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  1. JDK
  2. JDK-8147468

(bf) Allow users to bound the size of buffers cached in the per-thread buffer caches

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    • b104
    • generic
    • generic

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        Some NIO channel operations use temporary DirectByteBuffers which are cached in thread-local caches to avoid having to allocate / free a buffer at every operation.

        Unfortunately, there is no bound imposed on the size of buffers added to the thread-local caches. So, infrequent channel operations that require a very large buffer can create a native memory leak.

        We should introduce a property, jdk.nio.MaxCachedBufferSize that if set sets a limit on the size of the buffers that can be added to the thread-local caches. Operations that require a buffer that is larger than this limit will allocate then free an one-off buffer.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8153975 (bf) Allow users to bound the size of buffers cached in the per-thread buffer caches

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8156401 (bf) Allow users to bound the size of buffers cached in the per-thread buffer caches

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8162236 (bf) Allow users to bound the size of buffers cached in the per-thread buffer caches

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            csr of

            CSR - null CCC-8147468 (bf) Allow users to bound the size of buffers cached in the per-thread buffer caches

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8148540 sun/nio/ch/TestMaxCachedBufferSize.java fails on 32bit system

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Open

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                tonyp Tony Printezis
                tonyp Tony Printezis
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                  Updated:
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