Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8265175

(fs) Files.copy(Path,Path,CopyOption...) should use sendfile on Linux

    XMLWordPrintable

Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 17
    • None
    • core-libs
    • b19
    • linux

    Description

      On Unix the copy is implemented in sun.nio.fs.UnixCopyFile.copy() which calls a native method transfer(int,int,long) to perform the actual data copying. The copy is effected via a user-space buffer in a loop of read()-write() invocations. Instead of going via user-space buffers, the copy should be able to be done more efficiently using zero-copy as implemented by the Linux system call sendfile().

      Attachments

        Issue Links

          relates to

          Sub-task - The sub-task of the issue JDK-8264744 (fs) Use file cloning in Linux version of Files::copy method

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

          Enhancement - null JDK-8266589 (fs) Improve performance of Files.copy() on macOS using copyfile(3)

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8269074 (fs) Files.copy fails to copy from /proc on some linux kernel versions

          • P3 - Major loss of function.
          • Resolved
          links to

          Commit Commit openjdk/jdk/1c3fd46d

          Review Review openjdk/jdk/3476

          Activity

            People

              bpb Brian Burkhalter
              bpb Brian Burkhalter
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: