I've gotten similar results. It's worse than I'd thought it would be. The
addition of the gc substantially slows things down. Granted, the gc could be
tuned, but this is a very inauspicious start.
Of course, the test suite is all small programs. How a large one behaved would
be interesting.
Fortunately, the gc can be swapped in and out with a commenting/uncommenting 2
lines in win32.mak.
On 9/24/2011 2:10 PM, Brad Roberts wrote:
Looks like the execution time for dmd and phobos have increased fairly
substantially since the gc was checked in.
http://d.puremagic.com/test-results/platform-history.ghtml?os=Win_32
http://d.puremagic.com/test-results/platform-history.ghtml?os=Linux_32
The linux link is just for comparison to show that no increase has
occurred there. On windows the phobos test time has increased from
approx 8 minutes to approx 10 minutes, or 25%. The dmd test has
increased from approx 27 minutes (much more variation and I didn't
compute an average or std dev) to approx 39 minutes (with only one
completed data point so far, so, well, grain of salt), almost doubling.
A few more runs will help show the averages better, but still worth
being concerned about. That's a significant performance hit to the
compiler.
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