On Wed, Oct 03, 2007 at 05:25:37PM -0400, Alan Stern wrote: > On Wed, 3 Oct 2007, Sarah Sharp wrote: > > > On Wed, Oct 03, 2007 at 02:29:49PM +0100, Alan Jenkins wrote: > > > My internet arrives via a USB 2.0 wireless adaptor. > > > Using UHCI instead of EHCI saves ~5 wakeup/s: > > > > > > With ehci_hcd loaded (and not uhci_hcd): > > > 31.1% ( 10.0) <kernel core> : ehci_work (ehci_watchdog) > > > 30.4% ( 9.8) <interrupt> : ehci_hcd:usb5 > > Pardon me, but can somebody explain what those numbers mean? Are they > an average number of interrupts per second?
They're output from powertop (http://www.linuxpowertop.org/). In this case, ehci_work is responsible for 31.1% of all interrupts in the system, and it's averaging 10 interrrupts per second. Sorry for not sending all the context. > > > With uhci_hcd loaded (and not ehci_hcd): > > > 48.0% ( 9.8) <interrupt> : uhci_hcd:usb1 > > > 19.6% ( 4.0) <kernel module> : usb_hcd_poll_rh_status (rh_timer_func) Sarah Sharp ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
