October 2014 - Pharo-users - lists.pharo.org

Re: [Pharo-users] About Zinc http components

by itlists＠schrievkrom.de

I have a little different view. lpgl is no real problem for me - it may be used for non-open-soure stuff without problems. Therefore I see no real problems with that. The other thing is: speed. And here it might differ a lot. I had written a heavy communication server in Smalltalk and with about 30 clients the Smalltalk process was CPU bound. No way to go. Introducing 0MQ and put all communication to an external thread and Smalltalk can fly again. That's the difference. Marten Am 07.10.2014 um 20:12 schrieb Alain Rastoul: > Thanks you for your answers. > > 0mq looks great, but released with LGPL licence, and I don't like that > (I don't > understand why there is also a GPL licence file in the distribution ? - > clearly a *noway*), > I prefer a full smalltalk implementation I can debug when things go wrong. > I think latency and timing problems would be the same, no big difference > in performance. > BTW knowing about this library is cool and may be of some help (who knows), > thank you Marten for the reference. > > I agree totally with you Sven about performance and standards. > And I also agree with you about reusing someone else's work ... > I don't like to reinvent the wheel, especially a good wheel when mine > would be worst, > I would if I were a wheel specialist - clearly not the case here. -- Marten Feldtmann

Oct. 7, 2014

Re: [Pharo-users] About Zinc http components

by Alain Rastoul

Thanks you for your answers. 0mq looks great, but released with LGPL licence, and I don't like that (I don't understand why there is also a GPL licence file in the distribution ? - clearly a *noway*), I prefer a full smalltalk implementation I can debug when things go wrong. I think latency and timing problems would be the same, no big difference in performance. BTW knowing about this library is cool and may be of some help (who knows), thank you Marten for the reference. I agree totally with you Sven about performance and standards. And I also agree with you about reusing someone else's work ... I don't like to reinvent the wheel, especially a good wheel when mine would be worst, I would if I were a wheel specialist - clearly not the case here. Much (if not all) of what I found on the web about WebSocket is about a browser/server connection and does not talk about use in a server/server connection, hence my question. But you answered it, and your answer is ok with my thoughts (plus using Zn components is a breeze) Thanks again regards, Alain Le 07/10/2014 18:26, Paul DeBruicker a Ã©crit : > marten wrote >> There are some good C libraries out there, which are suitable to >> connect programs with each other: a good example is 0MQ. >> >> Marten >> >> -- >> Marten Feldtmann > > > Hi Marten, > > > Is your 0mq library posted somewhere and MIT licensed? > > Thanks > > Paul > > > > -- > View this message in context: http://forum.world.st/About-Zinc-http-components-tp4783071p4783223.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

Oct. 7, 2014

Re: [Pharo-users] About Zinc http components

by Paul DeBruicker

marten wrote > There are some good C libraries out there, which are suitable to > connect programs with each other: a good example is 0MQ. > > Marten > > -- > Marten Feldtmann Hi Marten, Is your 0mq library posted somewhere and MIT licensed? Thanks Paul -- View this message in context: http://forum.world.st/About-Zinc-http-components-tp4783071p4783223.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Oct. 7, 2014

Re: [Pharo-users] Glorp + NBSQLite3

by Esteban A. Maringolo

More reasons to consider SQLite as solid option: 50% faster than 3.7.17 The latest SQLite 3.8.7 alpha version (available on the download page http://www.sqlite.org/download.html) is 50% faster than the 3.7.17 release from 16 months ago. That is to say, it does 50% more work using the same number of CPU cycles. http://permalink.gmane.org/gmane.comp.db.sqlite.general/90549 Regards, -- Esteban.

Oct. 7, 2014

Smalltalks 2014 Pharo Attendants (Meeting/Sprint?)

by Esteban A. Maringolo

Is anybody here going to 2014's edition of Smalltalks in Cordoba, Argentina? I saw Jannik listed in one of the talks, maybe anybody else is comming and we can arrange a Pharo Sprint or similar (I've never been in a Pharo sprint). Esteban A. Maringolo ps: If anybody is hesitating, Cordoba is a beautiful city, and once you pay the air tickets, local expenditures are really cheap in terms of foreign currency.

Oct. 7, 2014

Re: [Pharo-users] About Zinc http components

by itlists＠schrievkrom.de

There are some good C libraries out there, which are suitable to connect programs with each other: a good example is 0MQ. Marten -- Marten Feldtmann

Oct. 7, 2014

Re: [Pharo-users] About Zinc http components

by Esteban A. Maringolo

2014-10-07 4:59 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > Hi Alain, > > Any network protocol between two processes has overhead, even the one you would write yourself. It does make sense to use something that already exists, uses open standards and is used and battle tested by others. > > There is a fundamental difference between HTTP and WebSockets: HTTP is request/response where the initiative lies with the client, WebSockets is fully bidirectional once the connection is setup. There is also less overhead with WebSockets. In both cases you should take care to do your data conversions on/off the wire as efficient as possible. > > I would say: go for it. +1 for each of the paragraphs. Plus in the not so far future HTTP2 [1] might be promoted to a standard, meanwhile SPDY [2] is already usable and deployed, so the connection cost and the protocol transport might become cheaper along faster underlying communication channels. Best regards! [1] https://tools.ietf.org/html/draft-ietf-httpbis-http2-14 [2] http://tools.ietf.org/html/draft-mbelshe-httpbis-spdy-00

Oct. 7, 2014

Re: [Pharo-users] Smalltalk based unikernels

by Rafael Luque

Understood. I'll take a look to the sources then. Thank you! 2014-10-07 12:03 GMT+02:00 Marcus Denker <marcus.denker(a)inria.fr>: > > On 07 Oct 2014, at 12:01, Rafael Luque <rafael.luque.leiva(a)gmail.com> > wrote: > > Thank you Stef, > > Do you know any tutorial or documentation I can follow to get a PharoNOS? > > > Keep in mind that this was an experiment... (kind of a research prototype). > > I don't think that there is a Tutorial. > > Rafa > > 2014-10-07 9:17 GMT+02:00 stepharo <stepharo(a)free.fr>: > >> >> Hello, >>> >>> I'm playing with the unikernels idea [1]. Specifically I'm using Mirage >>> OS [2] to probe a minimal HTTP server running on AWS directly over Xen, >>> without any OS between the application and the hypervisor. >>> >> >> Yes yes yes >> we would love to have a Pharo solution for that. >> >>> >>> Mirage OS is based on OCaml. Is there any Smalltalk solution to build >>> this kind of unikernels? The idea of Smalltalk all the way down (at least >>> to the virtual devices of the hypervisor) is very appealing to me. Indeed I >>> think this idea was proposed for the first time by Dan Ingalls: >>> >>> ''An operating system is a collection of things that don't fit into a >>> language. There shouldn't be one.'' >>> >>> I have found SqueakNOS [3], but I don't know if it is active or if it >>> works with Pharo. >>> >> >> It was working. >> >> >> >>> Thank you, >>> >>> Rafa >>> >>> [1] http://queue.acm.org/detail.cfm?id=2566628 >>> [2] http://www.openmirage.org/ >>> [3] http://squeaknos.blogspot.com.es/ >>> >> >> >> > >

Oct. 7, 2014

Re: [Pharo-users] Smalltalk based unikernels

by Marcus Denker

> On 07 Oct 2014, at 12:01, Rafael Luque <rafael.luque.leiva(a)gmail.com> wrote: > > Thank you Stef, > > Do you know any tutorial or documentation I can follow to get a PharoNOS? > Keep in mind that this was an experimentâ¦ (kind of a research prototype). I donât think that there is a Tutorial. > Rafa > > 2014-10-07 9:17 GMT+02:00 stepharo <stepharo(a)free.fr <mailto:stepharo@free.fr>>: > > Hello, > > I'm playing with the unikernels idea [1]. Specifically I'm using Mirage OS [2] to probe a minimal HTTP server running on AWS directly over Xen, without any OS between the application and the hypervisor. > > Yes yes yes > we would love to have a Pharo solution for that. > > Mirage OS is based on OCaml. Is there any Smalltalk solution to build this kind of unikernels? The idea of Smalltalk all the way down (at least to the virtual devices of the hypervisor) is very appealing to me. Indeed I think this idea was proposed for the first time by Dan Ingalls: > > ''An operating system is a collection of things that don't fit into a language. There shouldn't be one.'' > > I have found SqueakNOS [3], but I don't know if it is active or if it works with Pharo. > > It was working. > > > > Thank you, > > Rafa > > [1] http://queue.acm.org/detail.cfm?id=2566628 <http://queue.acm.org/detail.cfm?id=2566628> > [2] http://www.openmirage.org/ <http://www.openmirage.org/> > [3] http://squeaknos.blogspot.com.es/ <http://squeaknos.blogspot.com.es/> > > >

Oct. 7, 2014

Re: [Pharo-users] Smalltalk based unikernels

by Rafael Luque

Thank you Stef, Do you know any tutorial or documentation I can follow to get a PharoNOS? Rafa 2014-10-07 9:17 GMT+02:00 stepharo <stepharo(a)free.fr>: > > Hello, >> >> I'm playing with the unikernels idea [1]. Specifically I'm using Mirage >> OS [2] to probe a minimal HTTP server running on AWS directly over Xen, >> without any OS between the application and the hypervisor. >> > > Yes yes yes > we would love to have a Pharo solution for that. > >> >> Mirage OS is based on OCaml. Is there any Smalltalk solution to build >> this kind of unikernels? The idea of Smalltalk all the way down (at least >> to the virtual devices of the hypervisor) is very appealing to me. Indeed I >> think this idea was proposed for the first time by Dan Ingalls: >> >> ''An operating system is a collection of things that don't fit into a >> language. There shouldn't be one.'' >> >> I have found SqueakNOS [3], but I don't know if it is active or if it >> works with Pharo. >> > > It was working. > > > >> Thank you, >> >> Rafa >> >> [1] http://queue.acm.org/detail.cfm?id=2566628 >> [2] http://www.openmirage.org/ >> [3] http://squeaknos.blogspot.com.es/ >> > > >

Oct. 7, 2014