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Subjecta nohup-like interface to cpu affinity
Robert and Ingo,
A nohup-like interface to the cpu affinity service would be useful. It
could work like the
following example:

$ cpuselect -c 1,3-5 gcc -c module.c

which would restrict this instantiation of gcc and all of its children to
cpus 1,3,4, and 5. This
tool can be implemented in a few lines of C, with either /proc or syscall
as the underlying
implementation.

On another subject -- capabilities -- any process should be able to reduce
the number of
cpus in its own cpu affinity mask without any special permission. To add
cpus to a
reduced mask, or to change the cpu affinity mask of other processes, should
require
the appropriate capability, be it CAP_SYS_NICE, CAP_SYS_ADMIN, or whatever
is decided.

Joe

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