[X2Go-User] Questions regarding mate/video quailty

Robert Dinse nanook at eskimo.com
Wed Sep 9 22:00:20 CEST 2015


      Just for kicks how about fire up kaffiene firefox on the server and try a 
youtube video?  For playing video locally on the server I usually use kaffeine. 
Since I haven't used vlc or parole, I can't speak for how they work.

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On Wed, 9 Sep 2015, Harald Heigl wrote:

> Date: Wed, 9 Sep 2015 21:54:56 +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
> 
> Ok I try to shorten my mails, since the information you are asking for
> is in my last mail (and in some mails before):
> - ping: < 0.5ms (some peaks every some minutes at 2-3ms), before,
> during and after video
> - iperf (600-700Mbit/s), measured with no load
> - cpu of server at 15-20% while watching video
> - memory: approx 3-4GB (of 6GB) used, swap all free
>
> Could there be a caching problem, is vlc or parole the "wrong" videoplayer?
>
> Thanks,
> Harald
>
> 2015-09-09 20:15 GMT+02:00 Robert Dinse <nanook at eskimo.com>:
>>
>>      Herald, did you ever do the ping as I suggested while trying to watch
>> video to see if perhaps there are some bandwidth / latency issues?
>>
>>      Another thing you might do is run a top on the server and watch the
>> load while you're playing video, from a command line do a free and make sure
>> you're not swapping.
>>
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>>  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 Wed, 9 Sep 2015, Harald Heigl wrote:
>>
>>> Date: Wed, 9 Sep 2015 20:11:29 +0200
>>> From: Harald Heigl <Harald.Heigl1000+x2go at gmail.com>
>>> To: Robert Dinse <nanook at eskimo.com>
>>> Cc: Harald Heigl <Harald.Heigl1000+x2go at gmail.com>,
>>> x2go-user at lists.x2go.org
>>>
>>> Subject: Re: [X2Go-User] Questions regarding mate/video quailty
>>>
>>> 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 at eskimo.com>:
>>>>
>>>>
>>>>      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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>>>>  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, 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
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>> _______________________________________________
>>>>> x2go-user mailing list
>>>>> x2go-user at lists.x2go.org
>>>>> http://lists.x2go.org/listinfo/x2go-user
>>>>>
>>>>
>>>
>>
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