Con Kolivas wrote:
On Tue, 12 Jul 2005 21:57, David Lang wrote:
this looks very interesting, however one thing that looks odd to me in
this is the thought of comparing the results for significantly different
hardware.
for some of the loads you really are going to be independant of the speed
of the hardware (burn, compile, etc will use whatever you have) however
for others (X, audio, video) saying that they take a specific percentage
of the cpu doesn't seem right.
if I have a 400MHz cpu each of these will take a much larger percentage of
the cpu to get the job done then if I have a 4GHz cpu for example.
for audio and video this would seem to be a fairly simple scaleing factor
(or just doing a fixed amount of work rather then a fixed percentage of
the CPU worth of work), however for X it is probably much more complicated
(is the X load really linearly random in how much work it does, or is it
weighted towards small amounts with occasional large amounts hitting? I
would guess that at least beyond a certin point the liklyhood of that much
work being needed would be lower)
Actually I don't disagree. What I mean by hardware changes is more along the
lines of changing the hard disk type in the same setup. That's what I mean by
careful with the benchmarking. Taking the results from an athlon XP and
comparing it to an altix is silly for example.
I'm going to cautiously disagree. If the CPU needed was scaled so it
represented a fixed number of cycles (operations, work units) then the
effect of faster CPU would be shown. And the total power of all attached
CPUs should be taken into account, using HT or SMP does have an effect
of feel.
Disk tests should be at a fixed rate, not all you can do. That's NOT
realistic.
--
-bill davidsen ([email protected])
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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