[distcc] Simple way to get SMP scalability

[Jonas Jensen]

The distcc docs discuss a lot about the problems when one machine has
several CPUs, and the conclusion is that if one of your machines is a
4-way SMP you have to run 4 processes on all the other machines too.
Here's a 3-line proof-of-concept patch for my proposed solution: if a is
4-way, and b and c are UP you'll set
DISTCC_HOSTS='1%a 2%a 3%a 4%a b c'
and just run one or two processes per "host". What comes before the %
sign can be anything, the important thing is that it's different for
each processor so that different lockfiles are used.

Wouldn't something like this work?

/Jonas Jensen
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