Linux / Arch / X86
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 11,718 units with 171,421 lines of code in units (56.6% of code).
    • 86 very long units (16,802 lines of code)
    • 334 long units (22,433 lines of code)
    • 1,742 medium size units (53,327 lines of code)
    • 2,678 small units (39,281 lines of code)
    • 6,878 very small units (39,578 lines of code)
9% | 13% | 31% | 22% | 23%
Legend:
101+
51-100
21-50
11-20
1-10
Unit Size per Extension
101+
51-100
21-50
11-20
1-10
c8% | 14% | 33% | 24% | 19%
pl94% | 3% | 1% | <1% | <1%
h3% | 1% | 8% | 14% | 72%
Unit Size per Logical Component
primary logical decomposition
101+
51-100
21-50
11-20
1-10
kvm12% | 15% | 29% | 21% | 20%
crypto39% | 11% | 14% | 14% | 19%
math-emu42% | 18% | 24% | 4% | 10%
kernel3% | 13% | 36% | 26% | 20%
net46% | 6% | 29% | 9% | 7%
events7% | 12% | 32% | 23% | 24%
mm4% | 12% | 33% | 26% | 23%
pci7% | 11% | 33% | 25% | 22%
entry27% | 0% | 19% | 27% | 25%
boot3% | 8% | 44% | 22% | 21%
ia3231% | 32% | 20% | 10% | 5%
xen1% | 11% | 29% | 32% | 25%
lib0% | 25% | 30% | 28% | 15%
platform0% | 8% | 41% | 29% | 20%
tools0% | 42% | 31% | 15% | 9%
um0% | 15% | 41% | 23% | 19%
hyperv0% | 17% | 48% | 19% | 14%
include0% | <1% | 7% | 16% | 75%
realmode0% | 29% | 13% | 50% | 7%
power0% | 0% | 60% | 20% | 19%
video0% | 0% | 0% | 100% | 0%
purgatory0% | 0% | 0% | 58% | 41%
Alternative Visuals
Longest Units
Top 50 longest units
Unit# linesMcCabe index# params
2470 28 0
699 232 5
626 100 1
607 219 6
393 95 3
356 82 3
286 117 1
275 68 3
269 117 2
262 68 2
252 70 1
250 102 2
240 78 4
235 111 2
234 57 3
233 23 1
210 1 4
197 36 1
196 4 0
189 50 3
169 27 2
168 1 3
163 92 2
162 41 3
161 16 2
160 27 1
153 12 2
153 39 1
151 41 3
151 26 2
149 39 1
148 39 3
148 1 1
145 43 1
142 43 3
140 58 2
138 54 2
138 52 2
136 23 1
133 50 2
133 20 1
131 28 1
130 50 6
129 31 2
128 40 2
127 38 3
127 39 5
125 45 3
125 36 2
124 62 2