Re: Minimum RTEMS system clock frequency

2015-03-20 Thread Alexander Krutwig
On 20/03/15 01:54, Chris Johns wrote: On 20/03/2015 11:27 am, Joel Sherrill wrote: 20 Hz is a 50 millisecond period. Ah, thanks. I read it on a phone as 20KHz and was confused and did not reread. I have assumed that he meant this was the largest clock tick time quantum which is reasona

Re: Minimum RTEMS system clock frequency

2015-03-19 Thread Chris Johns
On 20/03/2015 11:27 am, Joel Sherrill wrote: 20 Hz is a 50 millisecond period. Ah, thanks. I read it on a phone as 20KHz and was confused and did not reread. I have assumed that he meant this was the largest clock tick time quantum which is reasonable to configure. 50msec is fine with

Re: Minimum RTEMS system clock frequency

2015-03-19 Thread Joel Sherrill
ps://devel.rtems.org/ticket/2271). > >This is really cool stuff and I think the graphs so far are excellent. > >> In the progress, I found out that the minimum RTEMS system clock >> frequency should at least be 20Hz to guarantee a correct >functionality. >> Are there users that

Re: Minimum RTEMS system clock frequency

2015-03-19 Thread Chris Johns
llent. In the progress, I found out that the minimum RTEMS system clock frequency should at least be 20Hz to guarantee a correct functionality. Are there users that are troubled by this minimum system clock frequency? I am a little confused with the wording here. To me a 'system clock fre

Re: Minimum RTEMS system clock frequency

2015-03-19 Thread Joel Sherrill
s, I found out that the minimum RTEMS system clock >frequency should at least be 20Hz to guarantee a correct functionality. >Are there users that are troubled by this minimum system clock >frequency? I have been recommending 1 ms as a good starting spot for a clock tick quantum for years.

Minimum RTEMS system clock frequency

2015-03-19 Thread Alexander Krutwig
Hello, currently I am working on the implementation of FreeBSD timecounters into RTEMS as illustrated in Ticket #2271 of the developer's board (https://devel.rtems.org/ticket/2271). In the progress, I found out that the minimum RTEMS system clock frequency should at least be 20Hz to guar