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Author SHA1 Message Date
David Sterba 34ef695a81 btrfs-progs: add BLAKE2 to hash-speedtest 
Sample results, Intel(R) Xeon(R) CPU E5-1620 v3 @ 3.50GHz

Block size: 4096
Iterations: 1000000

    NULL-NOP: cycles:    314296257, c/i      314
 NULL-MEMCPY: cycles:    582807266, c/i      582
      CRC32C: cycles:   1738544130, c/i     1738
      XXHASH: cycles:   1449519934, c/i     1449
      SHA256: cycles: 110648340548, c/i   110648
     BLAKE2b: cycles:  29743769472, c/i    29743

Note this is unoptimized reference implementation.

Signed-off-by: David Sterba <dsterba@suse.com>
 2019-11-18 19:21:06 +01:00
David Sterba f5e952b13d btrfs-progs: add SHA256 to hash-speedtest 
Sample results, Intel(R) Xeon(R) CPU E5-1620 v3 @ 3.50GHz

Block size: 4096
Iterations: 1000000

    NULL-NOP: cycles:    314296257, c/i      314
 NULL-MEMCPY: cycles:    582807266, c/i      582
      CRC32C: cycles:   1738544130, c/i     1738
      XXHASH: cycles:   1449519934, c/i     1449
      SHA256: cycles: 110648340548, c/i   110648

Note this is unoptimized reference implementation.

Signed-off-by: David Sterba <dsterba@suse.com>
 2019-11-18 19:21:06 +01:00
David Sterba 785073f658 btrfs-progs: crypto: add hash speedtest utility 
A simple tool to microbenchmark performance of the hashes. Uses rdtsc
for timing, so works only on x86_64.

 $ make hash-speedtest
 $ ./hash-speedtest [iterations]

   Block size: 4096
   Iterations: 100000

       NULL-NOP: cycles:     56061823, c/i      560
    NULL-MEMCPY: cycles:     61296469, c/i      612
	 CRC32C: cycles:    179961796, c/i     1799
	 XXHASH: cycles:    138434590, c/i     1384

Signed-off-by: David Sterba <dsterba@suse.com>
 2019-11-18 19:20:03 +01:00