You should definitely open an issue about this – if your timings are right it's definitely not desirable behaviour.
https://github.com/JuliaLang/julia/issues?state=open On 31 May 2014 11:00, mike c <coolbutusel...@gmail.com> wrote: > I've narrowed down the problem. It's not a profiling problem. Julia > seems to have a step-change in speed when there are too many functions of a > similar signature. > > I've made a short example that reproduces this slowdown: > http://pastebin.com/iHAa2Cws > > Run the code once as-is, and then uncomment the intersect() function which > is currently disabled and run it again. I see a 20% drop in speed. Note: > This intersect function is NEVER actually being called. And the type it is > related to is NEVER INSTANTIATED. > > I think this probably qualifies as a bug, but it may just be the price to > pay for multiple dispatch when there are too many functions (in this case 5 > functions) to choose from. >
