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Date:      Fri, 20 Aug 1999 19:30:38 -0400 (EDT)
From:      Mikhail Teterin <mi@aldan.algebra.com>
To:        stable@freebsd.org
Subject:   Re: installworld : problem 2 (parallelism: -j 2/3/4)
Message-ID:  <199908202330.TAA00830@misha.cisco.com>
In-Reply-To: <19990820141256.F2131@futuresouth.com> from "Matthew D. Fuller" at "Aug 20, 1999 02:12:56 pm"

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Matthew D. Fuller once wrote:

> > On my  dual CPU  system installworld  fails when  run with  -j flag.
> > Buildworld is  fine with  `-j 8', but  installworld does  not handle
> > even `-j 2'. Here is the tail of the -j2 run:
 
> Out of  morbid curiosity, why  exactly do you run  -j'd installworlds?
> Installworld  is practically  100%  diskbound, I'd  expect  it to  run
> SLOWER  when it's  parallelizing and  seeking back  and forth  between
> multiple installs at once.

I did not run actual comparisions, but  it would seem, there is some CPU
work during  installworld, especially with the  -C flag. In any  case, I
usually do ``make world''  and the -j flag applies to  both -- build and
install.

	-mi


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