CPU issues with Speakup

[William Hubbs]

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On Fri, May 29, 2009 at 11:12:39AM -0500, Chris Brannon wrote:
> I am attaching the output from an execution of "powertop -d" on my
> system.  During this run, espeakup had an average of 1669.1 wakeups / second.
 
Ok, I know what is happening here.  Espeakup is using a select() call to
read the softsynth with a timeout of 1 microsecond, so that would be
about right.  The issue is with espeakup, not speakup.  I will take a
look at how I am using the select call.

> PowerTOP 1.11   (C) 2007, 2008 Intel Corporation 
> 
> Collecting data for 15 seconds 
> 
> 
> < Detailed C-state information is not available.>
> P-states (frequencies)
> Wakeups-from-idle per second : 2075.9	interval: 15.0s
> no ACPI power usage estimate available
> Top causes for wakeups:
>   80.4% (1669.1)          espeakup : hrtimer_start_range_ns (hrtimer_wakeup) 
>   14.9% (309.2)       <interrupt> : VIA8237 
>    2.5% ( 51.1)       <interrupt> : ra0 
>    1.3% ( 26.3)     <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
>    0.4% (  8.0)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func) 
>    0.2% (  3.3)       <interrupt> : PS/2 keyboard/mouse/touchpad 
>    0.1% (  2.0)     <kernel core> : clocksource_register (clocksource_watchdog) 
>    0.1% (  1.5)             emacs : synth_printf (thread_wake_up) 
>    0.0% (  1.0)            dhcpcd : MlmeInit (MlmePeriodicExec) 
>    0.0% (  0.3)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) 
>    0.0% (  0.3)   <kernel module> : neigh_table_init_no_netlink (neigh_periodic_timer) 
>    0.0% (  0.2)       <interrupt> : sata_via 
>    0.0% (  0.2)              init : hrtimer_start_range_ns (hrtimer_wakeup) 
>    0.0% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn) 
>    0.0% (  0.1)             kinit : start_this_handle (commit_timeout) 
>    0.0% (  0.1)          events/0 : queue_delayed_work (delayed_work_timer_fn) 
>    0.0% (  0.1)               mpd : announce_edge (kd_nosound) 
>    0.0% (  0.1)     <kernel core> : announce_edge (kd_nosound) 
> 

> _______________________________________________
> Speakup mailing list
> Speakup at braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

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