facebook / openbmc-uboot
Unit Size

The distribution of size of units (measured in lines of code).

Intro
  • Unit size measurements show the distribution of size of units of code (methods, functions...).
  • Units are classified in four categories based on their size (lines of code): 1-20 (small units), 20-50 (medium size units), 51-100 (long units), 101+ (very long units).
  • You should aim at keeping units small (< 20 lines). Long units may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
Unit Size Overall
  • There are 47,844 units with 948,325 lines of code in units (43.7% of code).
    • 834 very long units (147,438 lines of code)
    • 2,522 long units (171,005 lines of code)
    • 10,221 medium size units (315,162 lines of code)
    • 12,101 small units (179,361 lines of code)
    • 22,166 very small units (135,359 lines of code)
15% | 18% | 33% | 18% | 14%
Legend:
101+
51-100
21-50
11-20
1-10
Unit Size per Extension
101+
51-100
21-50
11-20
1-10
c15% | 18% | 33% | 18% | 12%
h11% | 3% | 24% | 19% | 40%
py8% | 10% | 30% | 22% | 27%
pl38% | 10% | 24% | 15% | 10%
cc0% | 21% | 39% | 24% | 13%
inc0% | 0% | 100% | 0% | 0%
Unit Size per Logical Component
primary logical decomposition
101+
51-100
21-50
11-20
1-10
drivers12% | 18% | 35% | 20% | 13%
board27% | 13% | 27% | 16% | 15%
arch12% | 15% | 32% | 20% | 18%
lib20% | 22% | 32% | 13% | 9%
fs18% | 24% | 33% | 15% | 8%
tools14% | 18% | 31% | 17% | 17%
cmd14% | 24% | 37% | 16% | 6%
scripts23% | 15% | 30% | 18% | 12%
common13% | 22% | 31% | 19% | 12%
net19% | 23% | 28% | 18% | 10%
disk13% | 26% | 37% | 16% | 5%
post0% | 50% | 27% | 13% | 7%
env0% | 21% | 52% | 16% | 9%
doc0% | 24% | 38% | 21% | 15%
include0% | 1% | 5% | 12% | 80%
api0% | 0% | 49% | 18% | 31%
Alternative Visuals
Longest Units
Top 50 longest units
Unit# linesMcCabe index# params
1523 1 1
1284 1 1
1142 3 1
1128 49 1
1125 18 1
1125 18 1
1069 26 1
992 18 1
946 3 1
946 3 1
922 150 1
861 332 0
810 19 1
777 3 1
705 103 2
644 144 1
633 38 1
587 171 2
550 90 14
515 99 7
494 102 0
477 77 1
476 75 3
470 43 2
464 73 3
463 91 7
453 104 4
445 88 4
436 118 9
436 118 9
432 94 1
430 114 4
408 106 1
404 71 4
402 3 4
384 43 2
383 27 1
378 77 8
375 38 3
373 89 5
365 3 1
359 76 1
352 73 7
343 67 5
339 72 4
334 64 3
329 50 3
327 89 4
320 58 2
318 11 1