On Thursday 15 April 2010 10:55:47 Cathey, Jim wrote: > >> 2. Linux kernel will attempt to update RTC at 500ms mark and > > > > not at a second mark. Do they known something better? > >Perhaps they thought this minimizes average error in setting > >RTC time. > > Perhaps most RTC-reading ends up on a 1-second mark, > and thus moving the writing avoids conflicts that > at best result in a delay of the write? Just guessing.
Actually it sounds like the battery backed up clock hardware records info a half-second off from the volatile clock, so you _have_ to set it at the half second mark (either a half second before or a half second after the time yo're setting it, dunno which) if you want it to play back an accurate time. > -- Jim Rob -- Latency is more important than throughput. It's that simple. - Linus Torvalds _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox
