JDK-8193832 : Performance of InputStream.readAllBytes() could be improved
- Type: Bug
- Component: core-libs
- Sub-Component: java.io
- Affected Version: 9,10
- Priority: P4
- Status: Closed
- Resolution: Fixed
- Submitted: 2017-12-19
- Updated: 2025-06-20
- Resolved: 2017-12-22
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| JDK 11 | Other |
|---|---|
11 b01Fixed  |
openjdk7uFixed |
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Description
InputStream.readAllBytes() currently uses intermediate buffers of geometrically increasing size with a copy into each intermediate buffer at each stage. It is possible to improve the memory usage and performance using an alternate algorithm of storing a list of fixed size buffers and gathering those into a single buffer at the end.
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