>>>>> "DS" == Dan Sugalski <[EMAIL PROTECTED]> writes:
DS> At 11:49 AM 1/6/01 +0000, Simon Cozens wrote:
>> On Fri, Jan 05, 2001 at 11:42:32PM -0500, Uri Guttman wrote:
>> > SC> 5x slowdown.
>> >
>> > not if you just check a flag in the main loop. you only check the event
>> > system if you have pending events or signals, etc. the key is not
>> > checking all events on each pass thru the loop.
>>
>> Which is exactly what Chip did in his safe-signals patch. 33% slowdown.
DS> I think you misremember that number. IIRC it was somewhere between
DS> 3%-5%. Heck, I barely managed a 33% slowdown forcing all variable
DS> access to aquire a per-variable mutex. (A recursive one, no
DS> less...)
that is what i would expect form a simple flag test and every N tests
doing a full event poll. and even up to 5-10% slowdown i would think is
a good tradeoff for the flexibilty and ease of design win we get in the
i/o and event guts. but then, i have always traded off speed for
flexibility and ease. hey, so has perl! :)
uri
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