Use -XX:+IProfileDuringStartupPhase in populate_scc.sh scripts#564
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@rmnattas Thanks for the PR. The change itself looks fine. Few comments:
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Thanks @leochr, updated the PR as requested (changing version 23.0.0.12 and latest only in |
Make use of `-XX:+IProfileDuringStartupPhase` in the `populate_scc.sh` script to enforce collecting IProfile information during JVM startup phase and have more information to store into the SCC. Signed-off-by: Abdulrahman Alattas <rmnattas@gmail.com>
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@leochr Updated the PR to modify 24.0.0.1 and latest instead. Similarly for OpenLiberty/ci.docker#482 |
leochr
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Jan 5, 2024
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Add
-XX:+IProfileDuringStartupPhaseoption to the populate scc scriptWhen populating the SCC during the build of both the Liberty and app containers, the JVM can disable the IProfiler collection during JVM startup to enhance startup time, but this limits the amount of IProfiler information that can be stored into the SCC.
OpenJ9 can now support
-XX:+IProfileDuringStartupPhaseto enforce collecting IProfiler information during startup and better populate the SCC, which can be used in thepopulate_scc.shscript.The option will be ignored if the used OpenJ9 build does not have the new option implemented.
Effect is larger amount of JIT Data in the SCC after a
populate_sccrun.There’s no functional implications on Liberty, and performance effect is application dependent.
Other than OpenJ9 testing, we have used the option in the
populate_scc.shscript during the CI process of building the containers.OpenJ9 PR: eclipse-openj9/openj9#18381
Corresponding OpenLiberty PR: OpenLiberty/ci.docker#482