Marcel,

Might this actually reflect problems with MacOS-X scheduling?

Assuming that it works a bit like X on Unix (although I know
the graphics display is more like DIsplay Postscript than X),
then there could be a problem with the display manager process
and the Squeak process fighting for CPU cycles. In this case,
increasing the inter-cycle pause time might actually help, since
Squeak would relinquish more cycles to the display manager.

You might try running the standard Mac VM under Carbon and see
if that makes any difference. If you have an old 2.8 (pre-events)
image around, it would also be interesting to see how that runs
under various VM's. I'd like to know if the problems are limited
to a particular VM or image.

I'm assuming that you're not running some CPU hog application
like an MP3 compressor while you're running Squeak, that power
saving modes are disabled if this in on a laptop, etc.

I've been running many combinations of VM and image under
Mac OS 8.1 on an older 292 MHz G3 laptop, and performance
is basically fine. John Macintosh has been doing some tuning
to get the last once of responsiveness out of it, but even
the less optimum VM's don't have the problems you are seeing.
(Which sound awful!)

	-- John


>> From: Bob Arning  <arning at charm.net>
>>
>> On Fri, 9 Feb 2001 17:54:18 +0100 Marcel Weiher  
><marcel at metaobject.com> wrote:
>> >- The world menu appears after 2-3 seconds, sometimes not at all. 
>>
>> Marcel,
>>
>> Refresh my memory - which image/VM/OS are we talking about here?  
>If just ran a test
>> in 3.1 (MacOS 8.6) and found I could get the world menu up AND  
>click again to dismiss
>> it 16 times in 13 seconds. I didn't once feel that a click got lost. 
>
>This is with my MacOS-X VM, and an admittedly somewhat out of date  
>image 2.9-2710.  I am just getting a more up-to-date image.  I first  
>thought it was my VM slowing/losing events, but the tracing I did  
>revealed that it was happening within Morphic.
>
>The VM has the InputSensor support code disabled to force it to rely  
>exclusively on the input-even stuff.
>
>Marcel