Re: sched_clock() uses are broken

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Andi Kleen wrote:
On Tuesday 02 May 2006 18:54, Christopher Friesen wrote:

Andi Kleen wrote:


Agreed it's a problem, but probably a small one. At worst you'll get
a small scheduling hickup every half year, which should be hardly that big an issue.

Presumably this would be bad for soft-realtime embedded things. Set-top boxes, etc.


SCHED_RR/FIFO are not affected. AFAIK it's only used by the interactivity
detector in the normal scheduler. Worst case that happens is that a process is not detected to be interactive when it should once, which
gives it only a small penalty. On the next time slice everything will be ok again.

Other problem is that some people didn't RTFM and have started trying to
use it for precise accounting :(

--
SUSE Labs, Novell Inc.
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