Messages in this thread | | | Date | Thu, 3 Sep 1998 18:10:12 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: Differences between FreeBSD and Linux system call mechanism |
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On Thu, 3 Sep 1998, MOLNAR Ingo wrote:
> > On Thu, 3 Sep 1998, Richard B. Johnson wrote: > > > There is work being done on a new "SysCall" method. Time will > > tell if it is really faster. [...] > > ?? I have posted a patch a few weeks ago that implements SYSENTER/SYSLEAVE > based system call support, and have posted detailed (cycles accuracy) > timings too. (and sample code that does a getpid() based on the new system > entry point) > > > My guess is that it will be 6 of one-kind and 1/2 dozen of another. > > no need to guess, null syscall latency is twice as fast on a PII with > SYSENTER, 150 cycles vs. 300+ cycles with INT. >
Good.
Cheers, Dick Johnson ***** FILE SYSTEM WAS MODIFIED ***** Penguin : Linux version 2.1.118 on an i586 machine (66.15 BogoMips). Warning : It's hard to remain at the trailing edge of technology.
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