[55448] in North American Network Operators' Group
Re: Bell Labs or Microsoft security?
daemon@ATHENA.MIT.EDU (E.B. Dreger)
Wed Jan 29 12:26:39 2003
Date: Wed, 29 Jan 2003 17:26:06 +0000 (GMT)
From: "E.B. Dreger" <eddy+public+spam@noc.everquick.net>
To: nanog@merit.edu
In-Reply-To: <20030129131845.GE78231@overlord.e-gerbil.net>
Errors-To: owner-nanog-outgoing@merit.edu
RAS> Date: Wed, 29 Jan 2003 08:18:45 -0500
RAS> From: Richard A Steenbergen
RAS> Possibly that bounds checking is an incredible cpu suck,
If you check before each byte. Checking for sufficient space
first ("is there room for a 245-byte string?") is much faster.
Besides, looking at all the bloated code using indirect function
calls[*] and crappy code using poor algorithms... is speed really
a concern?
[*] Try profiling indirect function calls on x86, especially
newer cores. Such instructions carry a stiff penalty... but
there's no shortage of virtual functions in certain software.
(Think: OWL and MFC libraries.)
Eddy
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