During my baseline testing on JDK7-B108, the following two tests
hung in all eight of my WinXP configurations:

    heapdump/JMapHeap
    heapdump/JMapPerm

The automated Tonga test timeout logic didn't handle these hangs and
it is not clear if Tonga even realized that the test run was hung.

My machine is a MacBook Pro:

  Model Name: MacBook Pro
  Model Identifier: MacBookPro5,2
  Processor Name: Intel Core 2 Duo
  Processor Speed: 2.8 GHz
  Number Of Processors: 1
  Total Number Of Cores: 2
  L2 Cache: 6 MB
  Memory: 4 GB
  Bus Speed: 1.07 GHz
  Boot ROM Version: MBP52.008E.B05
  SMC Version (system): 1.42f4
  Serial Number (system): W80040AF8YB
  Hardware UUID: AABAF561-9DCC-5311-868C-518EB18115E1
  Sudden Motion Sensor:
  State: Enabled

I'm running VMware Fusion 3.X and I have WinXP VMware client:

    Windows XP Professional, SP3
    two virtual processors enabled
    2GB of RAM enabled

I'm running the following version of Cygwin:

$ uname -a
CYGWIN_NT-5.1 oliver-lt 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

I updated my Cygwin packages on 2010.03.31.

In one of my configurations, the test run was hung for 12+ hours over
the holiday weekend before I noticed the hang.

In my analysis of subsequent reproductions of the hang, there is a
jmap process that does not show up via Cygwin ps, but it does show
up in the Windows Task Manager. When this jmap process is killed,
the test finishes with a PASS.

This bug does not reproduce with JDK7-B107 bits.