[X2Go-User] Questions regarding mate/video quailty
Robert Dinse
nanook at eskimo.com
Mon Sep 7 23:30:39 CEST 2015
I get real time video, server I7-2600 100mb/s backbone, client, old
MacPro-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 at gmail.com>
> To: x2go-user at 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 at 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 at eskimo.com>:
>>
>> Do a uname -a on the box and see if it has PREEMPT in the result
>> string.
>> 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.
>>
>> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>> Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting.
>> Knowledgeable human assistance, not telephone trees or script readers.
>> See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.
>>
>> On Mon, 7 Sep 2015, Harald Heigl wrote:
>>
>>> Date: Mon, 07 Sep 2015 13:39:01 +0000
>>>
>>> From: Harald Heigl <Harald.Heigl1000+x2go at gmail.com>
>>> To: x2go-user at 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 at 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.
>>>>
>>>>
>>>>
>>>> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>>>> Eskimo North Linux Friendly Internet Access, Shell Accounts, and
>>>> Hosting.
>>>> Knowledgeable human assistance, not telephone trees or script
>>>> readers.
>>>> See our web site: http://www.eskimo.com/ (206) 812-0051 or (800)
>>>> 246-6874.
>>>>
>>>> On Sun, 6 Sep 2015, Harald Heigl wrote:
>>>>
>>>>> Date: Sun, 6 Sep 2015 22:01:48 +0200
>>>>> From: Harald Heigl <Harald.Heigl1000+x2go at gmail.com>
>>>>> To: x2go-user at 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 at 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 at 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 at nwra.com
>>>>>>> Boulder, CO 80301 http://www.nwra.com
>>>>>
>>>>> _______________________________________________
>>>>> x2go-user mailing list
>>>>> x2go-user at lists.x2go.org
>>>>> http://lists.x2go.org/listinfo/x2go-user
>>>>>
>>>>
>>>
>>
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