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Re: make doc problem


From: David Kastrup
Subject: Re: make doc problem
Date: Sun, 22 Jan 2012 20:38:47 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux)

Julien Rioux <address@hidden> writes:

> I can't run -j, I have a single core.

This is factually incorrect.  You can run -j just fine, but you can't
expect much of a speedup.  On a single-core machine,

make -j 2

typically gives you a speedup of maybe 15% (given sufficient memory)
since the CPU can keep busy on processing a second job when the other
job is waiting for the disk to provide new input.

More importantly, you'll get to see the same kind of problems that the
true multi-core people experience when using -j.

So very much recommended for testing.

-- 
David Kastrup




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