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Date:      Sun, 12 Nov 2006 20:13:31 +0100
From:      Ivan Voras <ivoras@freebsd.org>
Cc:        threads@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: libpthread vs libthr.
Message-ID:  <4557725B.2060804@freebsd.org>
In-Reply-To: <4557434C.7080106@elischer.org>
References:  <20061110151247.GA64530@zone3000.net>	<3aaaa3a0611111503m319808c u7e1f710970350044@mail.gmail.com> <4557434C.7080106@elischer.org>

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Julian Elischer wrote:

> this is interesting.. there has been a call to remove "fairness"
> as a threading property as it complicates the scheduler.
> It has been said by many that they do not consider this as an important
> feature and it reduces throughput.

IMO both sides are right and fairness should be optional. It will
certainly help some workloads and harm others; leaving it as a (default)
kernel compile option is fine for now, as long as it's documented how to
toggle it (in pthread man page at least).



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