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 > [email protected] > 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 : [email protected] WWW : http://www4.informatik.uni-erlangen.de/~morty
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