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

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #27 from Barto (mister.freeman@laposte.net) ---
(In reply to Christian König from comment #26)

> Now what I see when I look at your numbers is that user space allocated and
> freed (13608−4514)*2M = 18.1GB of memory while playing youtube videos!.
> 
> This means that either the application or the driver stack is doing
> something very very stupid. Instead of using buffers round robin they are
> allocating them, using them once and then freeing them again.
> 

I made a new test, in order to be sure that there is no mistake ( I disabled
the option ""layers.acceleration.force-enabled" in firefox,

before playing the video :

         pool      refills   pages freed    inuse available     name
           wc          697             0     1344     1444 radeon 0000:01:00.0
       wchuge           26            98        0        6 radeon 0000:01:00.0
       cached         4166         15978      680        6 radeon 0000:01:00.0
   cachedhuge            3             9        0        3 radeon 0000:01:00.0
[root@ultima-dbr cesar]# 


while reading the video ( position 32 seconds ) :

         pool      refills   pages freed    inuse available     name
           wc          783             0     2089     1043 radeon 0000:01:00.0
       wchuge          989          3947        3        6 radeon 0000:01:00.0
       cached         8573         33737      552        3 radeon 0000:01:00.0
   cachedhuge            5            14        0        6 radeon 0000:01:00.0

after reading 38 seconds of the video ( I click to "pause" in youtube at 38
seconds ) :

         pool      refills   pages freed    inuse available     name
           wc          783             0     2285      847 radeon 0000:01:00.0
       wchuge         1153          4607        2        3 radeon 0000:01:00.0
       cached         8675         34143      552        5 radeon 0000:01:00.0
   cachedhuge            5            14        0        6 radeon 0000:01:00.0

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