Re: [HACKERS] Compile timing

From: wieck(at)debis(dot)com (Jan Wieck)
To: maillist(at)candle(dot)pha(dot)pa(dot)us (Bruce Momjian)
Cc: wieck(at)debis(dot)com, lamar(dot)owen(at)wgcr(dot)org, pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Compile timing
Date: 1999-09-23 07:51:08
Message-ID: m11U3em-0003kLC@orion.SAPserv.Hamburg.dsh.de
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> 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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# It's easier to get forgiveness for being wrong than for being right. #
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