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RE: Perl with SerialPort
On 14 February 2008 22:52, Brian Ford wrote:
> On Wed, 13 Feb 2008, Dave Korn wrote:
>> 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:
Ahh, I remember that.
Hmm. I wonder if it would ever be possible to avoid context switches by
doing signal processing in-thread. It needn't necessarily matter /which/
thread "is" the signal thread as long as there's only one at a time....
Can't think of a witty .sigline today....
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