I'm currently in the process of selecting hardware for a FreeBSD
system having the main task of collecting network statistics via MRTG
or RRDtool. In addition the machine in question should be used to
collect netflow statistics plus providing a web-interface for
displaying them.
To give you an impression about the workload to be expected: Currently
the system is a dual Xeon machine with 3GHz-CPUs reaching work loads
(top) of 7 to 9. Disk-IO btw is not the problem.
For the new system I thought about a 4-CPU machine, 4GB RAM - with
either 32- or 64-bit architecture.
definitely Opteron based. this are really FAST, including really fast
memory bandwidth, not only CPU.
at least - lowest end Athlon64 machines are comparable in speed with high
end P4 :)
FreeBSD works fine on Athlon64/Opteron machines. not tested (by me) on
multiprocessor ones, but it should be not a problem.
o) Should I stick with a 32-bit architecture (i386) or go for any of
the 64-architectures?
go to Opteron 64-bit architecture.
o) Is FreeBSD 6.1 considered equally stable under the i386
architecture as under any of the 64bit architectures?
not tested by me. but simply test it before buying.
o) Are SMP-systems with 4 CPUs supported in i386?
yes.
o) Are SMP-systems with 4 CPU supported in any of the 64-bit
architectures?
yes.
o) Anything else to consider in this context?
try to optimize software you use first :) only if it's impossible buy new
machine.
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