[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] A clocksource question
On 11/03/2010 02:06, Jeremy Fitzhardinge wrote: > On 03/10/2010 04:52 PM, Joanna Rutkowska wrote: >> BTW, how does the clocksource=jiffies work on a pvops kernel in Dom0? >> > > Not very well. clocksource=jiffies just sets up timer interrupts at > approx 100ms intervals and assumes that's 100ms. You get very low res > timers and timekeeping. > So, how to explain that there is no wallclock drift *at all*, even in a long run -- uptime of a few days, in Dom0, when it uses the jiffies source? Anyway, I assume that the "xen" clock source is much more fine grained (1ms?) and so, maybe my kbd hiccups are caused by some code executed by the timer interrupt too frequently (maybe too much code executes per each timer interrupt, because of some other bug)? Just a though... j. Attachment:
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