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Date:      Tue, 02 Nov 1999 14:50:42 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        "Daniel M. Eischen" <eischen@vigrid.com>
Cc:        Julian Elischer <julian@whistle.com>, freebsd-arch@freebsd.org
Subject:   Re: Threads models and FreeBSD. (Next Step) 
Message-ID:  <25851.941550642@critter.freebsd.dk>
In-Reply-To: Your message of "Tue, 02 Nov 1999 08:02:08 EST." <381EE0D0.874F6198@vigrid.com> 

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In message <381EE0D0.874F6198@vigrid.com>, "Daniel M. Eischen" writes:

>> There is not much point in making a lightweight process facility
>> if the resulting processes are not lightweight.
>
>And quantum is _the_ attribute that makes them lightweight or non
>lightweight?  They each share file descriptors, address space, etc.

Lack of overhead is what makes the lightweight.

Keeping track of quanta, accounting permissions or anything else
on a "per XXX" basis is "overhead" in this context.

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!




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