Date: Wed, 17 Aug 2016 09:23:27 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 211897] horrible time skew under 10.3-R-p7 Message-ID: <bug-211897-8-oVg6eFwhVW@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-211897-8@https.bugs.freebsd.org/bugzilla/> References: <bug-211897-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211897 --- Comment #8 from Martin S. Weber <freebsd-bugzilla@ayaken.net> --- (In reply to Konstantin Belousov from comment #4) So, I can confirm that unpatched finds my CPU at 4GHz equals 4000 MHz. Sadly there seems to be a random element in -p7 finding my CPU at 4 GHz equ= als 4400 MHz, as my most recent two -p7 boots could not reproduce; I've checked, out of my previous 24 boots (4 of which being -p7) only once (a p7) my CPU = was found to be 4439.49-MHz, all the other times it's 4000.08 +/- 0.01 MHz On a -p7 boot that does not see my CPU as 4.4 GHz I cannot see the massive clock drift I have observed on the one p7 boot. I do not need to adjust my eventtimers & timecounters - it just works. I'll have to wait and see when = the next boot gives me a 4.4 Ghz. Maybe it's windows (I dual boot between work = OS and gaming console) that left something programmed in the CPU (even though I cold-boot between the OS as otherwise my sound & video do funny things). Per Arthur Chance, I note that sysctl.dev.cpu.0.freq_levels outputs (on -p7 that sees my CPU as 4Ghz): dev.cpu.0.freq_levels: 4001/88000 4000/88000 3800/81704 3500/72258 3300/665= 30 3100/60999 2900/55687 2600/48456 2400/43627 2200/39003 1900/32072 1700/27930 1500/23963 1300/20178 1000/15137 800/11779 Not sure where the PR is going, I clearly had the problem once, even though= I cannot reliably reproduce it now. --=20 You are receiving this mail because: You are the assignee for the bug.=
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