On 07/11/2012 12:55, Staffan Larsen wrote:
:
Negative values means that my changes added a regression. I think most of these
values are within the margin of error in the measurements. The one exception is
FileChannelRead. I've rerun this many times and it looks fairly consistent
around a 4% regression. Why there is only a regression when reading from a
FileChannel, I don't know.
It's possible that the additional instructions cause a threshold for
inlining to be exceeded, would require looking at the compiler
diagnostic output or generated code to see. I'll bet it is only obvious
on the read because the it's already in the file cache, if there was
actual disk access involved then its unlikely to be observable.
-Alan
