workload: 3000000 keys x 128 B loaded in random order, then 6000000 uniform random overwrites (seed 20260923)
logical data = 366.2 MiB; WA below is measured over the overwrite phase only, WAL excluded

== B+tree: 16 KiB pages, 128 entries/leaf, LRU buffer pool, checkpoint every 64 MiB of log
pool/data  pool_MiB  fill_after_load  SA     page_writes/update  WA     pool_miss_rate
    0.02       7.3            0.696  1.440               0.986  126.15           0.986
    0.05      18.3            0.696  1.440               0.964  123.37           0.964
    0.10      36.6            0.696  1.440               0.928  118.75           0.928
    0.25      91.5            0.696  1.440               0.821  105.03           0.819
    0.50     183.1            0.696  1.440               0.646   82.63           0.641
    1.00     366.2            0.696  1.440               0.313   40.11           0.290
    1.60     585.9            0.696  1.440               0.067    8.63           0.000
B+tree 100-entry scan: 2.11 leaves = 33.8 KiB read

== leveled LSM: memtable 1 MiB, L0 trigger 4, L1 4 MiB, T=10, SST 1 MiB
  flush->L0  written/user =  0.998   size now     2.0 MiB (target     4.0 MiB)
  L1         written/user =  1.887   size now     3.9 MiB (target     4.0 MiB)   written/pushed-from-L0 =  1.899
  L2         written/user =  5.140   size now    39.7 MiB (target    40.0 MiB)   written/pushed-from-L1 =  5.230
  L3         written/user =  6.372   size now   366.2 MiB (target   400.0 MiB)   written/pushed-from-L2 =  7.188
  total WA = 14.40   SA mean 1.116 max 1.128
  compactions   count  src_MiB_at_pick  dst_MiB  dst/src  overlap/pushed  picked_density/level
  L0->L1          183             3.98     3.62     0.91            0.91        -
  L1->L2          731             6.09    40.61     6.67            4.33     1.87
  L2->L3          654            41.56   364.14     8.76            7.12     1.83
  point lookup, key exists : runs overlapping 4.50, data blocks read 1.028 (bloom 10 bits/key)
  point lookup, key absent : runs overlapping 4.66, data blocks read 0.039
  100-entry scan            : runs touched 4.68, 4 KiB blocks read 8.08 = 32.3 KiB

== tiered LSM: memtable 1 MiB, merge when a level holds T=4 runs, 6 levels
  level 0  written/user =  0.998   runs now 2
  level 1  written/user =  0.994   runs now 2
  level 2  written/user =  0.984   runs now 0
  level 3  written/user =  0.966   runs now 1
  level 4  written/user =  0.768   runs now 0
  level 5  written/user =  0.500   runs now 1
  total WA = 5.21   SA mean 1.610 max 2.383
  point lookup, key exists : runs overlapping 5.76, data blocks read 1.039 (bloom 10 bits/key)
  point lookup, key absent : runs overlapping 6.00, data blocks read 0.051
  100-entry scan            : runs touched 6.00, 4 KiB blocks read 9.59 = 38.4 KiB