• File size measurements show the distribution of size of files.
• Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
• It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.

• There are 271 files with 22,422 lines of code.
• 0 very long files (0 lines of code)
• 2 long files (1,544 lines of code)
• 27 medium size files (7,426 lines of codeclsfd_ftr_w_mp_ins)
• 45 small files (6,178 lines of code)
• 197 very small files (7,274 lines of code)

There are 67 files with lines longer than 120 characters. In total, there are 158 long lines.

File	# lines	# units	# long lines
main.tf in testing/infra/terraform/modules/standalone_apm_server	275	-	30
mux.go in internal/beater/api	291	16	14
variables.tf in testing/infra/terraform/modules/ec_deployment	122	-	5
metadata_fetcher.go in internal/sourcemap	298	14	4
apikey.go in internal/beater/auth	145	10	4
pubsub.go in x-pack/apm-server/sampling/pubsub	291	8	4
steps_v7.go in functionaltests	131	8	4
config.go in systemtest/benchtest	61	1	4
beater.go in internal/beater	821	16	3
authenticator.go in internal/beater/auth	102	2	3
main.go in x-pack/apm-server	224	10	3
client.go in functionaltests/internal/esclient	183	9	3
utils.go in functionaltests	303	24	3
kibana.go in systemtest	231	9	3
search.go in systemtest/estest	112	5	3
variables.tf in testing/cloud	61	-	3
outputs.tf in testing/infra/terraform/modules/ec_deployment	46	-	3
main.tf in testing/benchmark	138	-	3
updatecli-compose.yaml in root	11	-	2
kibana.go in internal/agentcfg	66	3	2
sourcemap_fetcher.go in internal/sourcemap	62	3	2
rum.go in internal/beater/config	93	4	2
storage_manager.go in x-pack/apm-server/sampling/eventstorage	320	24	2
steps.go in functionaltests	189	10	2
main.go in systemtest/cmd/sendotlp	319	11	2
soaktest.go in systemtest/soaktest	60	2	2
main.go in systemtest/benchtest	233	6	2
main.tf in testing/infra/terraform/modules/rally_workers	229	-	2
reporter.go in internal/agentcfg	78	3	1
beat.go in internal/beatcmd	723	20	1
reloader.go in internal/beatcmd	204	7	1
locker.go in internal/beatcmd	40	3	1
logging.go in internal/beatcmd	44	2	1
cmd.go in internal/beatcmd	66	4	1
security_api.go in internal/elasticsearch	54	2	1
client.go in internal/elasticsearch	100	4	1
kibana.go in internal/sourcemap	64	3	1
processor.go in internal/sourcemap	111	5	1
elasticsearch.go in internal/sourcemap	100	4	1
tracing.go in internal/beater	47	1	1
grpc.go in internal/beater/otlp	102	4	1
http.go in internal/beater/otlp	163	7	1
server.go in internal/beater	155	4	1
metrics.go in internal/beater/interceptors	97	5	1
agentconfig.go in internal/beater/config	82	4	1
http.go in internal/beater	127	7	1
monitoring_middleware.go in internal/beater/middleware	67	5	1
handler.go in internal/beater/api/root	41	1	1
handler.go in internal/beater/api/config/agent	190	7	1
handler.go in internal/beater/api/intake	168	7	1