Patrick J. LoPresti wrote: On Fri, Aug 13, 2010 at 11:45 AM, john stultz <johnstul@xxxxxxxxxx> wrote: > On those TSC broken systems that use the hpet or acpi_pm, a > getnstimeofday call can take 0.5-1.3us, so the penalty can be quite > severe. So you are saying my proposal is a bad idea forever? (But then why even bother having nanosecond resolution on ext4?) How about using getnstimeofday() only if the kernel clocksource is tsc? Presumably anyone running into this problem would have modern high performance hardware with working tsc. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
