[linux-fbdev] Re: readl() and friends and eieio on PPC

Richard Henderson rth at cygnus.com
Sat Aug 14 04:33:51 EST 1999


On Thu, Aug 12, 1999 at 05:07:02PM +1000, Paul Mackerras wrote:
> What numbers do you get on alpha if you point it at a framebuffer,
> just for interest?

With some additional numbers for mb vs wmb --

Memory:
none       15    11    11    11    11
1 wmb      10    10    10    10    10
1 mb      140   129    62    59    59
8 wmb     171   157   101   101   101
8 mb      346   270   270   267   267

Millenium2 fb:
none     2599    11    11    11    11
1 wmb      10    10    10    10    10
1 mb      220   130   139   139   139
8 wmb     192   178   192   192   192
8 mb      538   423   423   423   423



r~

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