[Bug 258204] Extremely poor performance copying directory with lot of small files on nvme

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258204

--- Comment #7 from Ali Abdallah <ali.abdallah@suse.com> ---
(In reply to Eugene Grosbein from comment #6)

Yes, it seems ELI encryption is what causing the latency. 

# diskinfo -tv /dev/nvd0p3.eli
...
Transfer rates:
        outside:       102400 kbytes in   1.187733 sec =    86215 kbytes/sec
        middle:        102400 kbytes in   1.114451 sec =    91884 kbytes/sec
        inside:        102400 kbytes in   1.111975 sec =    92088 kbytes/sec

# diskinfo -tv /dev/nvd0p4
Transfer rates:
        outside:       102400 kbytes in   0.061792 sec =  1657172 kbytes/sec
        middle:        102400 kbytes in   0.061883 sec =  1654736 kbytes/sec
        inside:        102400 kbytes in   0.057609 sec =  1777500 kbytes/sec

Please let me know if you need more information.

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