I *HAVE* seen problems with the HotSpot server under SMP with the Linux 6.2
kernel.
Under heavily loaded conditions, the JVM would 'pause' for somewhere in the
range of 30 to 60 seconds. This would occur more frequently when the load
was higher. After struggling with many potentially solutions it was
eventually solved by running in interpreted more (-Xint).
-----Original Message-----
From: elephantwalker [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 20, 2001 9:05 AM
To: Orion-Interest
Subject: RE: smp w/jdk
Erik,
This is very ugly. I have two more support calls with Sun on my support
contract. I will call them to see what's happening with this bug. How they
could release a product that has such a serious bug is beyond me. There
seems to be a workaround, though:
in Bash, try setting the environmental variable as follows:
_JAVA_SR_SIGNUM=16
export _JAVA_SR_SIGNUM
Regards,
the elephantwalker
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Erik Bogghed
Sent: Friday, April 20, 2001 8:24 AM
To: Orion-Interest
Subject: RE: smp w/jdk
My experience is that almost all 1.3.* variants (Sun, IBM, Blackdown)
breaks under heavy load on Linux (Redhat 7). It's a recognized bug and
is said to be fixed (even thought I found out that that was not the case)
in 1.3.1 RC1.
See http://developer.java.sun.com/developer/bugParade/bugs/4355769.html
for some info about this.
The only JVM I tested that did not break under heavy load was JRockit.
To simulate the load I used several instances of Apache JMeter.
I ended up using Blackdowns 1.2.2.
Regards,
Erik Bogghed
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of elephantwalker
> Sent: den 20 april 2001 06:07
> To: Orion-Interest
> Subject: smp w/jdk
>
>
> I just noticed that the readme for Sun's 1.3.0.02 recommends against smp
> kernels on Linux.
>
> Is that an issue? I haven't noticed a problem, had anybody else noticed a
> problem with Linux and Sun's jvm with the smp kernel?
>
> Regards,
>
> The elephantwalker
>
