Date: 24 Jul 2003 00:07:23 +0200 From: "Georg-W. Koltermann" <g.w.k@web.de> To: freebsd-current@freebsd.org Subject: still data corruption with 5.1-R on Intel Pentium 4 Message-ID: <1058998043.628.77.camel@bat.localnet>
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There have been threads about data corruption in RAM on P4 and other i386 machines on this list. I also observed the problem, on my laptop with 5.0-R. It seemed to go away with 5.1-R, on the laptop. Recently I upgraded my home PC which is a P4 2.0A from 4.8-R to 5.1-R. No problems at first. Until I ran "portsdb -Uu". I got a couple mysterious SIG4 and SIG11. Just to be sure I rebooted and tried again, same result. I rebooted another time, this time with ACPI disabled, and tried again, still the same. Then I rebuilt my kernel with options DISABLE_PSE and DISABLE_PG_G, as suggested by Terry in the old threads: Bingo, everything is fine now, no more SIG4 or SIG11 during portsdb -Uu. It seems the workarounds that we have in 5.1-R are not effective enough. What do you think? -- Regards, Georg.
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