Date: Thu, 11 Dec 2003 17:02:44 -0800 (PST) From: Nate Lawson <nate@root.org> To: Lukas Ertl <l.ertl@univie.ac.at> Cc: current@freebsd.org Subject: Re: [acpi-jp 2878] Re: ACPI throttling changes Message-ID: <20031211170144.Q51376@root.org> In-Reply-To: <20031212013059.M599@korben.in.tern> References: <20031209175230.I44055@root.org> <20031211141205.X50937@root.org> <20031212013059.M599@korben.in.tern>
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On Fri, 12 Dec 2003, Lukas Ertl wrote: > On Thu, 11 Dec 2003, Nate Lawson wrote: > > > On Tue, 9 Dec 2003, Nate Lawson wrote: > > > > > > sysctl hw.acpi.cpu.current_speed=X > > > > > > dd if=/dev/zero bs=1m count=500 | md5 > > > > > Haven't gotten any responses to this yet. Would someone who has working > > throttling support apply the patch and test that they can indeed change > > throttling through the sysctl listed above? > > Well, seems to work, but I'm not sure if it works correctly: > > # sysctl hw.acpi.cpu.current_speed=8 > # dd if=/dev/zero bs=1m count=500 | md5 > 524288000 bytes transferred in 10.128099 secs (51765687 bytes/sec) > > # sysctl hw.acpi.cpu.current_speed=4 > # dd if=/dev/zero bs=1m count=500 | md5 > 524288000 bytes transferred in 12.186178 secs (43023169 bytes/sec) > > # sysctl hw.acpi.cpu.current_speed=1 > # dd if=/dev/zero bs=1m count=500 | md5 > 524288000 bytes transferred in 12.127831 secs (43230154 bytes/sec) Send the output of sysctl hw.acpi.cpu. You may only have two throttling states (as shown by hw.acpi.cpu.max_speed). -Nate
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