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From: Scott Long <scottl@freebsd.org>
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To: Dag-Erling Smorgrav <des@freebsd.org>
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Subject: Re: cvs commit: src/usr.bin/make main.c
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Date: Sat, 13 Dec 2003 22:35:08 -0000
X-Original-Date: Sat, 13 Dec 2003 15:33:44 -0700
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Dag-Erling Smorgrav wrote:
> des         2003/12/13 07:26:27 PST
> 
>   FreeBSD src repository
> 
>   Modified files:
>     usr.bin/make         main.c 
>   Log:
>   Install a SIGCHLD handler so select(2) will be interrupted when a child
>   terminates.  Without this patch, 'make -j1 buildworld' takes about 30%
>   longer than 'make -B buildworld' on my 2.4 GHz P4; the difference is
>   probably even larger on faster systems.  With this patch, there is no
>   perceptible difference in wall time between the two.
>   
>   Submitted by:   bde
>   MFC after:      3 days
>   
>   Revision  Changes    Path
>   1.86      +20 -0     src/usr.bin/make/main.c
> 

Holy crap, this is cool.  Thanks a lot for doing this.  Does this mean 
that the poll interval (for checking child status) can be changed from
100ms back to something more reasonable?

Scott