• There are 38 files with units, with 3,238 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 0 complex files (McCabe index sum 126-250; 0 lines of code)
• 4 medium complex files (McCabe index sum 51-125; 1,358 lines of code)
• 6 slightly complex files (McCabe index sum 26-50; 855 lines of code)
• 28 simple files (McCabe index sum 1-25; 1,025 lines of code)
• 7 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
spinnaker.go in spinnaker	438	16	99	23	10
monkey.go in config	313	48	73	23	5
mysql.go in mysql	287	17	64	22	13
chaosmonkey.go in command	320	9	52	16	41
grp.go in grp	163	15	42	26	13
eligible.go in eligible	176	18	41	23	9
schedule.go in schedule	170	18	38	22	6
eligible_instance_groups.go in deploy	96	7	34	35	14
deployment.go in deploy	133	24	32	24	4
term.go in term	117	5	26	22	14
terminator.go in spinnaker	134	6	24	18	11
fromjson.go in spinnaker	88	1	20	23	20
asg.go in deploy	61	12	15	25	3
install.go in command	86	5	15	17	6
chaosmonkey.go in root	109	5	13	12	4
schedule.go in command	60	4	11	18	4
urls.go in spinnaker	34	9	10	29	2
app.go in deploy	56	3	8	14	6
tracker.go in tracker	31	3	6	19	4
config.go in spinnaker	27	1	6	22	6
fetchschedule.go in command	30	2	6	20	4
dumpmonkeyconfig.go in command	38	1	5	13	5
errorcounter.go in errorcounter	21	3	4	19	2
cal.go in cal	15	2	4	27	3
outage.go in outage	21	3	4	19	2
decryptor.go in decryptor	21	3	4	19	2
regions.go in command	23	1	4	17	4
eligible.go in command	25	1	4	16	4
constrainer.go in constrainer	16	3	3	19	1
env.go in env	16	3	3	19	1
osutil.go in command	17	2	3	18	2
terminate.go in command	16	1	3	19	3
terminator.go in term	14	2	2	14	1
dumpconfig.go in command	15	1	2	13	2
outage.go in command	14	1	2	14	2
migrate.go in command	12	1	2	17	2
clock.go in clock	12	2	2	17	1
main.go in cmd/chaosmonkey	13	1	1	8	1

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.