Like yourself it seems to be better under 129
pa...@workdellgx620:~/dedup_on$ pfexec zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
herring - - - - - FAULTED -
rpool 74G 57.2G 16.8G 77% 3.00x ONLINE -
pa...@workdellgx620:~/dedup_on$ pfexec zdb -S rpool
Simulated DDT histogram:
bucket allocated referenced
______ ______________________________ ______________________________
refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE
------ ------ ----- ----- ----- ------ ----- ----- -----
1 767K 41.8G 41.8G 41.8G 767K 41.8G 41.8G 41.8G
2 70.2K 5.37G 5.37G 5.37G 174K 14.5G 14.5G 14.5G
4 9.13K 297M 297M 297M 46.2K 1.44G 1.44G 1.44G
8 3.03K 32.3M 32.3M 32.3M 27.9K 308M 308M 308M
16 778 28.3M 28.3M 28.3M 15.7K 599M 599M 599M
32 411 21.8M 21.8M 21.8M 16.3K 927M 927M 927M
64 78 5.03M 5.03M 5.03M 6.02K 380M 380M 380M
128 20 1.65M 1.65M 1.65M 2.96K 247M 247M 247M
256 7 7K 7K 7K 2.45K 2.66M 2.66M 2.66M
512 3 1.50K 1.50K 1.50K 1.88K 962K 962K 962K
1K 5 6.50K 6.50K 6.50K 7.59K 10.4M 10.4M 10.4M
2K 1 4K 4K 4K 3.67K 14.7M 14.7M 14.7M
4K 1 512 512 512 4.13K 2.06M 2.06M 2.06M
16K 1 128K 128K 128K 20.5K 2.56G 2.56G 2.56G
Total 851K 47.5G 47.5G 47.5G 1.07M 62.7G 62.7G 62.7G
dedup = 1.32, compress = 1.00, copies = 1.00, dedup * compress / copies = 1.32
pa...@workdellgx620:~/dedup_on$
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