Hello, a quick erratum: On Wednesday, September 19, 2007 at 17:39:04 +0200, Alain Guibert wrote:
> [When the RTC update interrupt cannot be enabled] the fallback method > (busywait for change of time) seems to be much less accurate than with > --directisa itself (busywait for UIP fall). Testing this fallback > method gave me the tick detected between 8 and 20 ms late, when normal > methods stay in a 10 µs range... That's only 2000 times worse. First, the interval is between 8 and 18 ms late. And second, this problem doesn't happen at all with recent Linux kernels, probably since 2.6.16: Then the accuracy of busywaiting for change of time becomes roughly comparable to busywaiting for UIP fall. Alain.
