Re: Alan Cox quote? (was: Re: accounting for threads)

Jonathan Lundell
2001-06-19T17:36:36Z

At 9:09 AM -0700 2001-06-19, Larry McVoy wrote:
>Don't you think it is funny that Sun doesn't publish numbers comparing
>their thread performance to process performance? Sure, you can find
>context switch benchmarks where they have user level switching going on
>but those are a red herring. The real numbers you want are the kernel
>level context switches and those are just as expensive as the process
>context switch numbers.

Sun (or at least SPARC) is a bit of a special case, though. SPARC's
register-window architecture makes thread-switching (not to mention
recursion) significantly more expensive than on most other
architectures.
--
/Jonathan Lundell.