- Pharo-users - lists.pharo.org

Splitting a single HTTP Request into multiple concurrent requests

by Sven Van Caekenberghe

Hi, Somebody asked how you would split single HTTP Request into multiple concurrent requests. This is one way to do it. Upfront I should state that - I do no think this is worth the trouble - It is only applicable to large downloads (even larger than in the example) - The other side (server) must honour Range requests correctly (and be fast) This one is based on the data used in the ZnHTTPSTest(s)>>#testTransfers units test. More specifically the files available under https://s3-eu-west-1.amazonaws.com/public-stfx-eu/ such as https://s3-eu-west-1.amazonaws.com/public-stfx-eu/test-2050.txt for the smallest one. sizes := (Integer primesUpTo: 100) collect: [ :each | 1024 * each + each ]. size := sizes last. concurrency := 11. step := size // concurrency. ranges := (0 to: size - 1 by: step) collect: [ :each | { each. (each + step) min: size } ]. chunks := Array new: ranges size. done := Semaphore new. ms := 0. [ ms := Time millisecondClockValue. ranges withIndexDo: [ :range :index | [ | client | (client := ZnClient new) https; host: 's3-eu-west-1.amazonaws.com'; addPath: 'public-stfx-eu'. client addPath: ('test-{1}.txt' format: { size }). client headerAt: #Range put: ('bytes={1}-{2}' format: range). client get. client close. chunks at: index put: client contents. done signal ] forkAt: Processor lowIOPriority ]. ranges size timesRepeat: [ done wait ]. ms := Time millisecondsSince: ms. (String empty join: chunks) inspect. ] fork. This takes about 2 seconds total for me. [ ZnClient new https; host: 's3-eu-west-1.amazonaws.com'; addPath: 'public-stfx-eu'; addPath: 'test-99425.txt'; get. ] timeToRun. Which is roughly similar to the single request (again, for me). Two things to note: connection time dominates, in the parallel case, 11 independent requests were executed, so concurrency is definitively happening. The largest size file is just 100k, split in about 10 parts, which is most probably not enough to see much effect from doing things in parallel. HTH, Sven

Oct. 18, 2021

Re: Virtual Reality-based programming environment

by Jesus Mari Aguirre

Please think of me. I will be pleased to collaborate El jue., 14 oct. 2021 18:09, Alexandre Bergel via Pharo-users < pharo-users(a)lists.pharo.org> escribiÃ³: > Just as a teaser, here is what you will play with :-) > > > Cheers, > Alexandre > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > On 12 Oct 2021, at 18:18, Alexandre Bergel via Pharo-users < > pharo-users(a)lists.pharo.org> wrote: > > Hello, > > We are a small and energetic team who want to push the state of the art in > Virtual Reality-based programming environment. > We have an advanced prototype, and we need help of participants to be part > of our experiment involving our software called VRIDE, a fully immersive VR > programming tool. > > In this experiment: > > â¢ You will be given a set of tasks to perform using our platform. The > experiment should not take more than 1 - 1.5 hours. > â¢ After that, you will have to answer some surveys and other final > questions. > > If you know how to program in Pharo, have access to a any VR device, such > as Oculus Quest or HTC Vive, and would like to be part of the experiment, > please reply to this email. The overall experiment is very enjoyable, fun, > and you will experience what we will believe programmers will use in the > future. > > We hope you are part of this. > > Regards, > Victor Segura, Leonel Merino, Alexandre Bergel and Geoffrey Hecht > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > >

Oct. 16, 2021

Re: Virtual Reality-based programming environment

by Alexandre Bergel

Just as a teaser, here is what you will play with :-) Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On 12 Oct 2021, at 18:18, Alexandre Bergel via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Hello, > > We are a small and energetic team who want to push the state of the art in Virtual Reality-based programming environment. > We have an advanced prototype, and we need help of participants to be part of our experiment involving our software called VRIDE, a fully immersive VR programming tool. > > In this experiment: > > â¢ You will be given a set of tasks to perform using our platform. The experiment should not take more than 1 - 1.5 hours. > â¢ After that, you will have to answer some surveys and other final questions. > > If you know how to program in Pharo, have access to a any VR device, such as Oculus Quest or HTC Vive, and would like to be part of the experiment, please reply to this email. The overall experiment is very enjoyable, fun, and you will experience what we will believe programmers will use in the future. > > We hope you are part of this. > > Regards, > Victor Segura, Leonel Merino, Alexandre Bergel and Geoffrey Hecht > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > >

Oct. 14, 2021

Virtual Reality-based programming environment

by Alexandre Bergel

Hello, We are a small and energetic team who want to push the state of the art in Virtual Reality-based programming environment. We have an advanced prototype, and we need help of participants to be part of our experiment involving our software called VRIDE, a fully immersive VR programming tool. In this experiment: â¢ You will be given a set of tasks to perform using our platform. The experiment should not take more than 1 - 1.5 hours. â¢ After that, you will have to answer some surveys and other final questions. If you know how to program in Pharo, have access to a any VR device, such as Oculus Quest or HTC Vive, and would like to be part of the experiment, please reply to this email. The overall experiment is very enjoyable, fun, and you will experience what we will believe programmers will use in the future. We hope you are part of this. Regards, Victor Segura, Leonel Merino, Alexandre Bergel and Geoffrey Hecht -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Oct. 12, 2021

UK Smalltalk User Group meeting - Wednesday, October 27th

by Giovanni Corriga

For this month's meeting, Cincom Smalltalk ( https://www.cincomsmalltalk.com/main/ ) product manager Arden Thomas will discuss recent product changes and improvements and demonstrate some tools and features of ObjectStudio and VisualWorks 9.1. Arden ( https://twitter.com/ArdenTCST ) started working with Smalltalk in 1986, looking for a better way to do software development â and he found it. Arden built factory floor layout tools for IBM, worked at ParcPlace as an SE, an instructor, and consultant, and at a hedge fund building financial analysis tools. Arden is currently the product manager for Cincom Smalltalk. This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/280378922 ) to receive the meeting details. Donât forget to bring your laptop and drinks!

Oct. 8, 2021

Re: [Pharo-dev] possible dates for Pharo Days 2022 :)

by Jonathan van Alteren

Hi Stef, Super nice to hear you're planning Pharo Days again! Both suggestions are good for us. We'll gladly make time for this :-) Good luck! Jonathan van Alteren Guild Partner | Object Guild B.V. Software die mÃ©t je werkt +316 22500930 jonathan(a)objectguild.com On 7 Oct 2021, 12:33 +0200, stephane ducasse <stephane.ducasse(a)inria.fr>, wrote: > Hello guys > > We are super excited because we want to organise PharoDays at Lille > We are checking some possible dates and we would like to know your point of view. > right now we were thinking that > 3/4 or 10/11 march would be good. > So let us know. > > S

Oct. 7, 2021

Re: possible dates for Pharo Days 2022 :)

by Kasper Ãsterbye

If I can make it, the early days in March are OK, 10-11 is maybe (lambs could come at that time ððð) > Den 7. okt. 2021 kl. 12.34 skrev stephane ducasse <stephane.ducasse(a)inria.fr>: > > ï»¿Hello guys > > We are super excited because we want to organise PharoDays at Lille > We are checking some possible dates and we would like to know your point of view. > right now we were thinking that > 3/4 or 10/11 march would be good. > So let us know. > > S

Oct. 7, 2021

possible dates for Pharo Days 2022 :)

by stephane ducasse

Hello guys We are super excited because we want to organise PharoDays at Lille We are checking some possible dates and we would like to know your point of view. right now we were thinking that 3/4 or 10/11 march would be good. So let us know. S

Oct. 7, 2021

Re: Maintainer of smalltalk.org?

by Benoit St-Jean

Peter William Lount. Used to work with him, I'll let him know when I get back home! EnvoyÃ© Ã partir de YahooÂ Courriel sur Android Le mar., oct. 5 2021 Ã 22:25, James Foster<smalltalk(a)jgfoster.net> a Ã©critÂ : I recently came across smalltalk.orgÂ and am curious to know who maintains it. I tried sending an email to the contact but the address bounced. Thanks! James Foster

Oct. 6, 2021

Re: Maintainer of smalltalk.org?

by Esteban Lorenzano

Hi James, it is not us :) Esteban On Oct 6 2021, at 4:25 am, James Foster <smalltalk(a)jgfoster.net> wrote: > I recently came across smalltalk.org (http://smalltalk.org) and am curious to know who maintains it. I tried sending an email to the contact but the address bounced. > > Thanks! > > James Foster

Oct. 6, 2021