[openssl-dev] MD5 speed

[Kurt Roeckx]

I had some surprising results of the speed command when testing the
md5 speed on the 1.1.0-stable branch (for both a shared and a static
build):
openssl speed md5 returns:
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
md5             115869.46k   268237.29k   473617.41k   589905.92k   636772.35k   639429.29k

openssl speed -evp md5 returns:
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
md5              53991.08k   160454.36k   364985.86k   537559.38k   624238.59k   633066.84k

On the other hand, with 1.0.1 and 1.0.2-stable using a static build I get:
md5              38045.25k   123423.76k   310729.30k   505120.09k   620333.74k
md5              43182.80k   135651.38k   331369.48k   518042.97k   622193.32k

Using a shared build I get:
md5              57529.01k   169850.56k   376685.74k   545938.09k   626952.87k
md5              65634.19k   186133.65k   397608.96k   558070.78k   629697.19k

So was surprised me is that speed for small packets seems to be a
lot better in 1.1.0 when not using the EVP interface, but worse when
using it compared to 1.0.2. It this expected behaviour?

Sha1 doesn't seem to have this difference for instance.


Kurt