AES-NI to slow

[t2d]

Today I did a test and encryped as many blocks as possible with AES.
The numbers variate around almost the same amount, whether I use use_aesni=True or use_aesni=False.
I checked with python -v and _AESNI.c is loaded at runtime.
How can that be?
If I test with openssl speed AESNI is up to 6 times faster than plain AES.

[dlitz]

What does your test code look like? Are you passing a large buffer to .encrypt(...), or are you invoking .encrypt(...) many times with small buffers? The latter is slow simply because of the Python interpreter's overhead.

[t2d]

yes, it was a lot of small ones. Thanks for the clarification.