git: rdrand - Document massive improvement in performance

[Matthew Dillon]

commit f1af78531d94cf7d1abe2b0db2ad4f248e3cf008
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Feb 13 22:13:57 2020 -0800

    rdrand - Document massive improvement in performance
    
    * Document the huge difference going from 512 to 16 bytes.  General
      system performance is improved by 9.3% on a TR3990X.
    
      This is not entirely the fault of rdrand.  It is also in a large
      part due to the overhead of add_buffer_randomness().

Summary of changes:
 sys/dev/crypto/rdrand/rdrand.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f1af78531d94cf7d1abe2b0db2ad4f248e3cf008


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