On Friday, 10/27/2006 at 04:12 ZE2, Martin Schwidefsky <[EMAIL PROTECTED]> wrote: > After the BogoMips number has entertained us once again I'm inclined to > "fix" this stupid number.
Yipee! > For replacement we could use the cpu capability that is reported by the > store system information instruction in SYSIB 1.2.2. On our test system > it reports a cpu capability of 1456 (System z type 2094 model 738/S38). > The bogomips number is between ~3400 and ~4000 dependent on the phase of > the moon and the my caffeine-level. With the attached patch the same > number is report every time. Makes sense, doesn't it ? Is it possible to call it the "BogoFactor" instead of BogoMIPS? Esp. since there is no formal definition of the CPU Capability? It seems that you should apply the "adjustment factors" and select the Primary, Secondary, or Alternate CPU capability as appropriate. Also, to quote the book, "a lower value indicates a proportionally higher CPU capacity. Beyond that, there is no formal description of the algorithm used to generate this value." Hmmm... "lower value" ... hmmm.... From that I infer that it is related to cycle time in some undefined way, but that a value of 0 would represent an infinitely "capable" CPU. (I know, I'm making big leaps in my assumptions.) BTW, I *love* the "42" answer on a Really Old Machine! Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
