[time-nuts] FreeBSD, NetBSD, or Minix-III?

Hal Murray hmurray at megapathdsl.net
Mon May 18 00:28:16 UTC 2009


>> I'm interested in the case where interrupts and scheduling are
>> enabled so there may be arbitrary gaps inserted into the simple
>> code.

> Interrupts enabled means that you can't make it reliable. 

Sure you can.  Just compare the two high samples and try again if they are 
different.

This disadvantage is that you get more jitter on how long it takes to get the 
answer.  That may be better than taking the overhead of a system call to get 
into the kernel.


-- 
These are my opinions, not necessarily my employer's.  I hate spam.






More information about the time-nuts mailing list