This is a SUNBUG for https://bugs.openjdk.java.net/show_bug.cgi?id=100127

Description From Stepan K:

Created an attachment (id=172) [details]
The patch

syscall

prctl(PR_SET_NAME, "title")

sets OS thread name in Linux, that can be later inspected by command

ps -L -p <jvm-pid>

I propose setting thread name to ThreadType for threads created by JVM. This
can be useful to understand what JVM does, and to diagnose and resolve
problems.

Sample output:

===
[nga@garden:~/devel/left/jdk7]% ps -L -p 1758
  PID LWP TTY TIME CMD
 1758 1758 pts/4 00:00:00 java
 1758 1759 pts/4 00:00:00 java
 1758 1760 pts/4 00:00:00 pgc
 1758 1761 pts/4 00:00:00 pgc
 1758 1762 pts/4 00:00:00 pgc
 1758 1763 pts/4 00:00:00 pgc
 1758 1764 pts/4 00:00:00 pgc
 1758 1765 pts/4 00:00:00 pgc
 1758 1766 pts/4 00:00:00 pgc
 1758 1767 pts/4 00:00:00 pgc
 1758 1768 pts/4 00:00:00 vm
 1758 1769 pts/4 00:00:00 rjava
 1758 1770 pts/4 00:00:00 rjava
 1758 1771 pts/4 00:00:00 rjava
 1758 1772 pts/4 00:00:00 compiler
 1758 1773 pts/4 00:00:00 compiler
 1758 1774 pts/4 00:00:00 rjava
 1758 1775 pts/4 00:00:00 watcher
===

Patch attached.