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RE: Perl with SerialPort
On Wed, 13 Feb 2008, Dave Korn wrote:
> On 13 February 2008 22:59, Dave Korn wrote:
> > On 13 February 2008 22:46, Dave Korn wrote:
> > t/01timing.............NOK 7# Failed test (t/01timing.t at line 33)
> > # then: 207441765 now: 207443905 diff: 2140
> > # Looks like you failed 1 test of 7.
> > t/01timing.............dubious
> That diff is absolutely reliably consistently 2140 for me. I'd
> speculate that maybe the cygwin signal emulation requires a context
> switch or two, to or away from the signal processing thread, and so
> we're seeing an extra quantum or two of constant overhead for systematic
Yep, two. The minimum quantum on NT based OSes is 1024. See this
thread for support of your hypothesis:
Lead Realtime Software Engineer
VITAL - Visual Simulation Systems
the best safety device in any aircraft is a well-trained crew...
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