Hi,
My server is still a core2duo, perhaps this is the problem? Anyone here with similar "low" hardwaresettings? I don't know what preemtive settings mean either I have to admit, I got that information from fedora side. And I tried a real preemtive kernel for fedora, but I don't see any differences (perhaps a very small improvement, but this might be my subjective view). As stated in my last mail ping are beyond 0.5ms, nearly every ping before, during and after playing video with a handful spikes not excedding 2-3ms.
Could it be my cpu, my graphic card on server side or my whole system? I don't think the client (cause I used another client) or the network (pings, network transfers ok) is the problem. But cpu is not over 20% too. I haven't configured anything in x2goserver, just standard. On my server nomachine is installed for testing if this matters (nomachine is faster than x2go, but not really fast). Are there any logs I can search. I even turned off selinux und firewall for testing but it had no impact, firewall shouldn't be the problem either, cause we go over ssh.
No idea right now...
Thanks, Harald
2015-09-07 23:30 GMT+02:00 Robert Dinse <nanook@eskimo.com>:
I get real time video, server I7-2600 100mb/s backbone, client, oldMacPro-1 4CPU 4G of RAM running Ubuntu 15.04 with preemptive kernel on 15mb/s Comcast cable modem, server running Fedora 22 with a pre-emptive kernel, don't understand what "preemptive settings" mean, either kernel is built so that it can be preempted or not. I can get 30 frame/second video not 1/2 frames per second. And even with a non-preemptive kernel I only see occasional glitches not 1 frame every ten second, so you've got something still really broken. Did you try the ping I suggested?
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On Mon, 7 Sep 2015, Harald Heigl wrote:
Date: Mon, 7 Sep 2015 23:24:42 +0200
From: Harald Heigl <Harald.Heigl1000+x2go@gmail.com> To: x2go-user@lists.x2go.org Subject: Re: [X2Go-User] Questions regarding mate/video quailty
Hi,
I've got some more information: the kernel itself is not preemptiv, but there are some preemptiv settings set. But I used an alternative preemptive fedora kernel and found only small changes. What I found:
- In vlc I have to deactivate overlay-mode
- In Parole I have to set "No Xv" instead of "X11/XShm/Xv" in settings, videooutput.
Parole works better than vlc and is at around 1-2 updates per second, which is far better than every 10 second, but still not really watchable. Perhaps there is still some wrong setting on my computer (caching the video-pictures?) or my server is at it's limit ... Though there are still 3Gb (of 6Gb) free, CPU is working at 10-30%, ping is nearly all the time lower than 0.5ms.
Thanks so far, Are there any settings or players you prefer? Is a core2duo@2.13Ghz too slow as server, which impact is on the graphic card (though I have no problems locally)
Harald
2015-09-07 16:59 GMT+02:00 Robert Dinse <nanook@eskimo.com>:
Do a uname -a on the box and see if it has PREEMPT in the resultstring. If it does then it is and then I'd start looking at resource usage on the box or possibly network latency issues. Might do a ping from your client while watching a video and see if you get any network latency spikes.
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On Mon, 7 Sep 2015, Harald Heigl wrote:
Date: Mon, 07 Sep 2015 13:39:01 +0000
From: Harald Heigl <Harald.Heigl1000+x2go@gmail.com> To: x2go-user@lists.x2go.org Subject: Re: [X2Go-User] Questions regarding mate/video quailty
Hi,
I don't think, that the client is the problem, cause I tested also a second x86-fedora22-client with exactly the same result, so I expect the server is the problem. I've asked at fedoraforum cause of preemptive kernel and they say the standard is still preemptive.
With nomachine 4.0 video is much better (even if not 100%), but with nomachine I can't use virtual desktop for free.
Any other suggestion? Server requirements, ... ?
Thanks, Harald
Robert Dinse <nanook@eskimo.com> schrieb am So., 6. Sep. 2015 22:06:
I'm not familiar with your client machine but on the server side,build a kernel with kernel pre-emption enabled, for myself at least it helped considerably.
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On Sun, 6 Sep 2015, Harald Heigl wrote:
Date: Sun, 6 Sep 2015 22:01:48 +0200 From: Harald Heigl <Harald.Heigl1000+x2go@gmail.com> To: x2go-user@lists.x2go.org Subject: Re: [X2Go-User] Questions regarding mate/video quailty
Hi,
I have still the problem, that running video over x2go (per vlc or mates default paroleplayer) is really slow and laggy. server: Fedora 22, core2duo, x86, 4.0.1.19 client: linaro, cubieboard, armhf, 4.0.5.0
- I have testet with another x86 computer as client with no change
- I have connected the server with the other x86 client directly to find out if the network has a problem, with no change
- I have tried iperf, but the speed of my gigabit lan is fast
- I have changed the graphiccard of my server (if that changes anything)
I have to admit, that my server is an old core2duo/computer, with old radeoncard, ssd and 6GB RAM, but I just want to connect a single user from another room inside my home. (and at max one physical user) Fedora 22 was set up on the server 2 months ago with a fresh install and a lot of packages like libreoffice, 2 browsers, ... . x2goserver was set up from the repos. Running videos directly on the computer is no problem. Are there any limitations or something I can check (logs, something I can try out) or are there any minimum system requirements?
Thanks, Harald
2015-08-24 22:30 GMT+02:00 Harald Heigl <Harald.Heigl1000+x2go@gmail.com : > > > Hi, > > Thanks for pointing this out. I had x2goserver 4.0.1.19 on fedora and > 4.0.1.xx on my client, which seemed to be an old version. I assumed > server and client-version belong together. I installed 4.0.5.0 (from > ubuntu armhf repos) on the client but had the same difficulties, > eventhough it was better and more fluent now. > I'll see if I can find another x86 computer and try it from there. I > think my client is the problem (or the armhf-packages not 100% the > right one for cubieboard). > I will need some days to identify the guilty part, I'll write her > again. > > Thanks for all the information, > Harald > > 2015-08-24 19:16 GMT+02:00 Orion Poplawski <orion@cora.nwra.com>: >> >> >> On 08/24/2015 06:37 AM, Harald Heigl wrote: >>> >>> >>> Hi, >>> >>> Thanks for the information I just used the >>> fedora(server)/linaro(client) included repos and they have both >>> some >>> 4.0.1 ... >>> Fedora won't be a problem (I can see a x2go-repo in the wiki), I >>> hope >>> I find some armel-builds for my cubieboard. any hints? (sometimes >>> rasbperry-builds work as well) >>> >>> I'll test it at home a little bit later and tell you. >> >> >> >> You seem to be mixing client and server versions here a bit. Fedora
has
>> >> >> x2goserver 4.0.1.19 (latest) and x2goclient 4.0.5.0 (latest). The
version
>> >> >> numbers are not linked. >> >> >> -- >> Orion Poplawski >> Technical Manager 303-415-9701 x222 >> NWRA, Boulder/CoRA Office FAX: 303-415-9702 >> 3380 Mitchell Lane orion@nwra.com >> Boulder, CO 80301 http://www.nwra.com
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