Beware of your long tail garbage

IBM’s PLDE seminar 2010 (IBM Programming Languages and Development Environments Seminar 2010)

An interesting session by Kathy Barabash on GC running with parallel cores raises an important note I haven't thought about: long referenced tails are harder for the GC to parallelize, as the GC cannot break long list efficiently into two threads. Thus if you create references with long distance from the root (local or static reference), your GC time would be longer compared to same number of references in a more spread structure.
XALAN seem to sin with the above.

Gilad Bracha opened with a overview of mistakes done by Java 1.0 which are living in Java till these days.

Gili Nachum writes on the above two in his JavaTuning blog:
http://www.javatuning.com/ibms-plde-seminar-2010-review/