07.01.2012 5:12, Andrej Mitrovic пишет:
Oooh I've just realized something, the *compilation* calls are what's
destroying the performance. I was using "dmd test.d&& test.exe"
instead of just "test.exe" and this would generate a new exe which
screwed up the results.
So regex has nothing to do with it. Still, some linkers perform better:
$ dmd -c test.obj
$ link test.obj
Average is ~700usecs. But with ulink:
$ ulink test.obj
Average is ~380 usecs. Interesting!
No regex call: ~350 usecs, size: ~800 KiB
With regex call: ~540 usecs (i.e. +54%), size: ~1000 KiB (i.e. +25%)
Deviation is about 10 usecs when repeatedly launching from a console.
Compiler: dmd 2.057 -O -noboundscheck -release, CPU: E6850, OS: Windows
XP SP3 32bit.
So what is the explanation of 54% speed decrease?
