Lan Barnes wrote:
On Wed, April 30, 2008 3:43 pm, Mark Schoonover wrote:
On Wed, Apr 30, 2008 at 3:27 PM, Michael J McCafferty
<[EMAIL PROTECTED]> wrote:
Nevermind the cheap space... tell me about the power you saved !
Power, and cooling.
I'm confused (in Linux) on how this saves, since I would expect that
throughput, memory, and context switching on VM boxen would _at best_ only
equal running all those services on one box. What am I missing?
Doesn't it add up to the same number of instructions per time uint, the
same memory load, the same disk space (except VM should need marginally
more for context switching)?
Pretty much. However, power dissipation in a computer system is mostly
going to non-work activities. Losses in power supplies, simply keeping
the microprocessor clock grid running, keeping the disks spun up, etc.
The differential between work and non-work is often not that high.
Consequently, making the system work harder moves the waste/useful ratio
in the correct direction.
-a
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