Date: Wed, 03 Mar 2004 18:37:48 -0500 From: "Simon" <simon@optinet.com> To: "hardware@freebsd.org" <hardware@freebsd.org> Subject: Xeon w/ L3 1MB cache vs Xeon w/o L3 cache Message-ID: <20040303233733.9402F43D1D@mx1.FreeBSD.org> In-Reply-To: <Pine.BSF.4.44.0403031652530.66510-100000@richard2.pil.net>
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Has anyone done any comparison to see if extra L3 cache on Xeon CPUs provides any benefit to FreeBSD's kernel/core services and various user services' (http/email/ftp/databases) performance? I read that L3 can make things slower instead of faster in cases where L3 is not utilized and the CPU is forced to access it anyway (when L1/L2 don't hold the data it wants), because it exists. Would anyone with personal experience with Xeon CPUs with and without L3 cache comment on the impact of L3 cache. Any links to any related articles would be appreciated, as well. Thank you! -Simon
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