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Date: Sun, 11 Jan 2009 10:15:33 +0100 (CET)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Mikel Lindsaar <raasdnil@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Linux binary execution performance hit
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>
> Question, what sort of performance hit does FreeBSD 7.0 have on
> running linux binaries?
>
> The program in question is Ruby, I'm looking at putting ruby compiled
> on a linux box over onto a FreeBSD system so I can take advantage of
> the Oracle Instant client.  But will look at other options if this is
> going to be a lot slower.
>
no it won't be much slower.

linux programs's speed under FreeBSD is comparable to same under linux.

it's not "emulation" in strict sense, rather second ABI.