On Wed, Dec 3, 2014 at 5:29 AM, Ben Coman <btc@openinworld.com> wrote:

Eliot Miranda wrote:

��One if these, which Ben Coman's recent changes above my 64-bit microsecond clock should have fixed is a spin loop of up to a second to synchronize the second and millisecond clocks.��

Is this in the image or VM ? I didn't notice this.

In the image.�� See secondsWhenClockTicks in Pharo 2 and Pharo 3.�� Its also in Squeak :-(.�� It is called from DateAndTime class>>#startUp: via DateAndTime class>>#initializeOffsets.�� It throws away on average half a second on every launch.�� Looks like it is not used in Pharo 4.

I found these either by profiling (clock sync; I can give you a change set that allows profiling across a snapshot, quit, resume) or using the VM simulator (GC to check for finalization facilities).

That would be interesting to try.

cheers -ben

best,

Eliot