Messages in this thread | | | Date | Tue, 17 Dec 2002 16:39:54 -0500 | From | Benjamin LaHaise <> | Subject | Re: Intel P6 vs P7 system call performance |
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On Tue, Dec 17, 2002 at 11:11:19AM -0800, H. Peter Anvin wrote: > > against 0xfffffxxx and "rollback" (or complete) any incomplete > > gettimeofday call prior to saving a task's state. but i bet that test is > > undesirable on all interrupt paths. > > > > Exactly. This is a real problem.
No, just take the number of context switches before and after the attempt to read the time of day.
-ben -- "Do you seek knowledge in time travel?" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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