Unfortunately, I don't remember exactly where I found it but it was probably in the Jan/Feb time frame in either JBoss or more likely Tomcat-user mailing list. On RH ulimit -s use to return "unlimited", it to now is 8192. I'm not sure if no-limit caused the problem or they really needed a 2K stack.
John Moore
-----Original Message-----
From: JD Brennan [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 11, 2002 4:31 PM
To: '[EMAIL PROTECTED]'
Subject: RE: [JBoss-user] Re: Does any one have a Linux JVM success story?
Do you have any pointers to more info on the ulimit problem?
On Debian, the default stack limit is 8192 and the fix is
to lower it to 2048. Interesting...
-----Original Message-----
From: John Moore [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 11, 2002 3:31 PM
To: '[EMAIL PROTECTED]'
Subject: RE: [JBoss-user] Re: Does any one have a Linux JVM success story?
Yes, we use RH 7.1 distribution, kernel 2.4.9-34smp, Sun 1.3.1_02 and JBoss 2.4.6_Tomcat-4.0.3. We have been running since March 1st with zero issues or unplanned downtime. The only change we've made that was critical is the addition of the statement "ulimit -s 2048" in run.sh before we start the jvm, some JVM problem documented elsewhere. Equipment: Dell 1550(2), dual 1.26 processors, and 512M with load balanced tomcat front ended by Apache.
John Moore
-----Original Message-----
From: Dain Sundstrom [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 11, 2002 2:52 PM
To: [EMAIL PROTECTED]
Subject: [JBoss-user] Re: Does any one have a Linux JVM success story?
You are giving me to much credit. I use Mandrake for my development
server, but Mandrake pisses me off. None of the RPMs work correctly and
it is a pain to configure. Anyway, I have been using the Sun 1.3.1_01
without any problems. This is a single 1.4 Ghz Athlon processor. This
is just my development box and I rarely leave the JVM up for more then
8 hours.
I use Debian for another server, but I don't run java on that box.
Debian also uses a very old kernel so most JVMs don't won't run.
The only unix server I really like is my FreeBSD box, but Java support
is seriously limited. You can run a native FreeBSD port of the Sun vm,
but you don't get HotSpot. Otherwise, you can run the Sun or IBM vm in
linux compatibility mode.
Has anyone had good luck running any Java application on Linux? What
linux distribution, version, JVM and JVM version did you use?
-dain
Alex Loubyansky wrote:
> Ok, Dain. I'm already downloading JRockit for windows and will report the
> results.
>
> As to running JBoss on linux. Dain, I would greatly appreciate your
> advices about this. Could you, please, recommend the os and vm?
> You prefer debian and mandrake. What vm do you prefer for them? Are
> there any special issues in these environments?
> You are that person on the list I trust completely ;)
>
> Thanks for your time and affords,
>
> alex
>
>
> DS> Alex Loubyansky wrote:
>
>>>DS> Does your ejb-jar.xml file correctly declare the XDoclet generated class
>>>DS> as the bean implementation class?
>>>
>>>Yes, here it is
>>><ejb-class>com.imedia.feedback.ejb.addressee.bean.AddresseeCMP</ejb-class>
>>>It inherits AddresseeEJB.
>>
>
> DS> ok
>
>
>>>DS> This could be a problem with jrocket and the proxy generation code.
>>>DS> Have you tried jrocket on your windows setup?
>>>
>>>No, Dain. I don't have even installation for windows.
>>>
>>>You make me puzzled with this thought. With IBMJava2 1.3.1 I couldn't
>>>even run JBoss on RH7.2. It's reproducible I posted exceptions and can
>>>do it again. If Jrockit is buggy, so the question about VMs rises
>>>again. We all know Sun's HotSpot has a bug too and isn't recommended.
>>>Actually, I haven't tried only Blackdown. Or should I just change the
>>>RH version?
>>
>
> DS> This is just a theory. No one really has a lot of experience with
> DS> jrocket, because it has only recently been marketed as free (I
> DS> personally don't believe it is free or will remain free, as the license
> DS> has not been updated). Test it on your windows setup so you can
> DS> eliminate jrocket as the source of this problem.
>
> DS> As for what works with Red Hat, I don't know. I use debian and
> DS> mandrake. I don't like Red Hat because they have a propensity to
> DS> release buggy kernels. There are a lot of issues with all of the JVM on
> DS> multi processor linux boxes, but from what I know they are all stable on
> DS> single processor machines. Are you running on a single processor box?
> DS> I know of a couple of companies NOT running JBoss that had to remove the
> DS> second processor from their java servers because of JVM issues. Anyway,
> DS> I personally don't run JBoss in production on RH, so I can't make a
> DS> recommendation. Maybe someone else can.
>
--
xxxxxxxxxxxxxxxxxxxxxxxx
Dain Sundstrom
Chief Architect JBossCMP
JBoss Group, LLC
xxxxxxxxxxxxxxxxxxxxxxxx
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