It's hard to be certain without knowing anything about the code you are profiling, but there have been some issues with slow backtraces on windows that recent commits has fixed. Unfortunately most of those was backported after the latest release-0.3 version was tagged, but if you compile yourself, you can update to get some improvement.
- [julia-users] @profile -> don't wait for me computatio... Petr Krysl
- [julia-users] @profile -> don't wait for me compu... Ivar Nesje
- [julia-users] Re: @profile -> don't wait for ... Valentin Churavy
