Re: Linux vs. BSD benchmark

From: Jesper Louis Andersen (none@jlouis--mongers.org.lh.bsd-dk.dk)
Date: Sun 19 Oct 2003 - 23:31:03 CEST

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From: "Jesper Louis Andersen" <none@jlouis--mongers.org.lh.bsd-dk.dk>
Date: Sun, 19 Oct 2003 23:31:03 +0200
To: bsd-dk@bsd-dk.dk
Subject: Re: Linux vs. BSD benchmark

Quoting Jesper Louis Andersen (jlouis@mongers.org):

> Et bud kunne vaere at OpenBSD ikke fokuserer paa at optimere hastighed
> men fokuserer paa korrekt kode. Et andet bud kunne vaere deres W^X
> support, der nok skal goere ondt visse steder. Et tredie bud kunne
> vaere nogen af deres randomization-stunts for at goere det svaert
> at gaette paa ting. Et fjerde bud kunne vaere at Theo har et delay
> i kernen og en underhaandsaftale med Intel.

tedu@ er OpenBSD mand, og det ser ud til at han har let ved at
klare hvorfor mmap performer saa daarligt paa OpenBSD:

http://mail-index.netbsd.org/current-users/2003/10/19/0019.html

Det er ikke mmap-randomization, men derimod manglende UBC[1] der
goer ondt.

[1] Unified buffer caching -
http://www.usenix.org/publications/library/proceedings/usenix2000/freenix/full_papers/silvers/silvers_html/

-- 
j.

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