test padding.js fails for me quite often when using parallel tests.
Running single test seems to pass fairly reliably.
Failure is for line 61:
assert(p.stats().paddingFactor > ps + 0.05);

See below for padding numbers during tests.
Basically it seems that the padding numbers are close but narrowly miss the target.
Is there a chance that padding is affected by other things happening on global / db / other collection?
Or maybe test runs slower in parallel and doesnt hit the threshold, seems like the room for error is small.

Good run:
1
1.1000000000000036
1.1980000000000075
1.3010000000000113
1.400000000000015
1.4980000000000189
1.6010000000000226
1.7000000000000264
1.7980000000000302
1.901000000000034
1.9960000000000377
1.9620000000000415
1.9290000000000451
1.8960000000000488
1.8620000000000525
1.8290000000000561
1.7960000000000598
1.7620000000000635
1.7290000000000671
1.6960000000000708
1.6620000000000745
1.6930000000000782
1.728000000000082
1.7580000000000857
1.7570000000000894
1.760000000000093
1.7580000000000968
1.7570000000001005
1.7600000000001041
1.758000000000108
1.7570000000001116
1.7510000000001154
1.738000000000119
1.7290000000001227
1.7150000000001264
1.70600000000013
1.7210000000001338
1.7560000000001375
1.7860000000001413
1.813000000000145

Bad run:
1
1.105000000000003
1.2040000000000068
1.3060000000000107
1.4020000000000148
1.4940000000000193
1.5930000000000235
1.6920000000000273
1.7900000000000311
1.8940000000000348
1.9920000000000386
1.9590000000000423
1.925000000000046
1.8920000000000496
1.8580000000000534
1.826000000000057
1.7920000000000607
1.761000000000064
1.7270000000000678
1.6950000000000713
1.661000000000075
1.6930000000000787
1.7330000000000818
1.7660000000000853
1.7670000000000887
1.7680000000000922
1.7710000000000958
1.774000000000099
1.7750000000001025
1.780000000000106
1.7790000000001096
1.7750000000001127
1.7660000000001164
1.7570000000001196
1.7450000000001236
1.7470000000001256
1.7660000000001292
1.797000000000133
1.813000000000137
1.8160000000001406