On Fri, 29 Apr 2011 17:02:55 -0400, Timon Gehr <[email protected]> wrote:
Steven Schveighoffer wrote:
2. the GC is conservative, and you are allocating swaths of 1K objects.
It's quite possible that you are running into false pointer issues.
This
might be helped with a more precise GC (which there is a patch for in
bugzilla). David Simcha has also checked into github improvements for
allocation of large objects. This may also help with your benchmark.
The data=void can be removed, but it actually slows down the benchmark a
little
bit on my machine.
Yes, that's because you are using char data, whose default is 0xff :)
data = void doesn't actually make that data random, because it still has
to initialize the other parts of the class data. The run time doesn't
have some way to "skip" certain parts of the initializer data. So it
likely just sets it to 0.
If you changed your data type to ubyte[], it would become fast again, even
without the =void, because it's memsetting to 0 vs copying an initializer
with some bytes set to 0xff.
-Steve
