2009/7/28 Yoshihiro Ota <ota_at_j.email.ne.jp>: > On Fri, 24 Jul 2009 01:23:18 +0200 > Ståle Lyngaas <staale_at_lyngaas.com> wrote: > >> On Sat, Feb 21, 2009 at 11:01 AM, Garrett Cooper<yanefbsd_at_gmail.com> wrote: >> > I don't know how else to describe it, but when I turn up my >> > speakers enough (50%+) and don't have any sound playing, I hear a >> > whitenoise hiss coming out of them. When I change webpages (nvidia >> > driver is GIANT locked) or do something else kernel intensive it stops >> > for a brief second, but apart from that it's an annoying trill sound >> > almost like a mosquito humming around me waiting to be swatted. >> >> I suspect this is due to the CPU executing the HLT instruction. >> >> Try running the following command: >> sysctl machdep.cpu_idle_hlt=0 >> >> -- >> Ståle Lyngaas > > I couldn't find such a sysctl. > The close one was machdep.cpu_hlt. Setting machdep.idle from acpi to spin make my problems go away. (None of the other options (mwait, mwait_hlt, hlt, acpi) helped.) -Ben KadukReceived on Wed Jul 29 2009 - 21:26:31 UTC
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