From mboxrd@z Thu Jan 1 00:00:00 1970 In-Reply-To: <38349F1A.8AECF96F@wanadoo.fr> Date: Fri, 19 Nov 1999 11:25:22 +0100 To: Martin Costabel , linuxppc-dev@lists.linuxppc.org From: Benjamin Herrenschmidt Subject: Re: Extreme swapping / new location of Paul's kernels [was Re: Kernel debugging??] Message-Id: <19991119112522.020925@mailhost.mipsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Fri, Nov 19, 1999, Martin Costabel wrote: > kernel: Calibrating delay loop... 133.12 BogoMIPS > >Booting with BootX-1.2b2, I get with the same kernels > > kernel: Calibrating delay loop... 11.39 BogoMIPS > >This is repeatable, but for me quite incomprehensible. Ouch. Could this be a problem with VIA-based calibration in the kernel ? Paul ? Any clue ? I don't see what in BootX could cause this to happen, probably MacOS playing tricks with the VIA behind my back... I just looked at the calibration code, and it looks ok, except if interrupts are enabled during the calibration (Actually, I don't know if MSR-EE is enabled at this point, I should really add code to BootX that masks all interrupts in the controller before launching the kernel anyway). If I remember correctly, Martin, your machine has a 603. There is a possibility that, for some reason, MacOS changes the PLL settings in HID1 (but I don't really see why this would happen with BootX 1.2x and not with previous versions). ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/