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Bug #609
closedKernel build slower in SMP than in UP
Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
Due date:
% Done:
0%
Estimated time:
Description
nata works fine for me with a UP kernel, and now with SMP, too.
It does not work with SMP + IO_APIC ..
Heh, thanks for the tip!
With just SMP bge and sound are now both working too! :)
Something is still wrong though .. this time perhaps with the scheduler .. :(
doing a kernel build takes almost TWICE as long (wall clock) with an SMP kernel vs
a UP kernel ... and when I watch 'top' during the compile the combined idle times
for the two cores hovers around 90% ..
I can improve things by using -j 4, but it's still slower than building kernel while
running a UP kernel.
Help! :)
Andrew
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