Re: Bottlenecks

Mxsmanic <mxsmanic@xxxxxxxxx> wrote
Jure Sah writes

Say a 4 CPU motherboard (I haven't seen any with more CPUs on them,
short of clusters), each dual core and each equiped with 4 GB of RAM.
You are then looking at an operating system that can handle all that
and you have a basic modern server system. But that is not the
ultimate computer.

What is this obsession with CPUs? CPU speed
is rarely a bottleneck in modern systems.

Those expensive controllers have a DDR memory slot for disk cache
alone, so you're basically looking at 1 GB of hardware disk cache,
and thus disk transfers, of about the same as the maximum data rate
of your bus of choice, for all bursts of transfers up to 1 GB.

Transfer rates are not the problem with disks.

They are for some ops like imaging and copying and editing large files.

Access time is the problem.

Sometimes it is, often it isnt.


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