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Speed up loading of heap dump #631

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thurka opened this issue Mar 10, 2025 · 1 comment
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Speed up loading of heap dump #631

thurka opened this issue Mar 10, 2025 · 1 comment
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thurka commented Mar 10, 2025

When JDK integrated Remove file seeking requirement for writing a heap dump, it introduced a change in the heap dump writing process. As an implementation detail, the heap dumping code now generates a significant number of short HEAP_DUMP_SEGMENT-s. This change has resulted in a slowdown when opening heap dumps, as the heapDumpSegIterator() function has become quite slow.
@thurka thurka added the bug label Mar 10, 2025
@thurka thurka self-assigned this Mar 10, 2025
thurka added a commit that referenced this issue Mar 15, 2025
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GH-631 shortcut added to handle heapdump with just one segment (this …
adf305e 
…is 99.99% cases)
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thurka commented Mar 15, 2025

Fixed in master.

@thurka thurka closed this as completed Mar 15, 2025
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