On 09 Feb 1999 22:13:43 -0800 
 cgd@netbsd.org (Chris G. Demetriou) wrote:

 > One need that i've noticed implementing some things is that sometimes
 > you want 'microtime()' or another 'time'-based time value and other
 > times you want a microtime()-equivalent based on mono_time.  Some
 > timing users Really Don't Want time to go backwards, but have a need
 > for accurate time...

YES!  For example, subr_disk.c:disk_busy().

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>