Ankur Mhatre
958b401f0f
Adds spring-boot-startup-time/, the companion project for BLOG-618: a runnable Spring Boot 4.1.1 application on JDK 25 that installs BufferingApplicationStartup and FlightRecorderApplicationStartup behind a system property, and a /diag/startup endpoint that computes step self time -- the number /actuator/startup does not give you and the one that names the actual culprits. Captured under docs/output/: the step tree sorted both ways, the same startup as JFR events, a +5000-class experiment putting 0.11 ms per scanned class on the classpath scan tax, the silent truncation a 2048-step buffer performs, and JDK 25 AOT cache timings (6.93 s to 4.82 s). Post body and metadata live in post/. Moves the existing Actuator project into actuator-in-production/ so the repository holds one directory per article; the root README is now an index.
68 lines
3.3 KiB
Plaintext
68 lines
3.3 KiB
Plaintext
=== Boot's own startup line ===
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Started StartupDiagnosisApplication in 6.6 seconds (process running for 7.4)
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=== /diag/startup ===
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recorded steps: 400
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-- self time by step name (self = duration minus direct children) --
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self ms count step
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4253.68 361 spring.beans.instantiate
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1014.51 1 spring.context.config-classes.parse
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402.81 1 spring.boot.application.environment-prepared
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160.39 1 spring.boot.webserver.create
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153.07 1 spring.boot.application.started
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113.74 1 spring.context.refresh
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95.72 1 spring.data.repository.proxy
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51.50 6 spring.beans.smart-initialize
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43.85 1 spring.data.repository.scanning
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35.02 1 spring.boot.application.starting
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31.10 9 spring.context.bean-factory.post-process
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22.48 1 spring.context.beandef-registry.post-process
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18.09 1 spring.context.beans.post-process
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13.78 1 spring.boot.application.context-loaded
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12.92 1 spring.data.repository.composition
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5.15 5 spring.data.repository.postprocessor
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4.70 1 spring.data.repository.init
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0.89 1 spring.data.repository.target
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0.68 1 spring.context.config-classes.enhance
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0.48 1 spring.boot.application.ready
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0.42 1 spring.data.repository.postprocessors
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0.26 1 spring.boot.application.context-prepared
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0.07 1 spring.data.repository.metadata
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-- slowest individual steps by SELF time (the culprits) --
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self ms total ms step / tags
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1413.83 1803.62 spring.beans.instantiate &entityManagerFactory
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1014.51 1066.42 spring.context.config-classes.parse
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503.84 503.84 spring.beans.instantiate tariffCacheWarmer
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402.81 402.81 spring.boot.application.environment-prepared
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326.96 326.96 spring.beans.instantiate keystoreLoader
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268.41 312.88 spring.beans.instantiate dataSourceScriptDatabaseInitializer
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204.92 470.83 spring.beans.instantiate orderRepository
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160.39 460.45 spring.boot.webserver.create
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153.07 153.07 spring.boot.application.started
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113.74 5829.88 spring.context.refresh
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95.72 101.29 spring.data.repository.proxy
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64.25 64.25 spring.beans.instantiate jpaMappingContext
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-- slowest individual steps by TOTAL time (the containers) --
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total ms self ms step / tags
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5829.88 113.74 spring.context.refresh
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1803.62 1413.83 spring.beans.instantiate &entityManagerFactory
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1344.76 18.09 spring.context.beans.post-process
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1088.90 22.48 spring.context.beandef-registry.post-process
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1066.42 1014.51 spring.context.config-classes.parse
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514.24 10.41 spring.beans.instantiate reportTemplateRegistry
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503.84 503.84 spring.beans.instantiate tariffCacheWarmer
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479.45 8.62 spring.beans.instantiate orderController
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470.83 204.92 spring.beans.instantiate orderRepository
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460.45 160.39 spring.boot.webserver.create
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402.81 402.81 spring.boot.application.environment-prepared
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326.96 326.96 spring.beans.instantiate keystoreLoader
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=== actuator's own endpoint: GET peeks, POST drains ===
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GET /actuator/startup -> events in response: 400
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POST /actuator/startup -> events in response: 400
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POST /actuator/startup -> events in response: 0
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GET /actuator/startup -> events in response: 0
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