[Vm-dev] Sista/Scorch callbacks v. clock jitter

Ben Coman btc at openinworld.com
Sat Oct 28 15:55:58 UTC 2017

hi Clement,

I was watching your nice talk on Pharo Optimizing JIT Internals. At 14:40
you mention VM call-back to Scorch DNU-style.  I was just curious how that
might affect the jitter of the DelayScheduler waiting for the
timingSemaphore set by "primSignal: timingSemaphore atMilliseconds:
to be signalled by the VM?


cheers -ben

P.S. Later when you say Sista will be an optional VM - curious whether
Sista might be switched on/off from within the VM? or just a command line
flag? or an actual different VM (which adds complexity to system
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