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  1. JDK
  2. JDK-4181755

JIT is slow for cryptographic functions and other huge blocks of inlined code

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      Name: tb29552 Date: 10/15/98


      Hi folks,

      On the 1.1.6 release there were problems with the JIT. It went into
      an infinite loop on some pieces of code (this was first noted by
      cryptographic software providers as it seems the low-level bit
      twiddling involved in crypto produced this problem).

      SUN released an update to the JIT which solved the problem by not
      operating in JIT mode on these pieces of code. This was apparent
      from the performance on such code which was down to 25% of its former
      speed.

      It appears the JIT has not been altered since this update and these
      perfomance issues remain. So our code runs (much) slower with jdk1.1.7
      (pre Symantec days) than it did with jdk1.1.7.

      Are there any plans to deal with this problem?

      Related bug report:

       Bug Id: 4138234
       Synopsis: JIT VM Hangs when generating random bytes

      (Review ID: 40101)
      ======================================================================

            Unassigned Unassigned
            tbell Tim Bell
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