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安装系统时使用了参数nohz=off,会一直禁用tickless idle,or not?

发表于 : 2009-08-08 19:52
tune
我的笔记本矽统主板,ati显卡,为了顺利安装,在安装时加了参数nohz=off ,这会禁用tickless idle吗?
为什么用命令cat /boot/config-$(uname -r) | grep CONFIG_NO_HZ查看时,结果为CONFIG_NO_HZ=y(无滴答内核被启用)。
在系统安装时的参数只是在安装时起效吗?

Re: 安装系统时使用了参数nohz=off,会一直禁用tickless idle,or not?

发表于 : 2009-08-08 20:26
tune
另外,我安装power-top之后运行sudo powertop结果为
Cn Avg residency P-states (frequencies)
C0 (cpu running) (34.4%) 2.00 Ghz 1.1%
polling 0.0ms ( 0.0%) 1.67 Ghz 0.3%
C1 mwait 0.0ms (65.6%) 1333 Mhz 0.6%
C2 mwait 0.0ms ( 0.0%) 1000 Mhz 97.9%
C3 mwait 0.0ms ( 0.0%)

Wakeups-from-idle per second : 200885.1 interval: 10.0s
no ACPI power usage estimate available

Top causes for wakeups:
25.9% ( 77.4) USB device 3-1 : USB Optical Mouse (Logitech)
22.2% ( 66.5) acroread : schedule_hrtimeout_range (hrtimer_wakeup)
22.0% ( 65.9) <interrupt> : ohci_hcd:usb3
20.0% ( 60.0) <interrupt> : fglrx[0]@PCI:1:0:0
2.7% ( 8.2) opera : schedule_hrtimeout_range (hrtimer_wakeup)
1.9% ( 5.8) gnome-screensav : schedule_hrtimeout_range (hrtimer_wakeup)

Wakeups-from-idle per second : 200885.1 interval: 10.0s,这个是不是很不正常?