Thanks for the information. I had decided not to attempt much more in the way of experimentation without getting some clarification beforehand. Chris On 23 Jan 2001, Kirk Reiser wrote: > It has become quite popular to play with these settings since Frank > discovered them a few days ago. You all may have noticed that you > need to be root to make changes to these settings. The reason for > that, and there is a reason, is that they can fuck up your system big > time if you're not careful. The common consensus is well okay > sometimes they may hang my system and I'll have to reboot; well they > can have much more violent reactions than that. If they are set to > far a field they can infact currupt your file system. Okay you've > been warned. > > Let's just get the functions of these variables straight. Delay_time > is the amount of time that speakup goes to sleep after sending > characters to the synth. Speakup sends out jiffy_delta worth of > characters before going to sleep for delay_time. Speakup does not > start talking to the synth until trigger_time worth of characters have > been sent to the buffer. Trigger_time is a one-shot in that it > doesn't get set again until the buffer has been cleared. Jiffy_delta > is the amount of time speakup holds the kernel while sending > characters to the synth. A word about these values, delay_time, > trigger_time and full_time are in miliseconds. Jiffy_delta is in ten > milisecond increments. So a trigger_time of 50 is the same as five > jiffies. Jiffies are the basic scheduling increment of Linux on > 32-bit processors they are ten miliseconds. On systems such as alphas > and sparcs they are one milisecond. The higher jiffy_delta is the > longer you hold the processor. This wouldn't be bad except that we're > talking multitasking here, so what you take someone else doesn't get > in any given time period. We can go into a rather indepth discussion > about interrupts and all that but I'd rather save that for the > reflector if anyone is interested. The bottom line is you grab to > much time and you'll have a totally fucked file system, network layer > and who knows what else. So be careful. > > The default values are not optimal because of the amount of time I > have to spend with each synth. Some drivers I never even have the > synth to test with. We have already incorporated some of the new > values that people like Frank and Bill have come up with. Over time > we will hopefully be able to tune all the different synths. I just > want you to know what you are dealing with if you are going to muck > about. I was worried because it looks to me as if you didn't know > what these values are for Chris. > > So you've all been warned. If you fuck your systems over don't even > bother mentioning it to me. meanwhile happy tuning. If you get better > values for your synths please post them to the list and on the > reflector. > > 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 >
