Hi Nix,
Please check my reply below. Thanks.
Santosh
From: Nikola Milutinovic [EMAIL PROTECTED]
Date: Sep 27, 2005 9:13 PM
Subject: Re: (WAS) Generic Types support in Tomcat?
To: Tomcat Users List tomcat-user@jakarta.apache.org
Santosh Asbe wrote:
Hi all,
Hi. First of all, it is very advisable to use a separate thread when
opening a new topic. I am not reprimanding you, I'm merely advising. I
do not consider it rude to jump into someone elses thread of
discussion - I do not consider this thread mine, in the first place.
The problem is, this thread has been going on for some time and most
people are not going to bother reading it at all, so you will loose
valuable audience.
[TCS_TIN]
I by mistake replied to this message. i ahve started a new thread for the
same.
A] I am using tomcat 4.1.30 ( 32 bit) with Apache 2.0.46 ( this is
standard
apache which comes with RHEL 3.0). I am currently using RHEL 32 bit without
RAID confiuration.
There is no 32-bit version of TC, it is Java application. JVM, of
course, is and should be 32/64-bit.
Now i am planning to move to 64 bit RHEL 3.0 with RAID configuration but
he
the new Apache of RHEL 3.0 and same tomcat 4.1.30 ( 32 bit).
I am facing a problem with mod_jk.
I feel it is 32 bit complied mod_jk.
It most likely is.
Can anyone help me with the solution
Unless you can locate a 64-bit version of mod_jk, try compiling your own
version. You'll need apache-devel-* RPM for that. Some might say that
even 32-bit version of mod_jk will work, but I would fly away from it -
mod_jk is a sensitive pieve of software, connecting (multithreaded)
Apache with multithreaded TC and the version should be as close to the
target platform, as possible.
[TCS_TIN]
i have complied 64 bit mod2_ jk . what is the difference between mod_jk and
mod2_jk?
Now when i start the Apache it is not able to find the JkMount entry in the
ssl.conf file. It gives the following error
ERROR: Starting httpd: Syntax error on line 121 of
/etc/httpd/conf.d/ssl.conf:
Invalid command 'JkMount', perhaps mis-spelled or defined by a module not
included in the server configuration
my ssl.conf line 12 states:
121 JkMount /TIN loadbalancer
122 JkMount /TIN/* loadbalancer
( TIN is the application name)
Can you tell me what wrong am i doing? or this error is due to me using
mod2_jk??
B] Also my tomcat goes into hang state . So i have set an parameter
LD_ASSUME_KERNEL=2.4.21. That is my Linux kernel version. Is this ok. where
do i set this parameter. i have set it in the catalina.sh.
The location is OK, but you should not use it on the new kernel. Is it
2.6.x? Older releases of 2.6 branch had a problem with JVM and you had
to set that parameter. New releases should be bug free.
[TCS_TIN]
My Linux version is : Linux blade8 2.4.21-32.EL #1 SMP Fri Apr 15 21:02:58
EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
My version of Kernel is 2.4.21. So it older version right. So i should set
this parameter right? Setting parameter will solve my problem right or
should i set i to lower version of kernel??
C] Sometime when the tomcat is started it spwans more than one processes.
And then during shudown it creates problems. Also sometimes the list of
open
files goes beyond 1024. that is he ulimit. due to which he tomcat doesnot
respond.
Linux kernel 2.4 emulates threads through lightweight processes/tasks.
There is nothing fundamentally wrong about it (perhaps internal resource
ecconomics are misused), AFAIK, but the ps output is going to confuse
you, showing each thread as a separate process. Nothing problematic
about it.
The number of 1024 processes/threads is alarming, however. TC will
normally wpawn idle worker threads to prepare for future requests, but
the parameter is usually less than 100. I'd say your application is
launching threads for some reason. Either that or there is a serious bug
in your system.
[TCS_TIN] Will check about this .
D] I am currently using 4.1.30 version of tomcat. Are there any fixes or
upgrades for this tomcat. Can you inform me the link for the same.
4.1.30 is the last normal RPM, I know of. There are newer versions,
check out www.JPackage.org http://www.jpackage.org/. Word of caution,
prepare for RPM dependancy
nightmare, unless you're using some RPM management tool.
[TCS_TIN] Will check the site out.
Nix.
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