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    Open VPN Crypto performans AMD Geode LX800 versus AMD T40E APU

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    • A
      AndyCGN
      last edited by

      Hello everybody,

      has anyone made a performance check between AMD Geode LX800 CPU amd AMD T40E APU? While the first one runs on 500 MHz and has a build in crypto accelerator the last one runs on 1 GHz with two cores but without crypto accelerator. I checked the last T40E with:

      /usr/bin/openssl speed -evp aes-128-cbc -engine cryptodev

      engine "cryptodev" set.
      Doing aes-128-cbc for 3s on 16 size blocks: 3835168 aes-128-cbc's in 2.93s
      Doing aes-128-cbc for 3s on 64 size blocks: 1037979 aes-128-cbc's in 3.00s
      Doing aes-128-cbc for 3s on 256 size blocks: 265628 aes-128-cbc's in 3.00s
      Doing aes-128-cbc for 3s on 1024 size blocks: 66701 aes-128-cbc's in 2.99s
      Doing aes-128-cbc for 3s on 8192 size blocks: 8355 aes-128-cbc's in 3.00s
      OpenSSL 1.0.1l-freebsd 15 Jan 2015
      built on: date not available
      options:bn(64,64) rc4(8x,int) des(idx,cisc,16,int) aes(partial) idea(int) blowfish(idx)
      compiler: clang
      The 'numbers' are in 1000s of bytes per second processed.
      type            16 bytes    64 bytes    256 bytes  1024 bytes  8192 bytes
      aes-128-cbc      20945.13k    22143.55k    22666.92k    22826.72k    22814.72k

      That seems to be a worse perfomance than in this comparison on a Geode LX800 boards with different settings:
      https://doc.pfsense.org/index.php/Are_cryptographic_accelerators_supported

      Has anyone benchmarks?

      Best regards,
      Andy

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      • ?
        Guest
        last edited by

        Has anyone benchmarks?

        If you use a PC Engines APU 1D4 board you might be enabling the PowerD (high adaptive)
        option that might be realizing more throughput by using the CPU in another way.

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