Date: Tue, 27 Sep 2005 13:16:40 +0700 From: Bachilo Dmitry <root@solink.ru> To: freebsd-current@freebsd.org Subject: Re: Invalid detection CPU frequency ? Message-ID: <200509271316.41339.root@solink.ru> In-Reply-To: <1127801205.1268.9.camel@localhost> References: <1127801205.1268.9.camel@localhost>
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=F7 =D3=CF=CF=C2=DD=C5=CE=C9=C9 =CF=D4 =F7=D4=CF=D2=CE=C9=CB 27 =F3=C5=CE= =D4=D1=C2=D2=D8 2005 13:06 Vladimir Grebenschikov=20 =CE=C1=D0=C9=D3=C1=CC(a): > Hi > > It looks strange but sometimes my notebook start on full-speed (1.7GHz) > and sysctls output looks like: > > dev.cpu.0.%desc: ACPI CPU > dev.cpu.0.%driver: cpu > dev.cpu.0.%location: handle=3D\_PR_.CPU0 > dev.cpu.0.%pnpinfo: _HID=3Dnone _UID=3D0 > dev.cpu.0.%parent: acpi0 > dev.cpu.0.freq: 1687 > dev.cpu.0.freq_levels: 1687/-1 1476/-1 1265/-1 1054/-1 843/-1 632/-1 421/= =2D1 > 210/-1 dev.acpi_throttle.0.%desc: ACPI CPU Throttling > dev.acpi_throttle.0.%driver: acpi_throttle > dev.acpi_throttle.0.%parent: cpu0 > dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/= =2D1 > 3750/-1 2500/-1 1250/-1 dev.acpi_sony.0.brightness: 8 > dev.acpi_sony.0.ctr: 0 > dev.acpi_sony.0.pcr: 0 > dev.acpi_sony.0.wdp: 1281 > dev.acpi_sony.0.cdp: 1 > dev.acpi_sony.0.%desc: Sony notebook controller > dev.acpi_sony.0.%driver: acpi_sony > dev.acpi_sony.0.%location: handle=3D\_SB_.PCI0.LPCB.SNC_ > dev.acpi_sony.0.%pnpinfo: _HID=3DSNY5001 _UID=3D0 > dev.acpi_sony.0.%parent: acpi0 > > And sometimes it starts on low speed (~500 Mhz) > dev.cpu.0.%desc: ACPI CPU > dev.cpu.0.%driver: cpu > dev.cpu.0.%location: handle=3D\_PR_.CPU0 > dev.cpu.0.%pnpinfo: _HID=3Dnone _UID=3D0 > dev.cpu.0.%parent: acpi0 > dev.cpu.0.freq: 595 > dev.cpu.0.freq_levels: 595/-1 520/-1 446/-1 371/-1 297/-1 223/-1 148/-1 > 74/-1 dev.acpi_throttle.0.%desc: ACPI CPU Throttling > dev.acpi_throttle.0.%driver: acpi_throttle > dev.acpi_throttle.0.%parent: cpu0 > dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/= =2D1 > 3750/-1 2500/-1 1250/-1 dev.acpi_sony.0.brightness: 8 > dev.acpi_sony.0.ctr: 0 > dev.acpi_sony.0.pcr: 0 > dev.acpi_sony.0.wdp: 1281 > dev.acpi_sony.0.cdp: 1 > dev.acpi_sony.0.%desc: Sony notebook controller > dev.acpi_sony.0.%driver: acpi_sony > dev.acpi_sony.0.%location: handle=3D\_SB_.PCI0.LPCB.SNC_ > dev.acpi_sony.0.%pnpinfo: _HID=3DSNY5001 _UID=3D0 > dev.acpi_sony.0.%parent: acpi0 > > And speed can't be raised by powerd or other. > Looks like it happens when notebook stats or shutdowns on batteries. > Rebooting on AC power cures situation. But anyway - I do not think it is > normal. > > Any suggestions ? > > I run 7-CURRENT here (19 Sep 05). > > powerd also enbled with default setup: > % fgrep powerd /etc/rc.conf > powerd_enable=3D"YES" # Run powerd to lower our power usage. > % Well, it's BIOS who tells to BSD what is your CPU's speed. And when you sta= rt=20 on battery, the throttle function reduces performance, and BSD gets reduced= =20 speed from BIOS. In my notebook's BIOS there is an option witch sets thrott= le=20 to 50%, 25% or turns this function off. So switch it off and it will solve= =20 the problem. Best Regards Bachilo Dmitry
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