条件

FreeBSD 10.1-RELEASE-p9 #0: Tue Apr  7 01:07:33 UTC 2015
CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz (1816.21-MHz 686-class CPU)
real memory  = 1073741824 (1024 MB)
avail memory = 1025581056 (978 MB)
iozone21-2.01で測定
$ iozone 512

測定結果

• geliなし

32,491,478 bytes/second for writing the file
70,917,932 bytes/second for reading the file

• EncryptionAlgorithm: NULL

23421771 bytes/second for writing the file
70481514 bytes/second for reading the file

• EncryptionAlgorithm: AES-CBC

14376459 bytes/second for writing the file
70844821 bytes/second for reading the file

• EncryptionAlgorithm: CAMELLIA-CBC

13346179 bytes/second for writing the file
70771860 bytes/second for reading the file

• EncryptionAlgorithm: AES-XTS

12773136 bytes/second for writing the file
71138174 bytes/second for reading the file

• EncryptionAlgorithm: 3DES-CBC

 6004847 bytes/second for writing the file
70409299 bytes/second for reading the file

• EncryptionAlgorithm: Blowfish-CBC

 4650120 bytes/second for writing the file
70265313 bytes/second for reading the file

古いCPUだとこんな感じでした、Blowfishは軽いと思っていたのに

• 参考
  • GELI Benchmarks (AES/BLOWFISH/CAMELLIA/3DES)
  • AES-NIという加速装置のお話