Please, review the following test change Issue : https://bugs.openjdk.java.net/browse/JDK-8058506 Webrev: http://cr.openjdk.java.net/~jbachorik/8058506/webrev.00
The test fails intermittently due to the log printing blocking the test thread from time to time, resulting in incorrect data reported by ThreadMXBean.
The solution is to use per-thread non-blocking StringBuilders (wrapped in Formatter instances) and aggregate the log output only after the test is finished.
Thanks, -JB-
