[time-nuts] DPC Latency

William H. Fite omniryx at gmail.com
Sat Jun 18 13:46:47 UTC 2011

Those of us who run SDRs are all too familiar with the DPC issue...

You're right, this is a useful little tool.


On Sat, Jun 18, 2011 at 9:42 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
> DPC Latency = Deferred Procedure Call Latency = how long it takes Windows
> to get around to doing what it should do real time. Put another way - how
> lazy is your computer?
> It may not be a big issue, but it's probably worth checking for free:
> http://www.thesycon.de/deu/latency_check.shtml
> We don't do audio or video since we're serious Time Nuts:)... The same
> issue would mess up our stuff though. It certainly would be useful to know
> when playing with NTP.
> Usual disclaimer - if your PC explodes don't blame me. There are lots of
> other programs out there that do the same thing. I have no connection with
> these guys. It's just the first one I found.
> Bob
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