Messages in this thread | | | Date | Tue, 14 Jul 2015 21:23:31 -0500 | From | Jeff Epler <> | Subject | Re: make -jN (n>1) ineffective in 4.2.0-rc on AMD Phenom |
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GNU Make 4.1 has a problem that causes it to be unable to use the desired level of parallelism. Two people have reported that reverting a commit which changes from fork to vfork "fixes" it. (i'm one of them, unfortunately posting as anonymous in the tracker).
Hoewver, if you are also seeing the linux kernel version as relevant to producing the problem, that's quite interesting, and the underlying cause may be different. We reproduced the problem on a range of older kernels, from 3.2 to 3.18.
http://savannah.gnu.org/bugs/?44555
Jeff
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