Date: Fri, 01 Aug 2014 20:34:21 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 192315] high load average while idle, slow keyboard reaction Message-ID: <bug-192315-8-RYWWzfIPKy@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-192315-8@https.bugs.freebsd.org/bugzilla/> References: <bug-192315-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192315 --- Comment #5 from Alexander Motin <mav@FreeBSD.org> --- (In reply to Steve Wills from comment #3) > (In reply to Alexander Motin from comment #1) > > Line "Event timer "LAPIC" quality 400" in verbose dmesg tells that LAPIC > > timer in your CPU (used by default) is not compatible with CPU C-states > > (deep idle states). Can you make sure that C-states are not used on your > > system by checking 'sysctl dev.cpu | grep cx_usage' and 'sysctl -a | grep > > cx_lowest'? > > > > Timer code was not changing for quite some time already, while C-states were > > enabled by default less time ago, IIRC. > > meatwad% sysctl dev.cpu | grep cx_usage > dev.cpu.0.cx_usage: 15.53% 82.84% 1.61% last 149us > dev.cpu.0.cx_usage_counters: 1509220 8046504 156453 > dev.cpu.1.cx_usage: 15.21% 77.78% 6.99% last 1803us > dev.cpu.1.cx_usage_counters: 462080 2361986 212335 > dev.cpu.2.cx_usage: 15.54% 78.02% 6.43% last 1601us > dev.cpu.2.cx_usage_counters: 542112 2721324 224459 > dev.cpu.3.cx_usage: 14.02% 79.92% 6.05% last 1014us > dev.cpu.3.cx_usage_counters: 496716 2831459 214487 > dev.cpu.4.cx_usage: 16.10% 77.77% 6.11% last 5971us > dev.cpu.4.cx_usage_counters: 467800 2258637 177471 > dev.cpu.5.cx_usage: 15.24% 77.76% 6.99% last 612us > dev.cpu.5.cx_usage_counters: 462824 2361157 212369 > dev.cpu.6.cx_usage: 19.44% 74.33% 6.21% last 872us > dev.cpu.6.cx_usage_counters: 640034 2446184 204690 > dev.cpu.7.cx_usage: 15.40% 79.04% 5.55% last 51us > dev.cpu.7.cx_usage_counters: 464464 2382488 167297 > meatwad% sysctl -a | grep cx_lowest > hw.acpi.cpu.cx_lowest: C8 > dev.cpu.0.cx_lowest: C8 > dev.cpu.1.cx_lowest: C8 > dev.cpu.2.cx_lowest: C8 > dev.cpu.3.cx_lowest: C8 > dev.cpu.4.cx_lowest: C8 > dev.cpu.5.cx_lowest: C8 > dev.cpu.6.cx_lowest: C8 > dev.cpu.7.cx_lowest: C8 > meatwad% > > Note this is after setting kern.eventtimer.timer=HPET as mentioned > previously. If it matters, I can undo that and run these again. That does not tell much after you enabled HPET, except that your system does have C-states. Reboot without switching to HPET and check again. If C-states block working, you should not see states deeper then C1 used even if enabled. -- You are receiving this mail because: You are the assignee for the bug.
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