# powertop -d PowerTOP 1.12 (C) 2007, 2008 Intel Corporation Collecting data for 15 seconds
Your CPU supports the following C-states : C1 C2 C3 C4 Your BIOS reports the following C-states : C1 C2 C3 Cn Avg residency C0 (cpu running) (31.1%) C0 0.0ms ( 0.0%) C1 mwait 0.0ms ( 0.0%) C2 mwait 0.1ms ( 0.0%) C3 mwait 4.8ms (68.9%) P-states (frequencies) Turbo Mode 15.7% 2.00 Ghz 0.1% 1.60 Ghz 0.1% 1200 Mhz 0.2% 800 Mhz 84.0% Disk accesses: The application 'firefox-bin' is writing to file 'sessionstore-1.js' on /dev/sda1 The application 'firefox-bin' is writing to file 'sessionstore-1.js' on /dev/sda1 The application 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1 The application 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1 The application 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1 Wakeups-from-idle per second : 145.1 interval: 15.0s no ACPI power usage estimate available Top causes for wakeups: 71.1% (296.3) [kernel scheduler] Load balancing tick 7.7% ( 32.2) [Rescheduling interrupts] <kernel IPI> 3.7% ( 15.3)D firefox-bin 3.9% ( 16.3) [acpi] <interrupt> 3.3% ( 13.9) [iwlagn] <interrupt> 2.5% ( 10.5) [i...@pci:0000:00:02.0] <interrupt> 2.3% ( 9.5) PS/2 keyboard/mouse/touchpad interrupt 1.0% ( 4.3) Xorg 1.0% ( 4.0) [kernel core] usb_hcd_poll_rh_status (rh_timer_func) 0.9% ( 3.6) [ahci] <interrupt> 0.6% ( 2.6) [kernel core] hrtimer_start (tick_sched_timer) 0.3% ( 1.2) gnome-terminal 0.2% ( 1.0) gvfs-afc-volume 0.2% ( 0.7) top 0.2% ( 0.7) compiz 0.1% ( 0.5) python 0.1% ( 0.4) update-notifier 0.1% ( 0.3) [eth1] <interrupt> 0.1% ( 0.3) events/0 0.1% ( 0.3) [kernel core] inc_rt_group (sched_rt_period_timer) 0.1% ( 0.3) clock-applet 0.0% ( 0.2) gnome-settings- 0.0% ( 0.2) indicator-apple 0.0% ( 0.2) gnome-panel 0.0% ( 0.2) gnome-power-man 0.0% ( 0.2) bdi-default 0.0% ( 0.2) flush-8:0 0.0% ( 0.2) rtkit-daemon 0.0% ( 0.1) [kernel core] sk_reset_timer (tcp_delack_timer) 0.0% ( 0.1) [kernel core] arm_supers_timer (sync_supers_timer_fn) 0.0% ( 0.1) NetworkManager 0.0% ( 0.1) rmmod 0.0% ( 0.1) sshd 0.0% ( 0.1) [kernel core] neigh_add_timer (neigh_timer_handler) 0.0% ( 0.1) khungtaskd 0.0% ( 0.1) [kernel core] add_timer (addrconf_verify) 0.0% ( 0.1) events/1 0.0% ( 0.1) ssh-agent 0.0% ( 0.1) gnome-volume-ma 0.0% ( 0.1) [kernel core] add_timer (sta_info_cleanup) 0.0% ( 0.1) kerneloops 0.0% ( 0.1) [kernel core] fib6_run_gc (fib6_gc_timer_cb) 0.0% ( 0.1) rsyslogd A USB device is active 100.0% of the time: USB device 3-1 : BCM2045B (Broadcom Corp) Suggestion: Enable USB autosuspend for non-input devices by pressing the U key Suggestion: increase the VM dirty writeback time from 5.00 to 15 seconds with: echo 1500 > /proc/sys/vm/dirty_writeback_centisecs This wakes the disk up less frequently for background VM activity Suggestion: Enable SATA ALPM link power management via: echo min_power > /sys/class/scsi_host/host0/link_power_management_policy or press the S key. The program 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1. This prevents the disk from going to powersave mode. The program 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1. This prevents the disk from going to powersave mode. The program 'firefox-bin' is writing to file '_CACHE_001_' on /dev/sda1. This prevents the disk from going to powersave mode. The program 'firefox-bin' is writing to file 'sessionstore-1.js' on /dev/sda1. This prevents the disk from going to powersave mode. The program 'firefox-bin' is writing to file 'sessionstore-1.js' on /dev/sda1. This prevents the disk from going to powersave mode. Recent USB suspend statistics Active Device name 0.0% USB device 3-2 : Biometric Coprocessor (STMicroelectronics) 100.0% USB device 3-1 : BCM2045B (Broadcom Corp) 0.0% USB device usb6 : UHCI Host Controller (Linux 2.6.32-14-generic uhci_hcd) 0.0% USB device usb5 : UHCI Host Controller (Linux 2.6.32-14-generic uhci_hcd) 0.0% USB device usb4 : UHCI Host Controller (Linux 2.6.32-14-generic uhci_hcd) 100.0% USB device usb3 : UHCI Host Controller (Linux 2.6.32-14-generic uhci_hcd) 0.0% USB device usb2 : EHCI Host Controller (Linux 2.6.32-14-generic ehci_hcd) 0.0% USB device usb1 : EHCI Host Controller (Linux 2.6.32-14-generic ehci_hcd) Recent audio activity statistics Active Device name 0.0% hwC0D0 Analog Devices AD1984 Recent SATA AHCI link activity statistics Active Partial Slumber Device name -- Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo with 1 core disabled in BIOS https://bugs.launchpad.net/bugs/524281 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
