> For the single-process (1-fork) case, syscall overhead improved
> moderately from 1.6 uS in 4.0 to 1.3 uS in 5.0. I think the marked
> improvement in the competing-cpu's case is due to the movement of the
> MP lock inward somewhat (even for syscalls that aren't MP safe),
> the removal of a considerable number of unnecessary 'lock'ed instructions,
> and the removal of the cpl lock (which benefits spl*() code as well as
> syscall/interrupt code).
>
> I got similar results for calling sigprocmask():
You should be able to remove the splhigh() from sigprocmask and run it
MPSAFE. At least, I can't find a reason not to (and it works here, yes).
--
\\ Give a man a fish, and you feed him for a day. \\ Mike Smith
\\ Tell him he should learn how to fish himself, \\ [EMAIL PROTECTED]
\\ and he'll hate you for a lifetime. \\ [EMAIL PROTECTED]
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-current" in the body of the message
