[X2Go-User] Questions regarding mate/video quailty

Mon Sep 7 23:24:42 CEST 2015

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.
>
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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 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
>>>>
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>>>
>>
>