Re: [Discuss-gnuradio] nanosecond timing under Linux

[Daniel O'Connor]

On Friday 12 May 2006 08:28, Lee Patton wrote:
> Any suggestions for getting nanosecond (or at least, sub-microsecond)
> timing under Linux?  The best I've Googled have been platform-dependent
> assembly timers.

I know FreeBSD has [get]nanotime() but I don't know how portable that is 
(probably not at all).

Also, if you are using this to tag USRP streams you are probably better off 
finding some way to sync the start of acquisition to something and then 
counting samples. That way it's "free".

(at work our acquisition system syncs to GPS 1PPS and if we need mucho 
accuracy we use GPS disciplined Rubidium clocks driving a PLL)

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
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