Messages in this thread | | | Date | Sun, 12 Dec 1999 13:35:53 +0100 | From | Pavel Machek <> | Subject | Re: [patch] fastcall-2.3.32-B6, SYSENTER/SYSEXIT support |
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Hi!
> We want to AVOID that kind of chaos - we do not want to have different > ways of doing the same things that offer slight advantages over each over. > > In short, it is NOT WORTH IT to speed up system calls by 150 cycles unless > it's a clean and good interface. People should wake up to the realitites > here: most system calls take on the order of thousands of cycles, and the > benchmarks that have been quoted in this discussion are mostly completely > and utterly irrelevant to ANYTHING. > > Who cares how fast you can do "getpid()"? NOBODY. It's meaningless.
Well, read from cached file is _not_ meaningless, still Ingo seen improvements on that.
> Guys, this is final. Look at the bigger picture, instead of being > enamoured with a cool feature. > > If you want to speed up a system call, make the ONE system call you > concentrate on be "gettimeofday()". And realize that you don't even
I think you should concentrate on read(), write() and select() syscalls. Those are the ones done often.
Pavel -- I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel. Pavel Hi! I'm a .signature virus! Copy me into your ~/.signature, please!
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