gistfile1.txt

vmstat and iostat metrics for q1 (first PK scan), q5 (second PK scan) and q4 (scan of 3rd secondary index)
* for q1, not only is the InnoDB PK ~200gb, but from iostat I see ~300GB of reads. For q5 that returns to ~207 GB which is what I expected
* toku has the best scan times
* myrocks and innodb have similar CPU rates

q1
secs    rMB/s   wMB/s   rKB/o   wKB/o   r/o     rGB     cs/o    Mcpu/o  wa.sec  engine
1043     98       8.1   0.052   0.004   0.011    99     0.011   1.918    1.2    myrocks.none
 881    116      10.7   0.052   0.005   0       100     0.004   1.768    0.2    myrocks.none.ra
1260     36       6.6   0.023   0.004   0.003    44     0.012   2.150    0.1    myrocks.zstd
1160     40       8.5   0.024   0.005   0        45     0.006   2.305    0.3    myrocks.zstd.ra
3247     95      77.5   0.157   0.129   0.010   299     0.047   4.485   32.6    inno5635
2730    112     109.5   0.157   0.153   0.010   299     0.196   8.960   38.2    inno5717
 757    151     19.6    0.058   0.008   0.001   110     0.003   1.565    0.1    toku5717.none

q5
secs    rMB/s   wMB/s   rKB/o   wKB/o   r/o     rGB     cs/o    Mcpu/o  wa.sec  engine
1022     97     0       0.051   0       0.003    97     0.011   1.846    1.0    myrocks.none
 881    113     0       0.051   0       0        97     0.004   1.586    0.3    myrocks.none.ra
2617     81     0       0.108   0       0.007   207     0.026   2.731   31.9    inno5717

q4
secs    rMB/s   wMB/s   rKB/o   wKB/o   r/o     rGB     cs/o    Mcpu/o  wa.sec  engine
1269     36     0       0.023   0       0.001   45      0.009   1.996    1.2    myrocks.none
1037     44     0       0.024   0       0       45      0.005   1.804    0.3    myrocks.none.ra
1263     16     0       0.010   0       0.001   20      0.008   1.845    0      myrocks.zstd
1196     17     0       0.010   0       0       20      0.005   1.970    0.2    myrocks.zstd.ra
1413     41     0       0.029   0       0.002   56      0.010   1.770   14.1    inno5635
1201     51     0       0.031   0       0.002   59      0.010   1.430   12.6    inno5717
 909     85     4.1     0.039   0.002   0       75      0.003   1.685    0.2    toku5717.none

du.gb   ts.dl   ts.il   engine
217      97     116     myrocks.jun16.none
218      97     116     myrocks.jun16.none.ra
461     220     206     inno5717

inno5717
#PAGE_COUNT     PAGE_TYPE
===============================================
26033375        Index page
       0        Undo log page
       1        Inode page
       0        Insert buffer free list page
 4134880        Freshly allocated page
    1824        Insert buffer bitmap
       0        System page
       0        Transaction system page
       1        File Space Header
    1823        Extent descriptor page
       0        BLOB page
       0        Compressed BLOB page
       0        Other type of page