Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-4976317

Performance regression in trigonometric functions since 1.4.2

    XMLWordPrintable

    Details

    • Subcomponent:
    • Resolved In Build:
      b36
    • CPU:
      sparc
    • OS:
      solaris_9

      Description

      Run attached test on Solaris Sparc (I run on SB2000, USIII 2x1.2Ghz, 2G RAM),
      with -server, and notice a significant regression in performance of
      some trigonometric functions since 1.4.2:
      Total benchmark time:
        1.5b33 119351 ms
        1.4.2_04 85418 ms
        1.3.1_11 99391 ms

      In my case trigonometric calculations were almost 2x slower
      in 1.5 than it was in 1.4.2:
        131: 45976 ms
        142: 40344 ms
        150: 74498 ms

      ###@###.### 2004-01-09

      The performance regression is largely in sin and cos. and appears to orginate with our previous work on 4738699. Reassigning to the RE for that bug.


      ###@###.### 2004-01-09

        Attachments

          Activity

            People

            Assignee:
            azeemj Azeem Jiva
            Reporter:
            tdv Dmitri Trembovetski (Inactive)
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:
              Imported:
              Indexed: