Date: Mon, 09 Jun 1997 21:53:37 -0700 From: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net> To: Chuck Robey <chuckr@glue.umd.edu> Cc: Steve Passe <smp@csn.net>, Tom Samplonius <tom@sdf.com>, freebsd-hardware@freebsd.org Subject: Re: fastest possible FreeBSD system? Message-ID: <199706100453.VAA14910@MindBender.serv.net> In-Reply-To: Your message of Mon, 09 Jun 97 23:53:25 -0400. <Pine.BSF.3.96.970609235150.323k-100000@Journey2.mat.net>
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>> > What about the difference between a PPro with 256k onchip cache, as
>> >opposed to 512k onchip cache?
>> I haven't seen anything definative on this yet. Since you can't turn off
>> the top 256k cache its hard to find otherwise identical setups for a fair te
st.
>Steve, since the PPro cache is accessed at the clock rate, and the Pentium
>II cache is accessed at the bus rate, I would think the PPro would win
>hands down, in performance, no?
I thought the Pentium II L2 cache ran at half the CPU core rate, not
the bus rate (i. e. 116.5MHz for a 233, not 66Mhz).
Add to the above that the L2 cache is still non-blocking up to four
outstanding transactions, and can fetch out-of-order, you still have
advantages in the cache over, say, a Pentium L2 cache.
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Michael L. VanLoon michaelv@MindBender.serv.net
--< Free your mind and your machine -- NetBSD free un*x >--
NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
NetBSD ports in progress: PICA, others...
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