CodeCacheSegmentSize is currently platform-specific and set independent from other, related parameters, like CodeEntryAlignment.

 - find an optimal setting for CodeCacheSegmentSize to minimize space waste due to alignment while, at the same time, keeping the performance impact and the size of internal data structures in check.

 - if possible, derive CodeCacheSegmentSize from CodeEntryAlignment.

 - examine non-linear growth of alignment waste with CodeCacheSegmentSize. See statistics in attached file CodeCacheWaste.txt