CPU usage : JVM build vs Native Build

[MastanaGuru]

Hi All,

Just about a month or so, on using Quarkus. I am running an app which retrieves data from a DB2 db. Using multi-stage docker builds, I build the app in both jvm and native mode. Running an hour long load test on the application, I see the native app cpu usage is almost 4-5 times (25-35m compared to 5-10m) the jvm build. I understand GC in native build is not as efficient as a JVM build, but could there be other reason the cpu is so high.

Also, is there a way to set heap size in a native build ?

Thanks
Raj