[X2Go-User] Centos 7

[Mihai Moldovan]

On 04.04.2015 01:53 AM, Robert Dinse wrote:
>      Thank you.  Duh I don't know how I could stare at that directory
> and not
> notice the missing extension.  Ugh.

You're not alone, this stuff happens to me too... More often than I'd like.


>      Thank you for your help.  The 3.19.3 kernel I built is not only
> preemptive but also stripped of most of the stuff I don't use.  I also
> turn off most of the kernel hacking and profiling stuff since it adds
> a tiny bit of overhead.
>
>      It helped considerably over either the stock kernel or the one
> off of
> el repo (the el repo 3.19.3-ml kernel), however the video isn't 100%
> fluid.
>
>      With the el repo kernel I got around maybe 10 frames per second,
> with
> my custom kernel I get around 30 frames per second most of the time
> but there
> are occasional glitches where the video will freeze for maybe a third
> of a
> second.
>
>      Under Ubuntu, a kernel built the same way, the video is fluid. 
> There
> must be something in CentOS eating more resources.

I wouldn't be sure about the "eating more resources" part. Unless
something spikes in top/htop, maybe. But given you've tried with a rt
kernel as provided by Ubuntu, there are multiple other things to consider:

  - the Ubuntu kernel was patched by Canonical (most of the time quite
heavily when comparing a vanilla kernel to a stock Ubuntu kernel)
  - the Ubuntu kernel may *additionally* include other RT patches that
are neither part of their stock, nor the vanilla kernel
  - it may use different options from what you have

There's a good chance this influences what you're seeing.

If you really want to find out what leads to this differing behavior,
you're in for a ride (and quite possibly a rather frustrating one, too.)



Mihai

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