Add new benchmarking utility, bench-slope

* tests/Makefile.am (TESTS): Add 'bench-slope'.
* tests/bench-slope.c: New.
--

Bench-slope is new benchmarking tool for libgcrypt for obtaining overheadless
cycles/byte speed of cipher and hash algorithms. Tool measures the time each
operation (hash/encrypt/decrypt/authentication) takes for different buffer
sizes of from ~0kB to ~4kB and calculates the slope for these data points.
The default output is then given as nanosecs/byte and mebibytes/sec. If user
provides the speed of used CPU, tool also outputs cycles/byte result (CPU-Ghz *
ns/B = c/B).

Output without CPU speed (with ARM Cortex-A8):

$ tests/bench-slope hash

Hash:
                |  nanosecs/byte   mebibytes/sec   cycles/byte
 MD5            |      7.35 ns/B     129.7 MiB/s         - c/B
 SHA1           |     12.30 ns/B     77.53 MiB/s         - c/B
 RIPEMD160      |     15.96 ns/B     59.77 MiB/s         - c/B
 TIGER192       |     55.55 ns/B     17.17 MiB/s         - c/B
 SHA256         |     24.38 ns/B     39.12 MiB/s         - c/B
 SHA384         |     34.24 ns/B     27.86 MiB/s         - c/B
 SHA512         |     34.19 ns/B     27.90 MiB/s         - c/B
 SHA224         |     24.38 ns/B     39.12 MiB/s         - c/B
 MD4            |      5.68 ns/B     168.0 MiB/s         - c/B
 CRC32          |      9.26 ns/B     103.0 MiB/s         - c/B
 CRC32RFC1510   |      9.20 ns/B     103.6 MiB/s         - c/B
 CRC24RFC2440   |     87.31 ns/B     10.92 MiB/s         - c/B
 WHIRLPOOL      |     253.3 ns/B      3.77 MiB/s         - c/B
 TIGER          |     55.55 ns/B     17.17 MiB/s         - c/B
 TIGER2         |     55.55 ns/B     17.17 MiB/s         - c/B
 GOSTR3411_94   |     212.0 ns/B      4.50 MiB/s         - c/B
 STRIBOG256     |     630.1 ns/B      1.51 MiB/s         - c/B
 STRIBOG512     |     630.1 ns/B      1.51 MiB/s         - c/B
                =

With CPU speed (with Intel i5-4570, 3.2Ghz when turbo-boost disabled):

$ tests/bench-slope --cpu-mhz 3201 cipher arcfour blowfish aes
Cipher:
 ARCFOUR        |  nanosecs/byte   mebibytes/sec   cycles/byte
     STREAM enc |      2.43 ns/B     392.1 MiB/s      7.79 c/B
     STREAM dec |      2.44 ns/B     390.2 MiB/s      7.82 c/B
                =
 BLOWFISH       |  nanosecs/byte   mebibytes/sec   cycles/byte
        ECB enc |      7.62 ns/B     125.2 MiB/s     24.38 c/B
        ECB dec |      7.63 ns/B     125.0 MiB/s     24.43 c/B
        CBC enc |      9.18 ns/B     103.9 MiB/s     29.38 c/B
        CBC dec |      2.60 ns/B     366.2 MiB/s      8.34 c/B
        CFB enc |      9.17 ns/B     104.0 MiB/s     29.35 c/B
        CFB dec |      2.66 ns/B     358.1 MiB/s      8.53 c/B
        OFB enc |      8.97 ns/B     106.3 MiB/s     28.72 c/B
        OFB dec |      8.97 ns/B     106.3 MiB/s     28.71 c/B
        CTR enc |      2.60 ns/B     366.5 MiB/s      8.33 c/B
        CTR dec |      2.60 ns/B     367.1 MiB/s      8.32 c/B
                =
 AES            |  nanosecs/byte   mebibytes/sec   cycles/byte
        ECB enc |     0.439 ns/B    2173.0 MiB/s      1.40 c/B
        ECB dec |     0.489 ns/B    1949.5 MiB/s      1.57 c/B
        CBC enc |      1.64 ns/B     580.8 MiB/s      5.26 c/B
        CBC dec |     0.219 ns/B    4357.6 MiB/s     0.701 c/B
        CFB enc |      1.53 ns/B     623.6 MiB/s      4.90 c/B
        CFB dec |     0.219 ns/B    4350.5 MiB/s     0.702 c/B
        OFB enc |      1.51 ns/B     629.9 MiB/s      4.85 c/B
        OFB dec |      1.51 ns/B     629.9 MiB/s      4.85 c/B
        CTR enc |     0.288 ns/B    3308.5 MiB/s     0.923 c/B
        CTR dec |     0.288 ns/B    3316.9 MiB/s     0.920 c/B
        CCM enc |      1.93 ns/B     493.8 MiB/s      6.18 c/B
        CCM dec |      1.93 ns/B     494.0 MiB/s      6.18 c/B
       CCM auth |      1.64 ns/B     580.1 MiB/s      5.26 c/B
                =

Note: It's highly recommented to disable turbo-boost and dynamic CPU frequency
features when making these kind of measurements to reduce variance.

Note: The results are maximum performance for each operation; the actual speed
in application depends on various matters, such as: used buffer sizes, cache
usage, etc.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

0 files changed, 0 insertions, 0 deletions