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Opening heap dump on M1 Mac is slow #555

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thurka opened this issue Feb 9, 2024 · 3 comments
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Opening heap dump on M1 Mac is slow #555

thurka opened this issue Feb 9, 2024 · 3 comments
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thurka commented Feb 9, 2024

This problem is specially visible in a larger heap dumps >4G, where opening heap dump is significantly slower for second half (opening progress is bigger than 50%). On my testing with M1, opening of heap dump takes about 7 minutes. Similar Intel machine can open the same heap dump under 30 seconds.
@thurka thurka added the bug label Feb 9, 2024
@thurka thurka self-assigned this Feb 9, 2024
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thurka commented Feb 9, 2024

A lot of data is written (>40M/sec) by VisualVM while opening the file (can be seen in Activity monitor).

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thurka commented Feb 9, 2024

This issue looks similar to this issue on Linux.

thurka added a commit that referenced this issue Feb 11, 2024
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GH-555 use FileChannel.MapMode.PRIVATE on macOS aarch64
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thurka commented Feb 11, 2024

Fixed in master.

@thurka thurka closed this as completed Feb 11, 2024
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