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  1. JDK
  2. JDK-8058564

Tiered compilation performance drop in PIT

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    Backports

      Description

        In latest PIT of hs25.40 several jtreg tests failed due to exceeded timeout.
        Performed analysis showed that execution time of following tests increased significantly comparing to jdk8u40-b04:

        compiler/5091921/Test6905845.java
        compiler/5091921/Test6992759.java
        compiler/5091921/Test7020614.java
        compiler/7088419/CRCTest.java
        java/util/regex/RegExTest.java

        For example, java/util/regex/RegExTest.java take ~ 2minutes to finish with jdk8u40-b04 and ~ 15 minutes with PIT build.

        Issue could be reproduced with Xcomp and +TieredCompilation. It seems like only compilation on tier 3 is affected: with -TieredCompilation and -XX:TieredStopAtLevel=2 execution time is the same as with 8u40-b04.



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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-8063317 Tiered compilation performance drop in PIT

            • P1 - Blocks development and/or testing work, production could not run.
            • 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-8071053 Tiered compilation performance drop in PIT

            • P1 - Blocks development and/or testing work, production could not run.
            • 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-8083031 Tiered compilation performance drop in PIT

            • P1 - Blocks development and/or testing work, production could not run.
            • 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-8058646 Tiered compilation performance drop in PIT

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed
            blocks

            Bug - A problem which impairs or prevents the functions of the product. JDK-7115356 assert(!m->was_never_executed()) failed

            • P3 - Major loss of function.
            • Closed
            duplicates

            Enhancement - null JDK-8043061 Tiered: MethodCounters should be present for methods enqueued for compilation

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-7115356 assert(!m->was_never_executed()) failed

            • P3 - Major loss of function.
            • Closed
            relates to

            Enhancement - null JDK-8058184 Move _highest_comp_level and _highest_osr_comp_level from MethodData to MethodCounters

            • P3 - Major loss of function.
            • Resolved

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                iveresov Igor Veresov
                fzhinkin Filipp Zhinkin
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                  Updated:
                  Resolved: