catalina.connector.http.HttpConnector"
               port="8080" minProcessors="200" maxProcessors="200"
               enableLookups="true" redirectPort="8443"
               acceptCount="2000" debug="0" connectionTimeout="60000"/>

Perhaps my biggest problem is the number of connections Tomcat accepts fills
up rather quickly, some of the connections my tool generates are refused
(presumably due to the acceptCount limit being reached, and I have increased
it a couple times).

Any advice would be appreciated!

Jeff


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