Am Donnerstag, 26. Mai 2016, 13:25:02 schrieb Jeffrey Walton: Hi Jeffrey, > > What I am wondering is that when encrypting 256 16 byte blocks, I get a > > speed of about 170 MB/s with the AES-NI driver. When using the > > aes-generic or aes- asm, I get up to 180 MB/s with all else being equal. > > Note, that figure includes a copy_to_user of the generated data. > > > > ... > > Something sounds amiss. > > AES-NI should be on the order of magnitude faster than a generic > implementation. Can you verify AES-NI is actually using AES-NI, and > aes-generic is a software implementation? I am pretty sure I am using the right implementations as I checked the refcount in /proc/crypto. > > Here are some OpenSSL numbers. EVP uses AES-NI when available. > Omitting -evp means its software only (no hardware acceleration, like > AES-NI). I understand that AES-NI should be faster. That is what I am wondering about. However, the key difference to a standard speed test is that I set up a new key schedule quite frequently. And I would suspect that something is going on here... Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
