franz1981 edited a comment on issue #2844: ARTEMIS-1811 NIO Seq File should use RandomAccessFile with heap buffers URL: https://github.com/apache/activemq-artemis/pull/2844#issuecomment-533606931 Just for completeness that's what would change (ie no additional copies with heap buffers anymore): - [RandomAccessFile_write0->writeSingle](https://github.com/frohoff/jdk8u-jdk/blob/da0da73ab82ed714dc5be94acd2f0d00fbdfe2e9/src/share/native/java/io/RandomAccessFile.c#L79) - [writeSingle->IO_Write](https://github.com/frohoff/jdk8u-jdk/blob/da0da73ab82ed714dc5be94acd2f0d00fbdfe2e9/src/share/native/java/io/io_util.c#L138) - [IO_Write === handleWrite](https://github.com/frohoff/jdk8u-jdk/blob/da0da73ab82ed714dc5be94acd2f0d00fbdfe2e9/src/solaris/native/java/io/io_util_md.h#L71) - [handleWrite->write](https://github.com/frohoff/jdk8u-jdk/blob/da0da73ab82ed714dc5be94acd2f0d00fbdfe2e9/src/solaris/native/java/io/io_util_md.c#L164)
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