• There are 280 files with units, with 24,204 lines of code.
• 1 very complex files (McCabe index sum 251+; 1,656 lines of code)
• 4 complex files (McCabe index sum 126-250; 3,764 lines of code)
• 16 medium complex files (McCabe index sum 51-125; 5,131 lines of code)
• 17 slightly complex files (McCabe index sum 26-50; 3,009 lines of code)
• 242 simple files (McCabe index sum 1-25; 10,644 lines of code)
• 197 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
flame-graph.js in frontend/src/components/jfr	1656	85	287	17	36
HeapDumpAnalyzerImpl.java in analysis/heap-dump/impl/src/main/java/org/eclipse/jifa/hda/impl	1831	68	244	13	28
GCModel.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	828	86	202	24	19
JStackParser.java in analysis/thread-dump/src/main/java/org/eclipse/jifa/tda/parser	696	25	136	20	34
GCEvent.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/event	409	60	126	31	12
AbstractPreUnifiedGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	717	21	103	14	21
AnalysisApiArgumentResolverFactory.java in server/src/main/java/org/eclipse/jifa/server/support	343	20	85	25	16
JFRAnalyzerImpl.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr	378	23	78	21	19
EventAbnormalDetector.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/diagnoser	220	12	73	33	33
Model.java in analysis/heap-dump/api/src/main/java/org/eclipse/jifa/hda/api	688	34	73	11	6
utils.ts in frontend/src/components/gclog	227	17	73	32	27
RecordedEvent.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr/model/jfr	274	21	69	25	27
UnifiedG1OrGenerationalGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	239	13	62	26	13
GCLogUtil.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/util	255	13	61	24	13
CPUTimeExtractor.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr/extractor	259	15	59	23	13
GCMemoryItem.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/event/eventInfo	162	18	58	36	8
PreUnifiedG1GCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	237	13	56	24	28
AbstractApiExecutor.java in analysis/src/main/java/org/eclipse/jifa/analysis	317	21	56	18	13
FileServiceImpl.java in server/src/main/java/org/eclipse/jifa/server/service/impl	377	24	56	15	7
G1GCModel.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	191	16	54	28	17
VmOptions.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model/modeInfo	247	16	53	21	12
GlobalDiagnoser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/diagnoser	240	15	47	20	7
PreUnifiedGenerationalGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	198	11	46	23	16
Validate.java in common/src/main/java/org/eclipse/jifa/common/util	140	40	46	33	2
WorkerServiceImpl.java in server/src/main/java/org/eclipse/jifa/server/service/impl	350	11	43	12	11
UnifiedZGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	226	12	40	18	11
UnifiedG1GCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	149	9	37	25	21
AbstractUnifiedGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	139	11	37	27	8
ThreadDumpAnalyzer.java in analysis/thread-dump/src/main/java/org/eclipse/jifa/tda	215	12	36	17	6
UserServiceImpl.java in server/src/main/java/org/eclipse/jifa/server/service/impl	191	11	33	17	6
StorageServiceImpl.java in server/src/main/java/org/eclipse/jifa/server/service/impl	294	16	32	11	8
GCLogParserFactory.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	131	3	31	24	19
WallClockExtractor.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr/extractor	133	8	30	23	8
CallSiteTree.java in analysis/thread-dump/src/main/java/org/eclipse/jifa/tda/model	120	11	29	24	7
Snapshot.java in analysis/thread-dump/src/main/java/org/eclipse/jifa/tda/model	89	4	29	33	23
UnifiedGenerationalGCLogParser.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/parser	105	7	27	26	17
SearchPredicate.java in analysis/heap-dump/api/src/main/java/org/eclipse/jifa/hda/api	112	3	27	24	21
HeapDumpAnalysisApiExecutor.java in analysis/heap-dump/provider/src/main/java/org/eclipse/jifa/hdp/provider	177	9	26	15	11
K8SWorkerScheduler.java in server/src/main/java/org/eclipse/jifa/server/service/impl	179	5	25	14	14
EventVisitor.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr/extractor	76	24	24	32	1
GCEventType.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	187	15	24	13	5
MemoryArea.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/event/eventInfo	60	2	24	40	23
util.ts in frontend/src/components/threaddump	86	5	24	28	15
Context.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/fragment	95	8	23	24	11
GenerationalGCModel.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	71	5	23	32	8
SuggestionGenerator.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/diagnoser	91	10	22	24	3
CMSGCModel.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	92	9	22	24	10
GlobalExceptionHandler.java in server/src/main/java/org/eclipse/jifa/server/controller	99	5	22	22	7
DimensionBuilder.java in analysis/jfr/src/main/java/org/eclipse/jifa/jfr/request	109	21	21	19	1
ZGCModel.java in analysis/gc-log/src/main/java/org/eclipse/jifa/gclog/model	123	13	21	17	9

• 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.