http://bugzilla.kernel.org/show_bug.cgi?id=12788 --- Comment #32 from James Ettle <theholyettlz@xxxxxxxxxxxxxx> 2009-03-26 09:22:20 --- (In reply to comment #29) > Hi, James > Will you please add the boot option of "idle=nomwait" on the latest kernel > and see whether this issue still exists after resume? > Thanks. I tried that option on kernel-2.6.29-3.fc10.x86_64. In this case, the system took quite a bit longer to resume after pressing the power button and was also *very* sluggish. Here's a powertop screenshot: PowerTOP version 1.10 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) (52.9%) 2.11 Ghz 40.4% C0 0.0ms ( 0.0%) 2.10 Ghz 2.2% C1 halt 0.0ms ( 0.0%) 1200 Mhz 1.4% C2 0.1ms ( 0.0%) 800 Mhz 55.1% C3 0.6ms (47.1%) Wakeups-from-idle per second : 847.9 interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 27.3% ( 81.6) <kernel IPI> : Rescheduling interrupts 16.6% ( 49.6) <interrupt> : acpi 14.0% ( 41.9) USB device 6-1 : USB Optical Mouse (Logitech) 13.2% ( 39.4) <interrupt> : uhci_hcd:usb6, firewire_ohci, eth0 3.9% ( 11.7) <interrupt> : ata_piix 3.9% ( 11.6) <interrupt> : uhci_hcd:usb3, mmc0, mmc1, i915@pci:0000:00: 02.0, iwlagn Suggestion: Disable the unused bluetooth interface with the following command: hciconfig hci0 down ; rmmod hci_usb Bluetooth is a radio and consumes quite some power, and keeps USB busy as well. Q - Quit R - Refresh B - Turn Bluetooth off So it looks like the number of wakeups is reduced (I'll run it again later to confirm this), but the C0 residence is still too high for idle and C1 is marked as halt for some reason (is this the reason for the slowness?). Without idle=nomwait, things are as before. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
