[X2Go-Dev] NX3.5 speed degradation

Eugene San eugenesan at gmail.com
Thu Mar 29 08:34:29 CEST 2012


Unity was not tested.
On Mar 29, 2012 12:05 AM, "Daniel Quiroga" <sirderigo at gmail.com> wrote:

> 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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>> https://lists.berlios.de/mailman/listinfo/x2go-dev
>>
>
>
>
> --
> 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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>
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