Dne 12.9.2016 v 17:48 Basil Mohamed Gohar napsal(a):
On 09/11/2016 02:19 PM, stan wrote:
> On Sat, 10 Sep 2016 22:04:22 -0400
> Basil Mohamed Gohar <basilgohar(a)librevideo.org> wrote:
>
>
>>> On 09/08/2016 03:44 AM, Basil Mohamed Gohar wrote:
>>>> Even since I installed F24 on both my desktop as well as my laptop
>>>> I've noticed a severe performance degradation in terms of video
>>>> playback.
>
> Is this using a browser, or a player on the system, like vlc or mplayer?
> What does your 'severe performance degradation' consist of? Dropped
> frames? Lock up? Artifacts? Could network congestion or speed be a
> factor? Or do you just mean that the gui is slow to respond?
>
>>>>
>>>> I've noticed this performance issue in both MATE (my preferred DE)
>>>> as well as Gnome. I have AMD CPUs with AMD GPUs (the laptop is an
>>>> APU but also has a discrete card as well).
>>>>
>>>> I don't want to use devel just to report a problem, but I'd also
>
> This really belongs on users. You can subscribe to users by
> sending an email message to
> users-request(a)lists.fedoraproject.org
> with subscribe in the subject line, and from email address
> basilgohar(a)librevideo.org
>
>>>> like some help in diagnosing the issue so that a fix can be found
>>>> – but unfortunately I don't really know where to start.
>
> What does top show happening on your system when you notice the problem?
> How about iotop? Is there lots of disk usage happening? Are there
> things like locate or other search aids running in the background to
> update their databases? Are you updating your system when it seems
> slow? Is your system memory constrained? Other cron scheduled jobs?
> This usually is really heavy early in system usage as they build their
> databases, and then tapers off as only incremental changes are made.
>
> It's unlikely to be due to F24, more likely to be due to your situation.
Personally I'm also interested why the video playback in Firefox is so horrible.
I'm using C2D - this is easily capable to play high bitrate FullHD movies in
mplayer.
Yet it gets chooked by quite low-bandwidth low quality 640-pixel-wide videos
from Youtube.
Doesn't really matter much if the native h265 codec is used or it's passed
through the oldish 'flash' adobe plugin.
Looking at 'perf' trace - it obviously spends ages in libxul - and it's very
quickly passing though ffmpeg library used now by 'ff'.
There is some 'minor' difference between h265/flash playback smoothness -
but none of them is NOWHERE near to be usable.
So whenever I want to see a video playing fluently without using some later
4x3GHz i7 CPU - I simply need to download video and play via mplayer....
I'd love to see some progress here - but it's getting worst with each new
relase of FF - not mentionion 'FF' starts to cut interfaces so less and less
plugins do work. And no I see zero interest of 'ff' group to solve this issue
for Linux - they mostly care purely about windows these days :(....
And of course horrible playback is in '-safe-mode' as well - so no plugin
could be accused for this. As well as I'm using -nodebug Fedora kernels
and latest/greatest SNA xf86 driver.
Regards
Zdenek