Mike Tancsa:
A somewhat obvious question to some perhaps, but what server application mix on FreeBSD today sees an improvement using 64bit CPUs ? In my ISP centric world, my big apps are BIND, IMAP/POP3, httpd via apache, SMTP, AV and SPAM scanning, and firewalls/routing. Apart from larger RAM, why would these benefit from the 64bit world ? Or would they ?
Benefits from AMD64: - larger RAM limit (40bit memory address), - 64bit GRPs, - much faster access to memory (memory controller inside core - no northbridge), - it much better scales (with many CPUs) (he doesnt share memory bandwith), - large caches L1 = 64KB, L2 = 1MB (comparing to xeon 12/512K),
Some Xeon's have 2MB now..
- DEP = Data Execution Protection (it has to be supported via OS),
Intel has the 'NX' (no execute) bit - isn't this the same?
- Multimedia Extensions for graphics / vector processing.
Xeon's have this too I believe (I don't think this is anything new either).
= Opterons remove memory bottlenecks espacially with multi-cpus.
Ive had large acceleration at: - math computation (f77, 2-4GB double precision matrix) single opteron 1.8GHz (sun v20z) was 4x faster then celeron 2.4GHz. - databases (pgsql) Opteron 1.8 GHz 2x faster then Xeon 3.2
That's interesting, although I wouldn't compare a Celeron against an AMD64, but interesting nonetheless.
I would assume that everything which can run: - in parallel, - on multi-Opterons CPU, - which uses heavly RAM, - which can take benefits from 64bit registers (floating points), will have _extreamly_ boost comparing to Intels EMT64 (or Itanium2).
Agreed..
Eric
-- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology A lost ounce of gold may be found, a lost moment of time never. ------------------------------------------------------------------------ _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
