On Sun, Aug 30, 2009 at 10:40 AM, Jason Baker <[email protected]> wrote:
>
> I've written a test that does this:
>
> public void ReadFile(TextReader infile)
> {
> using (var text_reader = new PushbackTextReader(infile)) {
> LispReader.read(text_reader, false, null, true);
> }
> }
>
> ...in a loop. I'm running this operation a specified number of times
> and then getting an average runtime. The thing is, if I run this more
> times, the average time goes down. Is something getting cached and/or
> memoized somewhere, or is this just a bad way to test performance?
>
> (And FYI, the TextReader that's getting passed in is a StringReader so
> I can eliminate I/O time from the results)
Given that last, I/O buffering and OS disk caching seem doubtful. JIT
perhaps.
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