* Jaromir Dolecek <jdolecek@netbsd.org> [011023 17:36] wrote:
> Index: sys/pipe.h
> ===================================================================
> RCS file: /cvsroot/syssrc/sys/sys/pipe.h,v
> retrieving revision 1.7
> diff -u -p -r1.7 pipe.h
> --- sys/pipe.h	2001/07/23 19:34:36	1.7
> +++ sys/pipe.h	2001/10/23 22:34:35
> @@ -65,7 +65,7 @@
>  #if defined(__FreeBSD__)
>  #define PIPE_MINDIRECT	8192
>  #elif defined(__NetBSD__)
> -#define PIPE_MINDIRECT PAGE_SIZE
> +#define PIPE_MINDIRECT (2*PAGE_SIZE)
>  #endif
>  #endif

What about arches that have 16k pages or something?  I know the
8192 is ugly, but it sort of makes sense as a hardcoded value
rather than using some arbitrary multiple of PAGE_SIZE.

Btw, if you wouldn't mind sharing, what would make this faster
than FreeBSD's version?  The optimized timestamp?  Or is there
something else FreeBSD can learn from your implementation?

-- 
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
 start asking why software is ignoring 30 years of accumulated wisdom.'
                           http://www.morons.org/rants/gpl-harmful.php3