Re: [PATCH] page aging for 2.2.16

Stephen C. Tweedie (sct@redhat.com)
Thu, 8 Jun 2000 15:00:19 +0100


Hi,

On Thu, Jun 08, 2000 at 02:41:26PM +0200, Matthias Andree wrote:
> * Neil Schemenauer (nascheme@enme.ucalgary.ca) [000608 11:21]:
> > I timed a kernel compile with -j 20 to test the cost of the
>
> you mean: make -j 2 MAKE="make -j 10"? Recursive make easily breaks its
> -j option if -j is given a numeric parameter.

On modern versions of Gnu Make, "-j <n>" uses a "jobserver" facility to make
sure that the parent and all child make processes share the same pool of
up to <n> compilation tasks. It handles recursion properly nowadays.

Cheers,
Stephen

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