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From "gimme change" <>
Subject RE: Hyperthreading performance dead !
Date Thu, 26 Feb 2004 13:11:16 GMT

I use tomcat 4.1.18 with sun 1.4.2_03 jdk, and the ht performance is much worse.  I am using
mod_jk 1.3 also.

 --- On Thu 02/26, Ralph Einfeldt < > wrote:
From: Ralph Einfeldt [mailto:]
Date: Thu, 26 Feb 2004 13:49:22 +0100
Subject: RE: Hyperthreading performance dead !

<br>Wether tomcat works on Hyperthreading PC's depends mainly on the <br>underlying
jvm and the operating system. If these do a good job <br>in an ht environment, tomcat
will use the benefits as it is highly <br>multithreaded.<br><br>The only
part of tomcat that might directly use HT is the mod_jk[2] <br>connector. (Don't know
if it actually does)<br><br>> -----Original Message-----<br>> From: []<br>> Sent: Thursday, February
26, 2004 1:30 PM<br>> To:<br>> Subject: Hyperthreading
performance dead !<br>> <br>> <br>> I've been testing my Java app
in Tomcat on a Hyperthreading Dell PC -<br>> identical to current production dell
bar HT. The app runs <br>> more than 20x as<br>> slow compared with existing
system. There is no difference at <br>> all hardware / software apart from HT.<br>>
<br>> Does Tomcat work on Hyperthreading PC's / any1 else had & solved this<br>>
problem ??<br>> <br><br>---------------------------------------------------------------------<br>To
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