Run "perl -V" on both hosts and check if there are any differences 
between the output, mainly on "Platform" and "Compile-time options" sections.

Also, you could create a simple perl script (like "$x++ for (1..1000000)") 
and Benchmark them on both hosts.

HTH,

Sergio.

On Thu, 6 Jan 2005, Alex Greg wrote:

> Hi,
> 
> 
> Recently I've upgraded one of our mod_perl servers to Fedora Core 3
> (the others are all running Fedora Core 1).
> 
> 
> What I've found is that the Fedora Core 3 machine is consistently
> slower to respond than the Fedora Core 1 machines:
> 
> 
> [EMAIL PROTECTED] root]# for f in web1 web2 web3 web4; do echo $f; time
> lynx -source "http://$f/cgi-bin/data.cgi?id=1268"; > /dev/null ; echo ;
> done
> web1
> 
> real    0m0.681s
> user    0m0.010s
> sys     0m0.020s
> 
> web2
> 
> real    0m0.641s
> user    0m0.020s
> sys     0m0.010s
> 
> web3
> 
> real    0m0.626s
> user    0m0.020s
> sys     0m0.010s
> 
> web4
> 
> real    0m0.987s
> user    0m0.020s
> sys     0m0.010s
> 
> 
> Our load balancer has picked this up as well and adjusted the weight
> of the server accordingly, so it is definately consistently slower.
> 
> 
> We're using the Fedora Perl packages (perl-5.8.3-16 on FC1,
> perl-5.8.5-9 on FC3), but I have compiled Apache and mod_perl on all
> the machines from source, with the following command:
> 
> 
> perl Makefile.PL APACHE_SRC=../apache_1.3.31/src DO_HTTPD=1
> USE_APACI=1 EVERYTHING=1  APACI_ARGS='--prefix=/www'
> make && make test && make install
> 
> 
> All four machines are using Apache 1.3.31 and mod_perl 1.29 and run on
> identical hardware (P4 3.06Ghz, 3GB RAM). The only reason we're using
> Fedora Core 3 on the 4th one is because the SCSI firmware version is
> different and doesn't work under Fedora Core 1.
> 
> 
> Any advice on this would be much appreciated.
> 
> 
> Regards,
> 
> 
> -- Alex
> 

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