After a regular restart it again shows the incorrect value.
I ran three passes with XBench (2 w/incorrect #showing & 1 w/correct #showing) All three passes were with 1.75 points of each other.
Also, with regard to resetting the PMU. On the Apple support site they seem to imply that this is something that one should periodically.
It says: "Over time, the settings in the Power Manager may become unusable, which can result in operational anomalies with the computer. Examples include
not turning on, not waking from sleep, not charging the battery, or not seeing the AC Adapter, among others"
I also came across a couple of statements in other forums regarding the sysctl hw.cpufrequency command:
1) hw.cpufrequency is no official parameter for sysctl. It is not listed in the man page.
2) speeds began to be displayed incorrectly starting with 10.2.8
3) one person created a console app & obtained the value straight from the underlying BSD API. It returned the correct cpu frequency everytime no matter what the sysctl utility said. He also said that it would be easy to check the Darwin source code to see where the sysctl utility is going wrong.
So there you have it. As far as the XBench numbers are concerned, I think it is fair to say that they show no real differences and that XBench is a fairly rigorous benchmark. As far as the rest, I open to ideas, comments, suggestions, etc.
If anyone runs through the same process that I did to check the speed please be so kind and post your findings. Also, if anyone can verify #s 1 & 2 that would be great.
My general feeling is that the sysctl is returning the wrong number. I have checked with two other friends (867 TiPB & 867 12 Al PB) In the case of the TiBook he returned a
number of 667 (same as my 1g TiBook) and in the case of the 12 he returned a value of 553.
Any and all commentary is appreciated. I personally would not mind a definitive answer.
William
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