c# - Stopwatch for performance testing -

for private project use stopwatch performance measurement.

but on low repitition count of calls want measure, end 0 elapsedmilliseconds, makes difficult calculate average.

i thought writing own stopwatch class. calculate ticks , give vague elapsedmicroseconds based on stopwatch.elapsedticks , timespan.tickspermillisecond. not way.

i definitly need backed high performance counters of winapi, datetime , such not suffice.

are there other ideas?

if got 0 elapsedmicroseconds, means interval shorter 1 ms. may try measuring periods in ticks , use frequency:

  stopwatch watch = stopwatch.startnew();   ...   // estimated code here    ...   watch.stop();    // microseconds   int microseconds = (int)(watch.elapsedticks * 1.0e6 / stopwatch.frequency + 0.4999);   // nanoseconds (estimation)   int nanoseconds = (int)(watch.elapsedticks * 1.0e9 / stopwatch.frequency + 0.4999);