Re: [PATCH] syscall latency improvement #1

Andi Kleen
2002-01-26T01:24:47Z

Linus Torvalds <torvalds@transmeta.com> writes:

> Looking at the code, I suspect that 99.9% of this "improvement" comes from
> one thing, and one thing only: you removed the "cli" in the system call
> return path.

It doesn't explain the Athlon speedups. On athlon cli is ~4 cycles.

-Andi