Re: [plug] redhat9, fedora1, or redhat enterprise 3?

[vince cagud]

actually, i believe NPTL was introduced in RH9.0. the one thing that 
frustrates me in the RH kernels is its deviation against standard linux 
kernel. they still prefer the VM with OOM, which runs amok in certain 
configurations (saw it killing oracle, sheesh). gave us lots of problems 
when we deployed it in high-load environments. most of our RH9 
installations were brought down to RH8. i'm actually looking quite 
warily at RHEL3 as well.

-- Vince

Paolo Alexis Falcone wrote:

On Mon, 2004-04-19 at 17:51, Radamanthus Batnag wrote:
 

Hi friends,

We're about to deploy a moderate-traffic web site running on JBoss 
3.2.3/Tomcat 4.1.29/JDK 1.4.2 on Linux.
Aside from the cost, what are the big differences between redhat 9 
standard, fedora 1, and red hat enterprise 3?
   

Aside from the obvious applications-wise and kernel-wise, the default
kernels and C libraries employed by the three were taken at differing
periods during the stabilization of the kernel support NPTL in Linux
kernel 2.6. If I remember right, it was RH who was the first to
integrate NPTL support in the C Library and kernel during the 8.0
release, so I'm not sure if there's been a lot of changes in the NPTL
support in the C Library (although definitely a lot of changes have been
seen in the GNU C Library from that time on...)
 

Are there really big advantages in using Red Hat's 2.4 kernel "with 2.6 
features" with respect to running a JVM that needs a lot of file handles?
   

www.amitysolutions.com.au/documents/ NPTL_Java_threads.pdf
www.amitysolutions.com.au/documents/ Threads-technote.pdf
I dunno if this is an impartial testing, but there's already some papers
on the behavior of Java threads, JBoss using an NPTL-enabled setup.
 

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