ProcessBuilder/checkHandles/CheckHandles.java failed "AssertionError: Handle use increased by more than 10 percent."

The following test failed in the JDK15 CI:

java/lang/ProcessBuilder/checkHandles/CheckHandles.java

Here's a snippet from the log file:

----------System.out:(4/71)----------
mypid: 33796
Processes started: 50
minhandles: 414
maxhandles: 461
----------System.err:(12/739)----------
java.lang.AssertionError: Handle use increased by more than 10 percent.
at CheckHandles.main(CheckHandles.java:81)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.AssertionError
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.AssertionError: Handle use increased by more than 10 percent.


test result: Failed. Execution failed: `main' threw exception: java.lang.AssertionError: Handle use increased by more than 10 percent.


Starting this bug as a P2 since this is a Tier1 failure.