Response Time resolution to big...

My web services are taking only a microsecond or two so and when I look at Wildfly access logs I see 0 msec (but I know it is less than that and need to know for performance evaluation of undertow) and highest resolution is only 1msec via %D. Please add nanosecond resolution so people using fast web services can see what undertow is capable of.
I know Tomcat can measure down to microseconds under linux but I am using Windows till I port to linux.

Thanks,
-Tony