Enable JFR continuous profiling with default setting (#7006)

Enable JFR continuous profiling with default setting

Signed-off-by: Ameziane H <ameziane.hamlat@consensys.net>

CHANGELOG.md

@@ -24,6 +24,8 @@
 - `admin_nodeInfo` JSON/RPC call returns the currently active EVM version [#7127](https://github.com/hyperledger/besu/pull/7127)
 - Improve the selection of the most profitable built block [#7174](https://github.com/hyperledger/besu/pull/7174)
 - Support for eth_maxPriorityFeePerGas [#5658](https://github.com/hyperledger/besu/issues/5658)
+- Enable continuous profiling with default setting [#7006](https://github.com/hyperledger/besu/pull/7006)
+
 ### Bug fixes
 - Make `eth_gasPrice` aware of the base fee market [#7102](https://github.com/hyperledger/besu/pull/7102)
 - Validation errors ignored in accounts-allowlist and empty list [#7138](https://github.com/hyperledger/besu/issues/7138)

build.gradle

@@ -634,7 +634,9 @@ startScripts {
   defaultJvmOpts = applicationDefaultJvmArgs + [
     "-XX:G1ConcRefinementThreads=2",
     "-XX:G1HeapWastePercent=15",
-    "-XX:MaxGCPauseMillis=100"
+    "-XX:MaxGCPauseMillis=100",
+    "-XX:StartFlightRecording,dumponexit=true,settings=default.jfc",
+    "-Xlog:jfr*=off"
   ]
   unixStartScriptGenerator.template = resources.text.fromFile("${projectDir}/besu/src/main/scripts/unixStartScript.txt")
   windowsStartScriptGenerator.template = resources.text.fromFile("${projectDir}/besu/src/main/scripts/windowsStartScript.txt")