On Sat, Dec 11, 2021 at 10:32 PM David Gow davidgow@google.com wrote:
The --jobs parameter for kunit_tool currently defaults to 8 CPUs, regardless of the number available. For systems with significantly more (or less), this is not as efficient. Instead, default --jobs to the number of CPUs available to the process: while there are as many superstitions as to exactly what the ideal jobs:CPU ratio is, this seems sufficiently sensible to me.
A new helper function to get the default number of jobs is added: get_default_jobs() -- this is used in kunit_tool_test instead of a hardcoded value, or an explicit call to len(os.sched_getaffinity()), so should be more flexible if this needs to change in the future.
Signed-off-by: David Gow davidgow@google.com
Reviewed-by: Brendan Higgins brendanhiggins@google.com