Linux / Lib
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 2,949 units with 56,892 lines of code in units (44.2% of code).
    • 68 very long units (10,724 lines of code)
    • 132 long units (8,935 lines of code)
    • 531 medium size units (16,332 lines of code)
    • 835 small units (12,325 lines of code)
    • 1,383 very small units (8,576 lines of code)
18% | 15% | 28% | 21% | 15%
Legend:
101+
51-100
21-50
11-20
1-10
Unit Size per Extension
101+
51-100
21-50
11-20
1-10
c19% | 15% | 28% | 21% | 14%
h0% | 7% | 21% | 22% | 48%
uc0% | 0% | 0% | 0% | 100%
Unit Size per Logical Component
primary logical decomposition
101+
51-100
21-50
11-20
1-10
ROOT14% | 10% | 31% | 26% | 17%
zstd21% | 20% | 22% | 18% | 17%
zlib_inflate84% | 0% | 12% | 1% | 1%
mpi29% | 27% | 19% | 16% | 8%
lz444% | 14% | 17% | 13% | 9%
raid628% | 34% | 26% | 3% | 6%
crypto20% | 20% | 34% | 11% | 11%
lzo74% | 21% | 0% | 0% | 4%
xz14% | 20% | 36% | 17% | 10%
zlib_dfltcc30% | 14% | 17% | 30% | 6%
zlib_deflate0% | 35% | 38% | 23% | 2%
8420% | 40% | 33% | 15% | 10%
kunit0% | 0% | 23% | 43% | 33%
math0% | 0% | 47% | 40% | 12%
dim0% | 0% | 72% | 21% | 6%
pldmfw0% | 0% | 70% | 27% | 2%
vdso0% | 0% | 51% | 21% | 26%
reed_solomon0% | 0% | 0% | 45% | 55%
Alternative Visuals
Longest Units
Top 50 longest units
Unit# linesMcCabe index# params
515 1 1
417 111 2
299 84 4
243 40 2
235 77 10
235 41 4
227 47 3
226 55 4
217 68 7
211 36 3
209 37 4
209 42 10
207 61 10
206 81 3
195 36 7
194 52 1
186 32 1
181 35 7
179 42 6
160 44 4
160 62 6
154 48 5
153 40 3
152 40 4
151 36 6
150 24 1
146 46 3
145 16 4
145 27 6
144 24 3
142 27 5
141 43 3
140 2 5
139 43 7
134 21 6
134 33 1
132 46 2
130 2 5
130 32 3
128 23 5
126 4 5
124 31 3
122 35 6
121 9 1
120 35 4
119 38 3
118 22 6
118 16 5
117 28 3
117 33 4