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  1. JDK
  2. JDK-8229022

BufferedReader performance can be improved by using StringBuilder

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    Backports

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        ADDITIONAL SYSTEM INFORMATION :
        Java 11

        A DESCRIPTION OF THE PROBLEM :
        See https://lemire.me/blog/2019/07/26/how-fast-can-a-bufferedreader-read-lines-in-java/

        BufferedReader uses StringBuffer. Swapping that to use StringBuilder seems to give a ~13% performance boost.


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            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-8231965 BufferedReader performance can be improved by using StringBuilder

            • 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-8234490 BufferedReader performance can be improved by using StringBuilder

            • 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-8234514 BufferedReader performance can be improved by using StringBuilder

            • 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-8239673 BufferedReader performance can be improved by using StringBuilder

            • 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-8240092 BufferedReader performance can be improved by using StringBuilder

            • 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-8245647 BufferedReader performance can be improved by using StringBuilder

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
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            Web Link core-libs-dev review

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                bpb Brian Burkhalter
                webbuggrp Webbug Group
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                  Updated:
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