Re: how is system geared down?

["Nathan M. Andelin" <nathanma@xxxxxxxxx>]

> From: "Alexei Pytel" <pytel@us.ibm.com>

>You can use the same CPU chip and have
> systems with different performance ...

That's easy to understand.  "Systems" have many points where bottlenecks can
occur.  But the real puzzle is why a 200 Mhz CPU offers the same throughput
as a 50 Mhz CPU, for example.  Again, it's not "system" throughput that's
puzzling some of us, but "CPU" throughput.  An explanation of how memory,
cache, paging, disk I/O, etc. might affect system throughput only clouds the
issue.  Customers can add memory, add disks, perform tuning to adjust
paging, and design or configure software to achieve optimum system
performance.  But a customer apparently can't do anything to change CPU
speed.  The real puzzle is with CPU performance, not system performance.

Thanks,

Nathan.


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