java performance w2k vs NT4

From: Bastien Raich (sraich_at_clj.co.jp)
Date: 11/20/03 

Date: 19 Nov 2003 21:45:50 -0800

Hello,

I've been developping a Java application using sun's 1.4.1 on my NT4
box.

It's a financial application that retrieves market data in real time,
displays it in JTables, do some computations, and from which you can
also open small dialogs to send orders to the market... client /
server based (but not Java connection, it's a simple socket
connection)

my clients have been running NT4 for some time, and we recently
decided to migrate to windows 2000. after all I had read about java
portability and performances of w2k vs NT, I just quickly checked the
app was starting up, and started the migration.

however after we finished the first PC and ran it the next day in
production, we realized everything was REALLY slow. I mean MUCH slower
than on the other PCs still running NT4. I could not tell for sure (my
users are remote), but CPU usage seems to be more intensive on the w2k
box.

another interesting thing was that things are REALLY slow with jre
1.4.2 and 1.4.1, but "quite ok, although slower" with jre 1.4.0 .

I am really puzzled... the machines used are of pretty similar specs.

so do you know of any perf. issue between those two OSes ?
any specific code I should pay more attention to ?
any known problem with w2k ? I searched the NG & knowledge bases with
no success...

thanks to share your knowledge !

--Bastien

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