OpenSSH slow on OSX High Sierra (maybe due to libcrypto)?

[Peter Moody]

On Thu, Jul 12, 2018 at 1:10 AM, Darren Tucker <dtucker at dtucker.net> wrote:

> If anyone has such a machine handy, could you please run "sysctl
> machdep.cpu.brand_string; /usr/bin/openssl speed rsa" and post the
> results for comparison?

$ /usr/bin/openssl speed rsa
[...]
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000622s 0.000037s   1606.5  27333.3
rsa 1024 bits 0.003932s 0.000176s    254.3   5689.6
rsa 2048 bits 0.025932s 0.000751s     38.6   1331.3
rsa 4096 bits 0.176667s 0.002718s      5.7    367.9

$ sysctl machdep.cpu.brand_string
machdep.cpu.brand_string: Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz

$ uname -a
Darwin localhost 17.6.0 Darwin Kernel Version 17.6.0: Tue May  8
15:22:16 PDT 2018; root:xnu-4570.61.1~1/RELEASE_X86_64 x86_64

vs

$ ./apps/openssl/openssl speed rsa
[...]
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000049s 0.000006s  20467.2 167761.5
rsa 1024 bits 0.000166s 0.000015s   6032.5  65297.8
rsa 2048 bits 0.000948s 0.000051s   1054.8  19469.8
rsa 4096 bits 0.007410s 0.000194s    134.9   5147.4