Messages in this thread | | | Date | Fri, 4 Aug 2000 10:47:48 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: DRAM to CPU Frequency Ratio (Athlon) |
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On Fri, 4 Aug 2000, Ookhoi wrote: > > Oke, then I do understand the option. So if I have 133MHz capable > memory, the 4:3 ratio _should_ make a noticeable difference. But it ^^^^^^^_______ Not true at all.
Changing the speed of memory may make a difference if, and only if the machine is memory I/O bound. When compiling the kernel, your machine is quite likely disk I/O bound. Most of your time may be spent waiting for I/O to complete. Any RAM access time is lost in the noise since it's so small by comparison.
A computing system has many of the characteristics of a low-pass filter. The dominant pole in the system's transfer function is set by the slowest device being accessed.
Cheers, Dick Johnson
Penguin : Linux version 2.2.15 on an i686 machine (797.90 BogoMips).
"Memory is like gasoline. You use it up when you are running. Of course you get it all back when you reboot..."; Actual explanation obtained from the Micro$oft help desk.
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