Re: Interesting analysis of linux kernel threading by IBM

From: Horst von Brand (vonbrand@sleipnir.valparaiso.cl)
Date: Sun Jan 23 2000 - 09:07:58 EST


Larry McVoy <lm@bitmover.com> said:

[...]

> In both cases, it's very rare that having more threads than CPUs ever
> helps you. As Alan said, threads are for people who can't program
> state machines. He's dead on correct and if you think about it, threads
> have inherently more cache footprint than a state driven model (this
> actually isn't true in theory in all cases but man, oh, man is it ever
> true in practice. I don't know what it is but people who use threads
> have this builtin assumption that memory bandwidth is infinite and cache
> size is infinite, etc.)

Because the von Neumann computer model still widely taught in school has no
cache, since the CPU is assumed much slower than memory? ;-)

-- 
Horst von Brand                             vonbrand@sleipnir.valparaiso.cl
Casilla 9G, Viņa del Mar, Chile                               +56 32 672616

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Jan 31 2000 - 21:00:10 EST