IBM User Guide for Java V7 on Windows > Troubleshooting and support > Using diagnostic tools > Garbage Collector diagnostic data > -Xtgc tracing

-Xtgc:terse

This trace dumps the contents of the entire heap before and after a garbage collection.

This is an extremely large trace. For each object or free chunk in the heap, a line of trace output is produced. Each line contains the base address, "a" if it is an allocated object and "f" if it is a free chunk, the size of the chunk in bytes, and if it is an object, its class name. A sample is shown as follows:

*DH(1)* 230AD778 a x0000001C java/lang/String
*DH(1)* 230AD794 a x00000048 char[]
*DH(1)* 230AD7DC a x00000018 java/lang/StringBuffer
*DH(1)* 230AD7F4 a x00000030 char[]
*DH(1)* 230AD824 a x00000054 char[]
*DH(1)* 230AD878 a x0000001C java/lang/String
*DH(1)* 230AD894 a x00000018 java/util/HashMapEntry
*DH(1)* 230AD8AC a x0000004C char[]
*DH(1)* 230AD8F8 a x0000001C java/lang/String
*DH(1)* 230AD914 a x0000004C char[]
*DH(1)* 230AD960 a x00000018 char[]
*DH(1)* 230AD978 a x0000001C java/lang/String
*DH(1)* 230AD994 a x00000018 char[]
*DH(1)* 230AD9AC a x00000018 java/lang/StringBuffer
*DH(1)* 230AD9C4 a x00000030 char[]
*DH(1)* 230AD9F4 a x00000054 char[]
*DH(1)* 230ADA48 a x0000001C java/lang/String
*DH(1)* 230ADA64 a x00000018 java/util/HashMapEntry
*DH(1)* 230ADA7C a x00000050 char[]
*DH(1)* 230ADACC a x0000001C java/lang/String
*DH(1)* 230ADAE8 a x00000050 char[]
*DH(1)* 230ADB38 a x00000018 char[]
*DH(1)* 230ADB50 a x0000001C java/lang/String
*DH(1)* 230ADB6C a x00000018 char[]
*DH(1)* 230ADB84 a x00000018 java/lang/StringBuffer
*DH(1)* 230ADB9C a x00000030 char[]
*DH(1)* 230ADBCC a x00000054 char[]
*DH(1)* 230ADC20 a x0000001C java/lang/String
*DH(1)* 230ADC3C a x00000018 java/util/HashMapEntry
*DH(1)* 230ADC54 a x0000004C char[]

Parent: -Xtgc tracing

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