We use a lower end NT machine (PII 300 MHz w/128MB RAM) for testing
out applications. The performance is generally slower than higher end
machines, but its acceptable for a small number of users. (The reason we do
this is to make finding bottlenecks easier - it there are fewer
One common misconception that people seem to have about Tomcat (and
application servers in general) is that you can predict how well an
application will perform on that server without any real details of the
application, but exact hardware details.
For almost all applications
Hi Randy,
Thank you for your reply.
One common misconception that people seem to have about Tomcat (and
application servers in general) is that you can predict how well an
application will perform on that server without any real details of the
application, but exact hardware details.
I
--- Brown Bay [EMAIL PROTECTED] wrote:
My best advice is for you to try it out. Set up a
load test and
see. One potential bottleneck you didn't mention,
by the way, is your
bandwidth between you and your users - this can
also limit the number of
transactions (which is a rather
We have been running over 10 instances of tomcat on one maschine
in an complete J2EE environment with a very good performance.
I would also be interested in loadbalancing of 2+ physically different
systems.
moritz
Brown Bay wrote:
I have a system that is currently running on Websphere and
Subject: Re: Tomcat Performance
We have been running over 10 instances of tomcat on one maschine
in an complete J2EE environment with a very good performance.
I would also be interested in loadbalancing of 2+ physically different
systems.
moritz
Brown Bay wrote:
I have a system
Users List [EMAIL PROTECTED]
Sent: Wednesday, January 09, 2002 9:22 AM
Subject: Re: Tomcat Performance
We have been running over 10 instances of tomcat on one maschine
in an complete J2EE environment with a very good performance.
I would also be interested in loadbalancing of 2
Tom Drake and myself are working on a real cluster solution for tomcat,
but
we haven't released code so far, it will rather take some months before it
could be recommended to use it.
That is cool. What will be used to store the session data?
--
To unsubscribe: mailto:[EMAIL PROTECTED]
: Wednesday, January 09, 2002 5:40 PM
Subject: Re: Tomcat Performance
| Tom Drake and myself are working on a real cluster solution for tomcat,
| but
| we haven't released code so far, it will rather take some months before
it
| could be recommended to use it.
|
| That is cool. What will be used to store
Is there anyway to see how much memory is required for a particualar
servlet?
Tom Drake wrote:
RMI is used to store the sessions in 'other' tomcat instances in the
cluster.
They auto-discover each other using UDP multicasting (via a
UDP-multicast based RMI registry)
Tom
--
To
Maybe it has got something to do with a crappy OS ! Sorry. could'nt resist
On RH 7.1 linux, the IBM JDK 1.3 (latest build) runs like a scaled cat.
-- Aravind
-Original Message-
From: Hari [mailto:[EMAIL PROTECTED]]
Sent: Friday, 24 August 2001 20:20
To: [EMAIL PROTECTED]
Subject:
Again demonstrating that performance is completely dependant upon the OS, JDK, type of
web application, etc. Blanket statements like, Tomcat is faster/slower than some
other container are *pretty much* (not completely) useless nowadays.
How hard is it to install JDKs and test? Change the
i had the best results with the sun jdk 1.3.1 on windows and with ibm jdk
1.3.0 for linux. on some linux machines the sun jdk wouldn't work at all...
-Original Message-
From: Hari [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 24, 2001 2:20 PM
To: [EMAIL PROTECTED]
Subject: Tomcat
On Fri, 24 Aug 2001 14:43:50 +0200 [EMAIL PROTECTED] wrote:
i had the best results with the sun jdk 1.3.1 on windows and with ibm jdk
1.3.0 for linux. on some linux machines the sun jdk wouldn't work at all...
Not to defend it or anything =) but I've run it on suse, redhat, debian, and
Maybe it has got something to do with a crappy OS ! Sorry. could'nt resist
On RH 7.1 linux, the IBM JDK 1.3 (latest build) runs like a scaled cat.
Is that good or bad? I have never seen a 'scaled cat' so cannot tell.
Sounds like a mutant, so maybe it's got funny legs or something?
Miles
Miles I. Daffin wrote:
Aravind Naidu wrote:
On RH 7.1 linux, the IBM JDK 1.3 (latest build) runs like a scaled cat.
Is that good or bad? I have never seen a 'scaled cat' so cannot tell.
Sounds like a mutant, so maybe it's got funny legs or something?
i think it's first cousin to a scalded
PROTECTED]
Sent: Friday, August 24, 2001 6:10 PM
Subject: Re: Tomcat Performance
Again demonstrating that performance is completely dependant upon the OS,
JDK, type of web application, etc. Blanket statements like, Tomcat is
faster/slower than some other container are *pretty much
AM
To: [EMAIL PROTECTED]; Rob S.
Subject: Re: Tomcat Performance
Hi Rob,
I didn't do comprehensive tests. Just started tomcat, wait about 20 sec,
and stop tomcat (using the batch files, on Win2K). I didn't test on Linux.
For this 'test' ;-) Sun JDK responds well than IBM JDK.
- Hari
Yep,
I think that with the later glibc you have to limit the stack size available
to the session you run the sun jdk in. It used to *not* start for me untill
the stack size was limited to 2meg (ulimit -s 2048), now runs fine.
Jeff
On Friday 24 August 2001 23:31, you wrote:
On Fri, 24 Aug
Could be something on your app or in the JVM you use.
My dev setup is exactly as yours ( Dual processor ) , but i use Tomcat
3.3, i did not found that that problem with the apps i normally run on
tomcat, btw JetSpeed, CoCoon2 and my own apps ( JDBC intensive which
every DB in market ).
Saludos
Are you sure your configuration is exactly the same? In the readme
file, item 6.11 (I believe) mentions how a mis-configuraiton can cause
infinite loops. If you changed your server.xml file, I would look at this.
Randy
-Original Message-
From: karthik g
Please read recent discussion about this, missing '/' context in server.xml
can cause high cpu utilization problems
venkat
Hi All,
I have a java application running under this setup:
Tomcat-3.2, IIS-5.0,SQL Server-7.0 with Windows 2000 Professional on a
Dual
Processor Machine.
The problem
We did experience this. Our problem was a growing memory
consumption that was caused by a bug in our code. We did a lot of
experimenting and ran Tomcat inside of OptimizeIt to determine where the
memory was leaking.
Randy
-Original Message-
From: Cheong Takhoe
Hi Deniz Demir,
I Just now sent a mail with subject Problem in linking Tomcat 3.2.1 and
Apache 1.3.19 in RedHat Linux 7.0
Kindly address the problem
I'm facing the problem with the same configuration as you have.
- Redhat 7.0 - Kernel 2.2.16-22, PIII 650, 256M Ram
- Tomcat 3.2.1
Jeff Kilbride wrote:
I'm a little surprised by your performance numbers, actually. I wrote a
small servlet to test Apache + Tomcat + MySQL speed and tested it on an
intel celeron 433MHz box with a single IDE drive and 128MB of RAM -- pretty
much a piece of crap. I ran Tomcat 3.2.1, ajp13,
the overhead of synchronizing in Java? Are you
synchronizing the entire method or just the block of code that does the
insert/update?
Thanks,
--jeff
- Original Message -
From: Steve Brunton [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, May 09, 2001 9:17 AM
Subject: Re: Tomcat
Jeff Kilbride wrote:
No, I didn't synchronize either. That would defeat the purpose of my
connection pool and *really* slow down performance.
Right, that's why I expected crappy performance from the servlet as a
whole, since I synchronized the method. What has me bothered is the 39
Craig O'Brien wrote:
Hello,
Those are similar numbers to what I have been getting on Intel platforms
with Tomcat3.2.1. You can boost Tomcat to about 90 pages per second using
ajp13, mod_jk, and reducing the log level to warn rather then info. (of
course your Servlet code makes a
04, 2001 11:30 AM
Subject: Re: Tomcat Performance..
Craig O'Brien wrote:
Hello,
Those are similar numbers to what I have been getting on Intel platforms
with Tomcat3.2.1. You can boost Tomcat to about 90 pages per second
using
ajp13, mod_jk, and reducing the log level to warn rather
Steve Brunton typed the following on 04:46 PM 5/1/2001 -0400
Running Tomcat 3.3M2 with Apache 1.3.19 using mod_jk.so and the apj13
setup on a HP LPR with 2 500 Mhz PIII's and Solaris 8 x86 with all the
latest and greatest patches on it (Tomcat/Apache/mod_jk.so built
natively on the box) I get
Kief Morris wrote:
It sounds like you tested Tomcat on an HP, and Tomcat on an x86 with
Solaris 8, vs. iPlanet on an Ultra running Solaris 2.6. You are then guessing
that the difference in performance is entirely due to the servlet engine?
Have you tried testing Tomcat vs. iPlanet on
PROTECTED]]
Sent: Wednesday, May 02, 2001 8:50 AM
To: [EMAIL PROTECTED]
Subject: Re: Tomcat Performance..
Kief Morris wrote:
It sounds like you tested Tomcat on an HP, and Tomcat on an x86 with
Solaris 8, vs. iPlanet on an Ultra running Solaris 2.6. You are then
guessing
that the difference
]]
Sent: Monday, January 15, 2001 1:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Tomcat Performance Questions
One thing the documentation states is that you should use the
AJP13 Protocol which is suppose to be faster. That connector
is not configured in the default server.xml file. They use AJP12
I
Sorry if I missed it, early on in the thread, but what
servlets etc are you
testing the configurations with? In order to assess the
performance of the
engine, you should be using simple, easily analysed servlets, doing a
minimum of functionality. Say, a snoop servlet, a session servlet,
One thing the documentation states is that you should use the AJP13 Protocol which is
suppose to be faster. That connector is not configured in the default server.xml file.
They use AJP12
I have not tested this but you might want to give it a try.
Stefan
, 2001 1:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Tomcat Performance Questions
One thing the documentation states is that you should use the
AJP13 Protocol which is suppose to be faster. That connector
is not configured in the default server.xml file. They use AJP12
I have not tested
Hi,
can you tell how you tested the performance. I would like to apply the
benchmark for my machine.
Thanks
Nagaraj.
-Original Message-
From: Stefan Langer [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 15, 2001 7:54 PM
To: [EMAIL PROTECTED]
Subject: RE: Tomcat Performance Questions
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