Scheduling latency and an introduction

Ned Konz ned at bike-nomad.com
Wed Sep 24 18:52:46 UTC 2003


On Wednesday 24 September 2003 10:17 am, Lee Azzarello wrote:

> Here's the nit picking. How does squeak deal with latency and how
> does it interface with the Windows system clock? Our NTP network is
> fairly new and it's still developing sync, but the display of the
> Windows system clock is quite inconsistant with the display of the
> Squeak clock (measured by watching the seconds ticker). I can think
> of some possible explainations for this but I don't really know
> enough about these kind of details to feel informed.

In ClockMorph>>step we call "Time now" which goes to the OS.

If you change ClockMorph>>stepTime to return 100 instead of 1000 
milliseconds, is the display close enough for your needs?

This isn't a latency issue, really; it's just that there's an 
asynchronous loop running Morphic, and the ClockMorph is getting its 
#step method called every 1000 milliseconds. Which means that it's 
only going to change every second or so.

-- 
Ned Konz
http://bike-nomad.com
GPG key ID: BEEA7EFE



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