Messages in this thread | | | Date | Sun, 11 Feb 2001 22:47:41 +1100 | From | Andrew Morton <> | Subject | Re: [OT] Major Clock Drift |
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Pavel Machek wrote: > > > > Vesafb is happy to block interrupts for half a second. > > > > And has this been observed to cause clock drift? > > YEs. I've seen time running 3 times slower. Just do cat /etc/termcap > with loaded PCI bus. Yesterday I lost 20 minutes during 2 hours -- I > have been using USB (load PCI) and framebuffer.
That's not good. Very not good.
James Simmons has been looking into using something other than spin_lock_irq(console_lock) to provide the serialisation which these drivers need. Apparently it got messy. I'm interested in getting involved with this problem as well. Sounds like it may not be 2.4 stuff though.
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