[Bug 198511] lags in youtube videos 1080p 60fps with radeon hd4650 and kernel 4.15rc8

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=198511

--- Comment #21 from Christian König (christian.koenig at amd.com) ---
(In reply to Barto from comment #18)
>          pool      refills   pages freed    inuse available     name
>            wc          801             0     2834      370 radeon
> 0000:01:00.0
>        wchuge         1079          4307        6        3 radeon
> 0000:01:00.0
>        cached        10663         42097      552        3 radeon
> 0000:01:00.0
>    cachedhuge            6            19        0        5 radeon
> 0000:01:00.0
> 
> I will try to compile kernel 4.15rc8 with CONFIG_SWIOTLB disabled

Can you also give me those numbers before, while and after you played a video
on youtube? Especially what are the number of refills and pages freed before,
while and after you play the video?

It starts to look more like that this isn't an issue in the kernel, but rather
the userspace stack or application is constantly allocating and freeing memory.

Best approach would be to gather the "while you play the video" numbers from a
separate system over ssh, because when you put the firefox window into the
background it can change the results.

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