Re: [opensuse] 4GB computer slowdown

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The Friday 2007-05-11 at 10:03 -0700, Randall R Schulz wrote:

My guess is that linux tries to use all the capacity the hardware
should have, in order to improve speed and throughput. This also
means that if the hardware fails to do wht it should do, linux will
also fail.

That doesn't really explain it, does it? If there's some subset of a
machine's capabilities not used by Windows but used by Linux, why would
it exactly correspond to that which tends to fail or misfire in all
those cases of systems that run without overt error on Windows but
cause crashes or malfunctions under Linux?

For example, because as windows does not use them, errors are not reported
to the manufacturer. What does it matter if Linux fails? That just a toy
OS, not a serious one; they don't pay us.

For example, because linux tries to get closer to the limits, uses
ignored features that windows doesn't use because it can't (like 32 bits
from the start).

Probably windows is more conservative, uses a more genereic approach
- or they used more faulty harware when testing, or use conservative
generic specifications.

Possible, but it's still not a well-formed idea. Computers are digital
devices. They don't really have any continuous properties, other than,
perhaps, some issues around failure probabilities (or inter-arrival
times) w.r.t. device temperature.

Yes, but not exact.

There are timing constraints of hardware, for instance. If you develop a
driver for a piece of hardware by observing how it works, by trial and
error - because you know that historically hackers had to hack because
manufacturers denied giving their specifications to developers - and
timings have to measured or estimated. If then you put that driver in a
machine that goes a bit slower on those timings, it will fail.

You could ask kernel developers to be more precise on this.

- --
Cheers,
Carlos E. R.

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