graphics w/ 2.6.26.3-29 kernel sluggish, 2.6.25.14-108 OK?

Pekka Savola pekkas at netcore.fi
Sat Sep 13 14:19:47 UTC 2008


Hi,

On FC9, after upgrading the kernel to 2.6.26.3-29, I noticed that any 
video (e.g. watching vid on xine or kaffeine) was really sluggish and 
choppy.  CPU usage was very high significant:

  5522 psavola   20   0  295m  94m  60m S 75.4 12.4  24:18.99 kaffeine
  9854 psavola   20   0  335m 120m  94m S 39.1 15.9   0:12.45 xine

Rebooting back to 2.6.25.14-108 halved the CPU usage and made graphics 
work again.  (In general it seems as if in 2.6.26.3 the kernel was 
slow overall but it's difficult to prove.)

Running RadeonHD on AMD Sempron.  I couldn't find any bugs like this 
so I filed it here:

https://bugzilla.redhat.com/show_bug.cgi?id=462180

Anyone else see something like this or have workaround or ideas for 
the cause?

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings




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