> On 21 Jun 2016, at 23:32, Eliot Miranda <eliot.mira...@gmail.com> wrote: > > Hi John, > > On Tue, Jun 21, 2016 at 1:30 PM, John Brant <br...@refactoryworkers.com > <mailto:br...@refactoryworkers.com>> wrote: > On 06/21/2016 08:13 AM, Sven Van Caekenberghe wrote: > > On 21 Jun 2016, at 11:58, Ben Coman <b...@openinworld.com > <mailto:b...@openinworld.com>> wrote: > > On Tue, Jun 21, 2016 at 3:29 PM, Clément Bera <bera.clem...@gmail.com > <mailto:bera.clem...@gmail.com>> wrote: > Hello John. > > I'm just guessing here. Lacking information. It could be: > > Guess 3) the UI is known to be much slower in Pharo. Can you try headless or > after ticking "Server mode" In the Pharo settings in System. > > Or try something like... > [ Transcript cr; show: (Time millisecondsToRun: [1 to: 100000000 do: > [:i | Object new]] ) ] forkAt: 75. > > BTW, this is essentially a garbage collection benchmark: you create > 100,000,000 empty objects. It stresses the GC, especially the ephemeral phase > of it. Since the GC is part of the VM, you are testing the VM more than any > image code. > > That's what I thought too, and that's why I was surprised that there was much > difference between Squeak and Pharo for this. Furthermore, when I ran the > Pharo image using a Squeak vm, I still saw the difference so I thought it > must be some image related thing instead of a vm. > > FYI, the differences between the VMs are minimal. The base VMs differ only > in the FilePlugin API, such that the Pharo API supports accessing POSIX file > permissions whereas the Squeak one does not. There are differences in the > set of external plugins, Pharo providing Freetype and Cairo support, whereas > buy default the Squeak VM does not. But in the execution machinery they are > identical. So it's a relief to me that you've pin-pointed a UI issue. That > makes sense to me, whereas, say, differences in GC performance due to > finalisation load would confuse me as I see no likely cause of the size of > effect you're seeing.
yes, I was going to point there… also maybe some compilations flag could change, but I do not think so. Anyway… can you test headless? pharo Pharo.image eval “etc” and if not, also testing with old Workspace (instead Playground and then Rubric) would be nice: Workspace open. (and of course, all other windows closed) cheers, Esteban > > HTH > > John Brant > > _,,,^..^,,,_ > best, Eliot
