TR on allocation behavior in Java

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From: Godmar Back (gback@cs.utah.edu)
Date: Mon Feb 08 1999 - 23:23:59 EST


An interesting TR by Dieckmann & Hoelzle:

http://www.cs.ucsb.edu/TRs/TRCS98-33.html

    Sylvia Dieckmann and Urs Hölzle
    -------------------------------------------------------------------------
     Abstract: We present an analysis of the memory usage for six of the Java
    programs in the SPECjvm98 benchmark suite. Most of the programs are
    real-world applications with high demands on the memory system. For each
    program, we measured as much low level data as possible, including age and
    size distribution, type distribution, thread-local objects, and the
    overhead of object alignment. Among other things, we found that
    non-pointer data usually represents more than 50% of the allocated space
    for instance objects, that Java objects are fairly small, and that a
    large fraction of objects is never accessible outside the thread that
    allocated it.


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