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  1. JDK
  2. JDK-7079329

Adjust allocation prefetching for T4

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    • Subcomponent:
    • Resolved In Build:
      b02
    • CPU:
      generic
    • OS:
      generic
    • Verification:
      Not verified

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        Description

        L2 cache line size is 32 bytes on T4 instead of 64 bytes on T series before. As result BIS instruction used for allocation prefetching initialize only 32 bytes. Jbb2005 runs show that prefetching 64 bytes is still better on T4 so 2 BIS instructions should be issued.

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                • Assignee:
                  kvn Vladimir Kozlov
                  Reporter:
                  kvn Vladimir Kozlov
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