[ntp:questions] Can a clock drift be too big for ntpd?

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Sat Oct 20 03:17:55 UTC 2007

>It is de-rigueur to mention Linux and missing interrupts in the same
>sentence. Even in the absence of evidence.

RedHat 7.2 shipped with IDE disks running with DMA disabled.
(I assumed that was a workaround for buggy hardware or a buggy driver.)

That was ok with light loads which covered most usage patterns.
I had a couple of hacks for measuring disk throughput that would
generate lost interrupts every time.  Lots of them.

Turning on DMA solved the problem.

These are my opinions, not necessarily my employer's.  I hate spam.

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