Re: [lcd4linux] T6963 High CPU Usage....

[Michael R. <re...@eu...>]

Hi Juergen,

>>> udelay.c: using gettimeofday() delay loop
>> not that good. But you are using an old processor without TSC...
>>
> Intel Celeron, 467MHz

Celerons do not have a TSC?
What linux kernel are you using? Could you check the "flags" line from 
/proc/cpuinfo ?

> It's a long way..... I don't know what's wrong with /dev/ppdev!
It's not /dev/ppdev, but /dev/parport/0 (devfs) or /dev/parport0, major 
99, kernel module ppdev.o

> The wiring is from LCDproc and i edit the LCD4linux.conf. The Display 
> runns with lcdproc too, but with much more CPU-Load an time to display 
> somethimg....
So lcdproc has the same problem than lcd4linux?

>> Here we are: This means that the "busy check" does not work for you. 
>> The T6963 requires this busy checking, which means it has to read 
>> values back from the parallel port. The message "hang in status.." is 
>> emitted when the busy-check does not success after a certain amount of 
>> time
>>
> I think 150ns for Statuscheck. That's the Problem?
No, not the 150 ns, but statuscheck does never return, or the status can 
not be read correctly.

>> Can you test lcd4linux on this machine?

Did you?

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
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