Date: Wed, 12 Nov 1997 11:41:55 -0800 From: "Mike O'Brien" <obrien@leonardo.net> To: questions@freebsd.org Subject: Variable-speed CPU? Message-ID: <199711121941.LAA00308@mobrien.ni.net>
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I have a Pentium-266 CPU which reported this on boot: CPU: Pentium (166.59-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x543 Stepping=3 Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8> As you can see, this time it claims it's a Pentium-166. Looking back through the log file, we see this: Nov 6 10:53:02 mobrien /kernel: CPU: Pentium (233.22-MHz 586-class CPU) Nov 9 00:56:15 mobrien /kernel: CPU: Pentium (166.59-MHz 586-class CPU) Nov 9 19:54:58 mobrien /kernel: CPU: Pentium (233.22-MHz 586-class CPU) Nov 10 19:56:58 mobrien /kernel: CPU: Pentium (166.59-MHz 586-class CPU) Nov 11 02:19:59 mobrien /kernel: CPU: Pentium (233.22-MHz 586-class CPU) Nov 11 11:05:53 mobrien /kernel: CPU: Pentium (166.59-MHz 586-class CPU) Nov 11 23:18:12 mobrien /kernel: CPU: Pentium (166.59-MHz 586-class CPU) Nov 12 01:29:25 mobrien /kernel: CPU: Pentium (233.22-MHz 586-class CPU) Nov 12 11:09:16 mobrien /kernel: CPU: Pentium (166.59-MHz 586-class CPU) This seems odd, to say the least. I tried reading things in "cpuident.c" and whatnot, and got lost in a welter of CPU counters. Can anyone tell me what this really means? Is my CPU indeed flipping speeds more or less at random? Mike O'Brien
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