[X2Go-Dev] NX3.5 speed degradation

Daniel Quiroga sirderigo at gmail.com
Thu Mar 29 00:05:30 CEST 2012


Unity does not work using x2go, try installing gnome 2.3 or xfce and
launching the session.

When i tried x2go and nx with unity it was really laggy because of the open
gl display.

Greetings

2012/3/28 Eugene San <eugenesan at gmail.com>

> Yes, I've used same hardware with identical connection settings.
> Also I've validated connection settings reported by NX during session
> setup.
> NX3.5 behaves bad no matter which network media used, I've tested
> with: 1000Gbit Lan, 100Mbit Lan, 50Kbit WAN, 100Kbit
> WLAN and localhost (127.0.0.1).
> To exclude specific hardware problems, several key tests were
> performed on several different machines.
>
> On Wed, Mar 28, 2012 at 14:15, Moritz Struebe
> <Moritz.Struebe at informatik.uni-erlangen.de> wrote:
> > Did you make sure you have the same connection settings (Network, Image
> > compression, etc)
> >
> > Cheers
> > Morty
> >
> > On 2012-03-28 14:05, Eugene San wrote:
> >> Hi all,
> >>
> >> I want to discuss the subject.
> >>
> >> Story goes like this:
> >> About 6 months, while planning upgrade (Ununtu 11.04->11.10) I've
> >> noticed severe degradation in speed of NX sessions.
> >> At the time I've decided to wait until LTS release, while being sure
> >> issue is related to GUI changes in Ubuntu.
> >> Recently I've reviewed the situation with 12.04 and found that problem
> >> is still there and related to NX and not to GUI changes in Ubuntu.
> >> My guess is that surrounding changes in distribution cause NX agent to
> >> misbehave.
> >>
> >> Overall user experience became unusable even on LAN and localhost
> connections.
> >>
> >> Now to the details:
> >> 1. Screen redraw operations lags heavily even on local links.
> >>     Instant (sub 0.5sec) on U10.04, up to 5 seconds on U12.04.
> >> 2. Constant screen redraws consume much more traffic.
> >>     Sub 100kbps on U10.04.
> >>     10mbps+ on U12.04 (Creating session with WAN quality settings and
> >> reconnecting with LAN, lowers bandwidth to sub 1mbps but picture
> >> quality suffers)
> >> 3. NX4 on U12.04 is faster 3x (in average) than 3.5 on U10.04.
> >> 4. NX3.5 on U12.04 is slower 3x then NX3.5 on U10.04 (some tests are
> >> x1000 slower!)
> >> 5. Hybrid NX3.5<->NX4 is slow with NX3.5 as server and fast with NX4 as
> server.
> >>
> >> Some details:
> >>   * I've evaluated both 32 and 64 bit platforms.
> >>   * I've compared fresh Ubuntu 10.04 and 12.04.
> >>   * Both Nomachine NX binaries and X2GO binaries (ppa:x2go/ppa) were
> tested.
> >>   * For reference I've performed NX4 and hybrid NX3.5<->NX4 testing.
> >>   * Tested several usecases:
> >>     * Desktop with manual operation of terminal, webbrowser and random
> >> GUI application.
> >>     * Rootless UnixBench in graphics mode. (Note in 64bit test caches
> NX agent!)
> >>     * Desktop UnixBench in graphics mode. (Note in 64bit test caches NX
> agent!)
> >>     * Rootless Xterm with scrolling text (ls -R /)
> >>
> >> Please provide your feedbacks.
> >> _______________________________________________
> >> X2Go-Dev mailing list
> >> X2Go-Dev at lists.berlios.de
> >> https://lists.berlios.de/mailman/listinfo/x2go-dev
> >
> >
> > --
> > Dipl.-Ing. Moritz 'Morty' Struebe (Wissenschaftlicher Mitarbeiter)
> > Lehrstuhl für Informatik 4 (Verteilte Systeme und Betriebssysteme)
> > Friedrich-Alexander-Universität Erlangen-Nürnberg
> > Martensstr. 1
> > 91058 Erlangen
> >
> > Tel   : +49 9131 85-25419
> > Fax   : +49 9131 85-28732
> > eMail : struebe at informatik.uni-erlangen.de
> > WWW   : http://www4.informatik.uni-erlangen.de/~morty
> >
> >
> >
> >
> >
> > _______________________________________________
> > X2Go-Dev mailing list
> > X2Go-Dev at lists.berlios.de
> > https://lists.berlios.de/mailman/listinfo/x2go-dev
> _______________________________________________
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>



-- 
Daniel Quiroga
www.daniel-quiroga.com
cel: 3012745740
—¿Por qué nunca hablamos de Ezequiel?
Apoyó las cosas en el piso con mucha calma. Estiró su mano como para
acariciarme. Me miró. Bajó la mano. Luego la vista y dijo en un susurro.
—Hay cosas de las que es mejor no hablar.
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