
Lower is better for following benchmarks:
kernbench: (time in sec)
hackbench: (time in sec)
sysbench : (time in sec

Higher is better for following benchmarks:
specjbb: score (Throughput)
dbench : Throughput in MB/sec 
ebizzy : records/sec

In summary, current PV has huge benefit on non-PLE machine.

On PLE machine, the results become very sensitive to load, type of
workload and SPIN_THRESHOLD. Also PLE interference has significant
effect on them. But still it has slight edge over non PV.

Overall, specjbb, sysbench, kernbench seem to do well with PV.

dbench has been little unreliable (same reason I have not published
2x, 3x result but experimental values are included in tarball) but
seem to be on par with PV

hackbench non-overcommit case is better and ebizzy overcommit case is better.
[ebizzy seems to very sensitive w.r.t SPIN_THRESHOLD].

I have still not experimented with SPIN_THRESHOLD 2k/8k after having Rik's fix.

+-----------+-----------+-----------+------------+---------+
                              specjbb
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
|114232.2500|21774.0660	|122591.0000| 18239.0900 | 7.31733 |
|112154.5000|19696.6860	|113386.2500| 22262.5890 | 1.09826 |
+-----------+-----------+-----------+------------+---------+

+-----------+-----------+-----------+------------+---------+
                              kernbench
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
|   48.9150 |   0.8608  |   48.5550 |   0.7372   | 0.74143 |
|   96.3691 |   7.9724  |   96.6367 |   1.6938   |-0.27691 |
|  192.6972 |   9.1881  |  188.3195 |   8.1267   | 2.32461 |
|  320.6500 |  29.6892  |  302.1225 |  16.0515   | 6.13245 |
++-----------+-----------+-----------+------------+---------+

+-----------+-----------+-----------+------------+---------+
                              sysbench
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
|   12.4082 |   0.2370  |   12.2797 |   0.1037   | 1.04644 |
|   14.1705 |   0.4272  |   14.0300 |   1.1478   | 1.00143 |
|   19.3769 |   1.0833  |   18.9745 |   0.0560   | 2.12074 |
|   24.5373 |   1.3237  |   22.3078 |   0.8999   | 9.99426 |
+-----------+-----------+-----------+------------+---------+

+-----------+-----------+-----------+------------+---------+
                              hackbench 
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
|   73.2627 |  11.2413  |   67.5125 |   2.5722   |  8.51724|
|  134.4294 |   1.9688  |  153.6160 |   5.2033   |-12.48998|
|  215.4521 |   3.8672  |  238.8965 |   3.0035   | -9.81362|
|  303.8553 |   5.0427  |  310.3569 |   6.1463   | -2.09488|
++-----------+-----------+-----------+------------+--------+

+-----------+-----------+-----------+------------+---------+
                              ebizzy                                   
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
| 1108.6250 |  19.3090  | 1088.2500 |   11.0809	 |-1.83786 |
| 1662.6250 | 150.5466  | 1064.0000 |    2.8284	 |-36.00481|
| 1394.0000 |  85.0867  | 1073.2857 |   10.3877	 |-23.00676|
| 1172.1250 |  20.3501  | 1245.8750 |   25.3852	 | 6.29199 |
+-----------+-----------+-----------+------------+---------+

+-----------+-----------+-----------+------------+---------+
                              dbench                                   
+-----------+-----------+-----------+------------+---------+
|   value   |   stdev   |   value   |    stdev   | %improve|
+-----------+-----------+-----------+------------+---------+
|   29.0378 | 1.1625    | 28.8466   |    1.1132  |-0.65845 |
+-----------+-----------+-----------+------------+---------+
