Date: Wed, 02 Mar 2005 14:35:50 -0600 From: Eric Anderson <anderson@centtech.com> To: Nate Lawson <nate@root.org> Cc: freebsd-acpi@freebsd.org Subject: Re: System running hot / CPU freq changes randomly Message-ID: <422623A6.5090605@centtech.com> In-Reply-To: <42261B72.8070602@root.org> References: <42260B46.5010100@centtech.com> <42261B72.8070602@root.org>
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Nate Lawson wrote: > Eric Anderson wrote: > >> I've jsut upgraded from 5.3-STABLE to -CURRENT, and have a few things >> I've noticed. One, my machine runs much hotter - it used to stay >> around 40 - 41C, but not stays around 49C. Also, it actually seems >> like it's running slower - and maybe it is. It looks like the cpu >> frequency is changing all the time, hopping around from one freq to >> another, for no real reason that I can tell. >> I'm running on a dell D600 (1.6GHZ Pentium M), with -CURRENT as of >> last night. >> I can provide any additional information needed.. >> >> >> Here's what I mean (on AC, not battery): >> [ 12:48:25 root@neutrino ~ ]# sysctl dev.cpu.0.freq >> dev.cpu.0.freq: 1600 >> [ 12:48:27 root@neutrino ~ ]# sysctl dev.cpu.0.freq >> dev.cpu.0.freq: 400 >> [ 12:48:28 root@neutrino ~ ]# sysctl dev.cpu.0.freq >> dev.cpu.0.freq: 400 > > > Are you running powerd? If you have powerd_enable="YES" in > /etc/rc.conf, it defaults to adaptive control. I _thought_ I made the > default "NO" until we get more testing. Yes, I am using it. It was default to no, but I enabled it in hopes that it would help battery life and reduce temperature. I realized I didn't really have the settings right, so after setting some lines in rc.conf and restarting powerd, it seems to have stopped flopping around. I'm willing to help debug/test.. >> hw.acpi.cpu.cx_supported: C1/1 C2/1 C3/85 C4/185 >> hw.acpi.cpu.cx_lowest: C1 >> hw.acpi.cpu.cx_usage: 100.00% 0.00% 0.00% 0.00% > > > I had to disable C2 and higher by default due to some C3 problems some > users were having. Hopefully we'll sort this out at some point and > re-enable it by default. > > You can get the old values back through /etc/rc.conf. Add: > > performance_cx_lowest="LOW" > economy_cx_lowest="LOW" > > (Or explicitly use "C3" if C4 doesn't work right for you). These are the settings I have right now: powerd_enable="YES" powerd_flags="-a max -b adaptive" performance_cx_lowest="HIGH" # Online CPU idle state performance_cpu_freq="1600" # Online CPU frequency economy_cx_lowest="LOW" # Offline CPU idle state economy_cpu_freq="NONE" # Offline CPU frequency Did I set something suboptimally? I play with the settings a bit - I'm used to est and estctrl (which I've removed from my system now that I am on 6.0-CURRENT). I'll also try S3 to see if it works on -CURRENT (it rebooted the machine under 5.3-STABLE) - I really want S3 and S4BIOS to work on this laptop, so I'm willing to put some energy into helping anyway I can.. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology I have seen the future and it is just like the present, only longer. ------------------------------------------------------------------------
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