Q1) A hardware load balancer is always better. The question is - how big of a
load to you expect and are you willing to pay the price? Fir small loads, sw
load balancers are fine.
Q2) You'll find a lot of this in the forum posts, various web location
including blogs, and in books specific to
Hi Tony,
Hi Peter and other folks,
It is very good thread and your input is really great help.
I have few questions.
Before my questions, I want you to know about the environment.
Our Environment is : RHEL ( redhat enter prise Linux) 5.0, JBoss 5.x, Oracle
11G RAC. etc.. No Web UI for this
Currently at 3-4msec as measured at the Rich Client decoder (JAX-WS) after
upgrading to AMD64 X2 5200+. Using JBoss 4.2.2GA and JDK 1.6.0_07. Apache is in
front of JBoss and access logs indicate 0usec for about 90% of the requests.
Regards,
Tony Anecito
Founder,
MyUniPortal
Thanks,
Jerry, i open a open a case and i am waiting for a quick answer from jboss.
I check my log every time that the server crash, i see a NestedSQLException
from jboss log. He said that there is not available connexion managed from the
pool. When i check my database, there is not any cpu
I'm sure everyone here would like to see your JVM options to start with...
HOWEVER, since you have a JBoss service contract, please open up a case with
them and mark it as a Production is down.
They should be calling you pretty quickly, and if they don't then you should
call them! Needing
You can also use jmap with the -heap option to check your permgen.
It will give you a listing of different areas of the jvm memory footprint,
permgen is at the bottom. It's a quick way to take a look.
You run it with jmap -heap jboss jvm pid
For instance:
/usr/jdk1.5/bin/jmap -heap 7302
| ...
hi tdanecito.
i have one problem, i think u could help me :)
Environment:
1. OS - Sun Solaris SPARC 64-bit.
2. Java - JDK 6.0
3. Hardaware - Sun Machine (4 CPU, 16 GB Fis. Memory, 31 GB Swap)
4. AS - JBoss Application Server 4.0.4 GA.
5. Project - EJB 3.0 and JSF Technologies.
6. Jboss run.conf
Hi,
It seems like 128m is enough memory for most implementations.
Yes supply a stack trace. You could also try jconsole to monitor JBoss and see
if it shows how much Perm space is actually used.
The other thing you might do is check the bug fixes for 4.0.5GA to see if there
is any memory leak
Hi All,
Sorry for being away so long. Been busy working on the front end of the web
system that uses JBoss for the app server. Was able to release the system today
and some information can be found at theserverside.com at:
Final Hardware Upgrade.
Upgraded finally from AMD64 3800+ AM2 to AMD64 X2 4200+ AM2. Everything else on
the motherboard stayed the same.
My JBoss startup time went from 18seconds to 14seconds or 22% improvement.
Just further proof that the startup time is CPU bound.
Regards,
-Tony
View the
Hi All,
I tried some testing regarding the time it takes to start JBoss and I am
getting 18 seconds on a AMD64 3800+ AM2 1GB DDR2-800 on Windows 2000
Professional. I am loading a big EAR (9MB) because of inclusion of Web Services
jar for JAX-WS.
I set up a RAM Drive and put JBoss on it but I
Good Morning,
Over the weekend I was able to come up with a simple light weight cache that
got me what I needed that was beyond a HashMap in simplicity yet the
performance was in the nanosecond or picosecond range (0-999 picoseconds) I had
a problem measuring the execution time since it had a
Okay, Learned something new last night. My logins are actually below 1 usec
because the timer System.nanoTime() in my timer class was taking 1.072 usec.
I am working on a solution for caching that looks like I might get down to the
40-50 nansecond range for the cache. then hopefully I will be
Hi Pramod,
Thanks for the comment. I am on vacation right now but checking this thread.
For what I can remember without my system in front of me for the server:
Windows 2000 professional sp4
Mustang 1.6 b91
JBoss 4.0.4 GA
Apache 2.2
Intel P4 3.0GHz HT Northwood core
Regular DDR 400
Two hard
Hi Tony,
I really impressed with all the stats and performace tips provided in this
discussion. Could you please let me know about your enviornment. Also did u
tried the Regression testing on your application. If yes could you please post
your stats.
Thanks
Pramod
View the original post :
Hi All,
Just wanted to mention I am using JAX-WS 2.0 for my web service layer. Even
though it is a reference implementation it still has been fast compared to
axis. The important thing to know about Web Service layers for performance are:
1. Use fast infoset.
2. Use Document literal
3. Use
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