IBM User Guide for Java V7 on Windows > Troubleshooting and support > Using diagnostic tools > Garbage Collector diagnostic data > Verbose garbage collection logging

Allocation failure

Garbage collection cycles caused by an allocation failure are shown by <af-start> and <af-end> tags in the verbose output.

The <af-start> and <af-end> tags enclose the <cycle-start> and <cycle-end> tags. The <af-start> tag contains a totalBytesRequested attribute. This attribute specifies the number of bytes that were required by the allocations that caused this allocation failure. The intervalms attribute on the af-start tag is the time, in milliseconds, since the previous <af-start> tag. When the garbage collection cycle caused by the allocation failure is complete, an allocation-satisfied tag is generated. This tag indicates that the allocation that caused the failure is now complete.

<af-start id="3" totalBytesRequested="12936" timestamp="2010-11-23T00:41:32.515"
intervalms="225.036" />

<allocation-satisfied id="11" thread="00124F00" bytesRequested="12936" />
<af-end id="12" timestamp="2010-11-23T00:41:32.515"/>

Parent: Verbose garbage collection logging

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