Question about timer

Question about timer

Post by liandongzha » Fri, 21 Jun 2002 00:00:58

when and where does linux set the clock interrupt ferquency to 100HZ?
I know linux time  isr fires every 10ms but i can not find where the
time hardware is set to this frequency and now i hope to change the

1. Question about timer interrupt and xtime

Hi everybody,

In kernel 2.2.18, update_wall_time() called by timer_bh use
lost_ticks to adjust xtime, my question is: while kernel executes
cli(), timer interrupts are ignored, so the real time passed >=
lost_ticks. Therefore lost_ticks are not accurate anymore, how
should kernel use lost_ticks to adjust rtc?


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