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  1. JDK
  2. JDK-8273297

AES/GCM non-AVX512+VAES CPUs suffer after 8267125

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Details

    • Bug
    • Resolution: Fixed
    • P2
    • 18
    • 18
    • security-libs
    • b17
    • generic
    • generic

    Description

      Performance dropped up to 10% for 1k data after 8267125 for CPUs that do not support the new intrinsic. Tests run were crypto.full.AESGCMBench and crypto.full.AESGCMByteBuffer from the jmh micro benchmarks.

      The problem is each instance of GHASH allocates 96 extra longs for the AVX512+VAES intrinsic regardless if the intrinsic is used. This extra table space should be allocated differently so that non-supporting CPUs do not suffer this penalty. This issue also affects non-Intel CPUs too.

      Attachments

        Issue Links

          relates to

          Enhancement - null JDK-8267125 AES Galois CounterMode (GCM) interleaved implementation using AVX512 + VAES instructions

          • P2 - Crashes, loss of data, severe memory leak.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8274323 compiler/codegen/aes/TestAESMain.java failed with "Error: invalid offset: -1434443640" after 8273297

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8274730 AArch64: AES/GCM acceleration is broken by the fix for JDK-8273297

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-8275052 AArch64: Severe AES/GCM slowdown on MacOS for short blocks

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-8283022 com/sun/crypto/provider/Cipher/AEAD/GCMBufferTest.java failing with -Xcomp after 8273297

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Enhancement - null JDK-8267125 AES Galois CounterMode (GCM) interleaved implementation using AVX512 + VAES instructions

          • P2 - Crashes, loss of data, severe memory leak.
          • Resolved
          links to

          Commit Commit openjdk/jdk/13e9ea9e

          Review Review openjdk/jdk/5402

          Activity

            People

              svkamath Smita Kamath
              ascarpino Anthony Scarpino
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              Dates

                Created:
                Updated:
                Resolved: