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Javolution - Java(TM) Solution for Real-Time and Embedded Systems
Version 2.0.2 November 28 2004 (http://javolution.org)

Benchmark...

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// Package: javolution.io //
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// Package: javolution.lang //
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-- String/StringBuffer/StringBuilder versus Text/TextBuilder --
"Concatenates this line one hundred times (resulting in a text of about 8000 characters)"
String "+" operator: 17.32ms
StringBuffer "append": 249.0µs
StringBuilder "append": 1.958ms
Text "plus" (heap): 133.0µs
Text "plus" (stack): 72.0µs
TextBuilder "append": 84.0µs

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// Package: javolution.realtime //
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-- Heap versus Stack Allocation (Pool-Context) --
Object heap creation: 156.1ns
Object stack creation: 110.8ns
char[128] heap creation: 7.83µs
char[128] stack creation: 191.0ns
char[256] heap creation: 34.083µs
char[256] stack creation: 172.0ns

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// Package: javolution.util //
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-- HashMap/LinkedMap versus FastMap --
HashMap
    Creates/populates map of 200 entries: 100.76µs
    Access (get): 124.7ns
    Iterates through all map entries: 32.14µs
LinkedHashMap
    Creates/populates map of 200 entries: 121.6µs
    Access (get): 161.8ns
    Iterates through all map entries: 16.8µs
FastMap
    Creates/populates map of 200 entries: 57.24µs
    Access (get): 137.8ns
    Iterates through all map entries: 19.42µs
    Statistics: SIZE: 200, CAPACITY: 256, AVG COLLISIONS: 31%, MAX SLOT OCCUPANCY: 5

-- HashSet/LinkedHashSet/TreeSet versus FastSet --
HashSet
    Creates/populates set of 200 elements: 108.02µs
    Access (contains): 152.0ns
    Iterates through all set elements: 33.36µs
LinkedHashSet
    Creates/populates set of 200 elements: 125.82µs
    Access (contains): 171.1ns
    Iterates through all set elements: 17.46µs
FastSet
    Creates/populates set of 200 elements: 63.16µs
    Access (contains): 187.1ns
    Iterates through all set elements: 19.5µs

-- ArrayList/LinkedList versus FastList --
ArrayList
    Creates new list and appends 200 elements: 31.62µs
    Iterates through all list elements: 27.64µs
LinkedList
    Creates new list and appends 200 elements: 45.88µs
    Iterates through all list elements: 14.68µs
FastList
    Creates new list and appends 200 elements: 40.64µs
    Iterates through all list elements: 20.42µs

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// Package: javolution.xml //
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-- Default Java(TM) Serialization (stream-based) --
Time: 1893.0ms

-- XML Serialization using IO (Stream) --
Time: 749.0ms

-- XML Serialization using NIO (ByteBuffer) --
Time: 492.0ms

More performance analysis in future versions...