January 2015 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] R: Finish one thing today

by Pablo R. Digonzelli

+1 Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Metrotec SRL 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 ----- Mensaje original ----- De: "Lorenzo Schiavina" <lorenzo(a)edor.it> Para: "Pharo Development List" <pharo-dev(a)lists.pharo.org> Enviados: MiÃ©rcoles, 14 de Enero 2015 13:09:53 Asunto: [Pharo-dev] R: Finish one thing today +1 Lorenzo -----Messaggio originale----- Da: Pharo-dev [mailto:pharo-dev-bounces@lists.pharo.org] Per conto di Sven Van Caekenberghe Inviato: mercoledÃ¬ 14 gennaio 2015 16:16 A: Pharo Development List Oggetto: Re: [Pharo-dev] Finish one thing today > On 14 Jan 2015, at 15:12, Pablo Estefo <pestefo(a)gmail.com> wrote: > > Wow... powerful message +1 > On 14 January 2015 at 10:32, Marcus Denker <marcus.denker(a)inria.fr> wrote: > This is nice: > > http://finishonethingtoday.com > > > Marcus > > >

Jan. 14, 2015

R: Finish one thing today

by Lorenzo Schiavina

+1 Lorenzo -----Messaggio originale----- Da: Pharo-dev [mailto:pharo-dev-bounces@lists.pharo.org] Per conto di Sven Van Caekenberghe Inviato: mercoledÃ¬ 14 gennaio 2015 16:16 A: Pharo Development List Oggetto: Re: [Pharo-dev] Finish one thing today > On 14 Jan 2015, at 15:12, Pablo Estefo <pestefo(a)gmail.com> wrote: > > Wow... powerful message +1 > On 14 January 2015 at 10:32, Marcus Denker <marcus.denker(a)inria.fr> wrote: > This is nice: > > http://finishonethingtoday.com > > > Marcus > > >

Jan. 14, 2015

Re: [Pharo-dev] Implementing lazy loading for expandable collections (part 2)

by Chris Cunningham

Hmm. Looking at the results in a relatively up to date Squeak 4.5: [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 100000. 1 to: 10000 do: [ :i | c add: i ] ] ] timeToRun 3624 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 10000. 1 to: 10000 do: [ :i | c add: i ] ] ] timeToRun 2540 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 0. 1 to: 10000 do: [ :i | c add: i ] ] ] timeToRun 2879 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 1000. 1 to: 10000 do: [ :i | c add: i ] ] ] timeToRun 2784 Apparently Squeak takes more time to allocate the large array than Pharo? That would explain why the first run is so much slower than the other 3 - the exact opposite of Max's results (for Pharo 1.3 - but inline with Pharo4 - although not as extreme as Pharo4). Then, what about an array that only adds at the beginning (instead of end)? I would expect worse performance - especially if I removed the space at the beginning. WIthout any of those changes, though: [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 100000. 1 to: 10000 do: [ :i | c addFirst: i ] ] ] timeToRun 2782 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 10000. 1 to: 10000 do: [ :i | c addFirst: i ] ] ] timeToRun 1845 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 0. 1 to: 10000 do: [ :i | c addFirst: i ] ] ] timeToRun 2052 [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 1000. 1 to: 10000 do: [ :i | c addFirst: i ] ] ] timeToRun 1962 Weird that it turned out faster. Maybe it has to do with the first time it runs out of room, it move data (and doesn't allocate a new array?). Stephan's code (in the same image): [ 10000 timesRepeat: [ | c | c := OrderedCollection new: 100000. c add: 1. 2 to: 10000 do: [ :i | c add: i beforeIndex: (i atRandom) ] ] ] timeToRun 200434 This last is much slower - every time it adds an value, it forces a copy of the data. It will not be as fast as the others. -cbc On Wed, Jan 14, 2015 at 6:05 AM, Stephan Eggermont <stephan(a)stack.nl> wrote: > I'm more worried about this part. > > [ 10000 timesRepeat: [ | c | > c := OrderedCollection new. > c add: 1. > 2 to: 10000 do: [ :i | > c add: i beforeIndex: (c atRandom) ] ] ] timeToRun > "5 min. 30 s." > > Stephan > >

Jan. 14, 2015

Re: [Pharo-dev] Finish one thing today

by Sven Van Caekenberghe

> On 14 Jan 2015, at 15:12, Pablo Estefo <pestefo(a)gmail.com> wrote: > > Wow... powerful message +1 > On 14 January 2015 at 10:32, Marcus Denker <marcus.denker(a)inria.fr> wrote: > This is nice: > > http://finishonethingtoday.com > > > Marcus > > >

Jan. 14, 2015

Re: [Pharo-dev] ci.inria.fr/pharo/ slow

by Marcus Denker

Hi, Sadly since yesterday the internet here in Chile is very slow. Therefore I am not in a situation to assess performance of anything. (everything is so slow that it is no usable since yesterday). > On 14 Jan 2015, at 11:17, Ben Coman <btc(a)openInWorld.com> wrote: > > Just an observation that https://ci.inria.fr/pharo/ <https://ci.inria.fr/pharo/> is really slow for me. Minutes to bring up the text of the page, and still waiting for all the graphics. > > https://ci.inria.fr/pharo-contribution/ <https://ci.inria.fr/pharo-contribution/> is fine.

Jan. 14, 2015

Re: [Pharo-dev] ci.inria.fr/pharo/ slow

by Ben Coman

also, it looks like pharo-contribution has some jobs days old. On Wed, Jan 14, 2015 at 10:17 PM, Ben Coman <btc(a)openinworld.com> wrote: > Just an observation that https://ci.inria.fr/pharo/ is really slow for > me. Minutes to bring up the text of the page, and still waiting for all > the graphics. > > https://ci.inria.fr/pharo-contribution/ is fine. >

Jan. 14, 2015

Re: [Pharo-dev] Hosting the Pharo VM on MirageOS

by Craig Latta

Hoi Joerg-- > The Mirage group envisions thousands of kernels running on a single > Hypervisor with his speed inter-kernel communications. See > http://openmirage.org/blog/update-on-vchan. The facilitates Smalltalk > systems consisting of a swarm of communicating images where each > image is single threaded and concurrency is via message passing. Cool! This would be a good place to use Context[1,2]. -C [1] https://github.com/ccrraaiigg/context [2] http://thiscontext.com -- Craig Latta netjam.org +31 6 2757 7177 (SMS ok) + 1 415 287 3547 (no SMS)

Jan. 14, 2015

ci.inria.fr/pharo/ slow

by Ben Coman

Just an observation that https://ci.inria.fr/pharo/ is really slow for me. Minutes to bring up the text of the page, and still waiting for all the graphics. https://ci.inria.fr/pharo-contribution/ is fine.

Jan. 14, 2015

Re: [Pharo-dev] Finish one thing today

by Pablo Estefo

Wow... powerful message On 14 January 2015 at 10:32, Marcus Denker <marcus.denker(a)inria.fr> wrote: > This is nice: > > http://finishonethingtoday.com > > > Marcus > > >

Jan. 14, 2015

Re: [Pharo-dev] Implementing lazy loading for expandable collections (part 2)

by Stephan Eggermont

I'm more worried about this part. [ 10000 timesRepeat: [ | c | c := OrderedCollection new. c add: 1. 2 to: 10000 do: [ :i | c add: i beforeIndex: (c atRandom) ] ] ] timeToRun "5 min. 30 s." Stephan

Jan. 14, 2015