james coleman wrote:
.... not much!

also a build making more calls to make can result in
 jfactor * number of make calls jobs

Only if you're using a totally braindead implementation of make. The whole point of the jobserver pipe is to eliminate this fanout problem.

So I might regularily use maybe -j 10 (when I know 10 more calls to make are made) On some machines this might be unacceptable and bring them to their knees.
On other machines it can work really well.
--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/



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