Re: [HACKERS] Compile timing - Mailing list pgsql-hackers

From wieck@debis.com (Jan Wieck)
Subject Re: [HACKERS] Compile timing
Date
Msg-id m11U3em-0003kLC@orion.SAPserv.Hamburg.dsh.de
Whole thread Raw
In response to Re: [HACKERS] Compile timing  (Bruce Momjian <maillist@candle.pha.pa.us>)
List pgsql-hackers
> With parallelization, using gmake -j2, I got:
>
>    real    3m8.980s
>    user    2m23.442s
>    sys     0m36.142s
>
> Not sure why -j2 is not faster than normal -j, unless gmake knows to use
> -j2 on a 2-cpu system by default.  Looking at the xps output, I don't
> see multiple compiles being performed by gmake.

    Because it hasn't prallelized :-)

    The  -j2  wasn't  handed  down  to  the submakes and I'm sure
    there's only one started from the top.


Jan

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