tweety# openssl speed -elapsed -evp aes-256-xts
You have chosen to measure elapsed time instead of user CPU time.
Doing aes-256-xts for 3s on 16 size blocks: 17719024 aes-256-xts's in 3.10s
Doing aes-256-xts for 3s on 64 size blocks: 12508936 aes-256-xts's in 3.09s
Doing aes-256-xts for 3s on 256 size blocks: 4577014 aes-256-xts's in 3.02s
Doing aes-256-xts for 3s on 1024 size blocks: 1318310 aes-256-xts's in 3.01s
Doing aes-256-xts for 3s on 8192 size blocks: 177263 aes-256-xts's in 3.09s
Doing aes-256-xts for 3s on 16384 size blocks: 86680 aes-256-xts's in 3.01s
OpenSSL 1.1.1d-freebsd  10 Sep 2019
built on: reproducible build, date unspecified
options:bn(64,64) rc4(16x,int) des(int) aes(partial) idea(int) blowfish(ptr)
compiler: clang
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-256-xts      91406.96k   259425.83k   388548.17k   448814.36k   469378.10k   472158.79k