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From: "Buddy Lumpkin" <b.lumpkin@attbi.com>
To: "Rik van Riel" <riel@conectiva.com.br>,
       "Ville Herva" <vherva@niksula.hut.fi>
Cc: "DervishD" <raul@pleyades.net>,
       "Linux-kernel" <linux-kernel@vger.kernel.org>
Subject: RE: About the need of a swap area
Date: Sat, 27 Jul 2002 13:41:49 -0700
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>Much more.
>
>The latency difference seems to be on the order of 100000 times.
>It is the latency we care about because that determines how long
>the CPU cannot do anything useful but has to wait.
>
>Rik


And if you look at the ratio between the access time of ram
which is in the low nanoseconds (1* 10 ^ -9) (data and address must be
present for at least
the rated number of ns to guarantee a sucessful read or write). and compare
it to
the seek + rotational delay of a discrete spindal which is in low
milliseconds (1* 10 ^ -3) that puts you at
a ratio of about 1000000.

regards,

--Buddy

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