Am 01.09.2016 um 16:29 schrieb Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>: > On Thu, 01 Sep 2016, Jonathan Corbet <corbet@xxxxxxx> wrote: >> On Wed, 24 Aug 2016 15:35:24 +0200 >> Markus Heiser <markus.heiser@xxxxxxxxxxx> wrote: >> >>> With metadata "parallel_read_safe = True" a extension is marked as >>> save for "parallel reading of source". This is needed if you want >>> build in parallel with N processes. E.g.: >>> >>> make SPHINXOPTS=-j4 htmldocs >> >> A definite improvement; applied to the docs tree, thanks. > > The Sphinx docs say -jN "should be considered experimental" [1]. Any > idea *how* experimental that is, really? Could we add some -j by > default? My experience is, that parallel build is only strong on "reading input" and weak on "writing output". I can't see any rich performance increase on more than -j2 ... Mauro posted [2] his experience with -j8 compared to serial. He also compares -j8 to -j16: > PS: on my server with 16 dual-thread Xeon CPU, the gain with a > bigger value for -j was not impressive. Got about the same time as > with -j8 or -j32 there. I guess he will get nearly the same results with -j2 ;) If we want to add a -j default, I suggest -j2. [2] https://www.mail-archive.com/linux-doc%40vger.kernel.org/msg05552.html -- Markus -- > BR, > Jani. > > > [1] http://www.sphinx-doc.org/en/stable/invocation.html#invocation-of-sphinx-build > > -- > Jani Nikula, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
