I know for a fact espekupd wakes up the processer 100 times a second according to powertop. Use of usleep perhaps? Haven't looked at the code. raises wakeup rate on my eeepc from 12.3 a second to 112.3 once espeakupd starts. Regards, Kerry. ----- Original Message ----- From: "Kirk Reiser" <kirk@xxxxxxxxxxxxxx> To: "Speakup is a screen review system for Linux." <speakup at braille.uwo.ca> Sent: Friday, May 29, 2009 11:32 PM Subject: Re: CPU issues with Speakup On Fri, 29 May 2009, Hermann wrote: > On my notebook I've only tested the latest GRML 2009-05-RC1 in live mode. > Although the CPU load is quite normal, e.g. about 6.0%sy, I observe about > 12500 wakeups per second, which seems extremely high. > Hardware: Intel processor of 2,7 Ghz and 512 MB RAM. That does seem pretty excessive. Where are you getting that wakeup rate from? I don't think our scheduling should be bringing anywhere near that figure. Kirk -- Kirk Reiser The Computer Braille Facility e-mail: kirk at braille.uwo.ca University of Western Ontario phone: (519) 661-3061 _______________________________________________ Speakup mailing list Speakup at braille.uwo.ca http://speech.braille.uwo.ca/mailman/listinfo/speakup
