From: Bob McElrath <mcelrath@draal.physics.wisc.edu>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Wrong BogoMIPS on alpha
Date: Tue, 4 Sep 2001 10:13:18 -0500 [thread overview]
Message-ID: <20010904101318.B1458@draal.physics.wisc.edu> (raw)
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Recently the bogomips measurement has gone all haywire. Every once in a
while when I boot up the bogomips measurement will be absurly high (i.e.
5 Terahertz), with obvious associated problems. This happens in recent
kernels with both gcc-2.96-81 (redhat) and egcs-2.91.66. It does not
happen with early 2.4 kernels or 2.2 kernels. It does not happen all
the time. It never happens from a cold boot, and (almost) always
happens in a warm reboot. In particular, MILO (which is a stripped-down
linux 2.0 kernel that loads the real kernel) always measures the
bogomips correctly immediately before loading a new kernel that measures
it incorrectly.
The system is:
Alpha LX164 (21164 chip) at 600MHz
Kernels 2.4.7-2.4.9.
Cheers,
-- Bob
Bob McElrath (rsmcelrath@students.wisc.edu)
Univ. of Wisconsin at Madison, Department of Physics
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next reply other threads:[~2001-09-04 15:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-04 15:13 Bob McElrath [this message]
2001-09-05 5:59 ` Richard Henderson
2001-09-14 16:47 ` Ivan Kokshaysky
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