Hi,
In my code, I add some protection to catch the exception from boost like "catch (boost::archive::archive_exception& ex)", strangely, it slow exception handling,  causing one of our tests to go from around 30 seconds to greater than 5 minutes. 
I did profiling and found "linear_searc_fdes" spent too much time when process exception now.
Does anyone have similar experience, why this happen, and how to fix the problem?
Thanks a lot!

Best wishes,
Andy Li