Reg slowness seen in openssl 1.1.1

[Jan Just Keijser]

On 10/05/19 03:16, ramakrushna mishra wrote:
> Hi ,
>
> The results on a AIX machine looks more bad If I am interpreting them 
> correctly.
>
> openssl 1.1.0e :
> The 'numbers' are in 1000s of bytes per second processed.
> type             16 bytes     64 bytes    256 bytes  1024 bytes   8192 
> bytes  16384 bytes
> sha1             65019.16k   151552.49k   266107.41k  337113.93k  
>  360792.93k   364102.89k
>
>
> openssl 1.1.1 :
> The 'numbers' are in 1000s of bytes per second processed.
> type             16 bytes     64 bytes    256 bytes  1024 bytes   8192 
> bytes  16384 bytes
> sha1             10641.28k    21433.09k    38464.85k 48496.92k    
> 49381.38k    51755.48k
>
>
the numbers for openssl 1.1.1 seem wrong - I've ran a similar test on a 
POWER8 and POWER9 box and the results for a "out of the box compiled" 
openssl 1.1.0 vs openssl 1.1.1 are much closer.
The only difference I did see was the (obsolete) sha1 test on Power8:  
openssl 1.1.1 seems to be a bit slower than 1.1.0, but not by a factor 
of 7 as shown above.

Also, on both POWER8 and POWER9, there does not appear to be a major 
difference in blowfish or aes-256 speed.

As for your code: I would check that you are not using a no-asm build 
for openssl 1.1.1.

HTH,

JJK