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I don't have figures, but Linux does not scale well above 4 CPUs. Most commercial Unixes are designed to scale. David Kramer wrote: > So does anyone have *recent* facts or anecdotes about the technical merits > of one over the other? > > Historically, FreeBSD has had a more secure and debugged TCP/IP stack, but > I haven't heard that claim in a while. > > This is really a scaled-down "cathedral and bazaar" experiment, as linux > is developed by thousands with very little official oversite, while BSD is > guarded by a smaller group. > > > > > In line with some other discussions on this list. from a > performance/scalability/reliability perspective, the areas that > differentiate *NIXes the most are: > - Scheduling > - Memory management > - Filesystem scheme (when to write, how much to read, etc) > > One of the reasons Sun did so well in the past is that they had excellent > scheduling schemes. In fact, it was replaceable, so you could change the > scheduling scheme to suit your purposes. As I understand it, Linux's > scheduler is one of it's weaknesses, and a reason it benefits so much from > multiprocessors. Dunno about FreeBSD. > > AIX played freakish games with memory management. The upside is that > memory management is very efficient and usually sucessful. The downside > is that memory is constantly borrowed from disk cache to heap to shared > libraries so it's hard to know exactly how much memory is actually free. > > ------------------------------------------------------------------- > DDDD David Kramer http://thekramers.net > DK KD "That venture capitalists are willing to take any level of > DKK D risk, even a modest one, after all that has happened in the > DK KD ecommerce sector, is inspiring. They might almost be > DDDD capable of becoming Red Sox fans" -Keith Regan > > _______________________________________________ > Discuss mailing list > Discuss at blu.org > http://www.blu.org/mailman/listinfo/discuss > -- Jerry Feldman <gaf at blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9
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