Hi Stefan, On Mo 30 Jan 2012 18:37:40 CET "newsgroups.ma...@stefanbaur.de" wrote:
Am 29.01.2012 00:46, schrieb Mike Gabriel:From my point of view it is indeed not necessary to recompile NX to be used with libjpeg-turbo. People may correct me if that is not true.So for a running X2Go server and client you can drop in on squeeze: apt-get install libjpeg-turbo62 on wheezy, sid: apt-get install libjpeg-turbo8And your host should then run with libjpeg-turbo instead of libjpeg. Please note, that this change affects every application on that system. So... no warranty given from our side. Also, if testing libjpeg-turbo, please read the documentation of libjpeg-turbo:Guys,it would be really helpful if someone could type up a step-by-step guide for testing.
1. Install X2Go Server and Client2. install libjpeg-turbo62 (squeeze) or libjpeg-turbo8 (wheezy + sid) from the heuler repos on packages.x2go.org on server and/or client
3. test the experience...
I'd love to try this out, but either I *did* something wrong or something *goes* wrong, as the following had no positive effect whatsoever:* add heuler repository, apt-get update * apt-get install libjpeg-turbo62 on my squeeze-based server * connect from latest Microsoft Windows client to said server * use Iceweasel in rootless mode, access YouTube and watch a movie
What compression do you use? 16m-jpeg-9?
The only effect I saw was a "screen hang" when leaving YouTube for another web site, and no speed increase whatsoever. :-(
hmmm...
1) Will this currently only work between Linux Clients and Linux Servers?
jpeg compression is performed on both sides: client _and_ server, I guess. It can have an effect on both sides (I guess).
2) Will it work with rootless sessions? (I remember NoMachine/FreeNX once stated that rootless sessions in general - i.e. not related to libjpeg-turbo - gain less speed than a fullscreen session - but that was years ago and may have changed and may not apply to X2Go at all, I don't know.)
It should...
3) Is the library required on both the server *and* on the client?
Best performance is achieved if it is installed on both: server and client. But it can be installed on either, only.
4) Should it work "out of the box" after installing the package, or do I have to change some file somewhere to add the library path?
out-of-the-box, by theory... However, we should compare a drop-in of the package into an already running server with an NX (redistributed) compiled on a system where libjpeg-turbo is installed during package build. Not sure if that changes performance gain...
5) Do I have to restart a daemon after changing this file?
No daemons involved here, at all.
6) Why was I able to install the package without apt-get telling me it would remove the "non-turbo" library package? To make this clear, I don't complain about a lack of a warning (Mike did provide such a warning in his posting), but I'm surprised about the lack of *action* i.e. no library package has been removed when I installed the libjpeg-turbo62 package.
Please read more about dpkg-divert: http://www.debian-administration.org/articles/118 And refer to the postrm and preinst scripts of libjpeg-turbo: http://code.x2go.org/gitweb?p=libjpeg-turbo.git;a=tree;f=debian
Kind Regards, Stefan
Greets, Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb
pgp58ddKfXWBv.pgp
Description: Digitale PGP-Unterschrift
_______________________________________________ X2Go-Dev mailing list X2Go-Dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/x2go-dev
