Re: [patch] recover losed timer interrupt using the TSC [Re: [patch] kstat change to see how much Li
Andi Kleen (ak@muc.de)
Sun, 14 Mar 1999 11:51:56 +0100
On Sun, Mar 14, 1999 at 10:53:23AM +0100, Ingo Molnar wrote:
>
> On Sun, 14 Mar 1999, Andrea Arcangeli wrote:
>
> > Infact people is starting to report that its machine clock is losing
> > time.
>
> i think it is more correct to define this a bug and print out a warning if
> a too long delay happens. (patch against 2.2.3 attached) It's also a much
> shorter and less intrusive patch. (it actually removes 13 lines) The
> patch:
>
> - prints a warning if a too long delay happens, eg.:
>
> bug: 000000001809cc03 cycles timer IRQ delay from c0107413
>
> (the above message was triggered artificially) The EIP is
> probably from the place where the long delay happened, but not
> necessarily. It's at least a starting point. IRQ0 has the highest
> priority, so we very likely will see some 'near' EIP.
Perhaps it is a good idea to only print the warning a few times, to avoid
flooding the logs.
-Andi
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