PEBKAC
Intel Core i7 testing with a Apple MacBook Air and Intel HD 3000 384MB on OS X 10.8.2 (12C60) via the Phoronix Test Suite.


metal: 

	Processor: Intel Core i7 @ 1.80GHz (2 Cores), Motherboard: Apple MacBook Air, Chipset: Intel 6, Memory: 2 x 2048 DDR3-1333MHz, Disk: 251GB APPLE SSD SM256C, Graphics: Intel HD 3000 384MB, Monitor: Color LCD

	OS: OS X 10.8.2 (12C60), Kernel: 12.2.0 (x86_64), Display Server: X Server 1.13.0, OpenGL: 2.1, Compiler: Clang 4.1 + GCC 4.2.1 + Xcode 4.5.2, File-System: Unknown, Screen Resolution: 1366x768

pls-quad: 

	Processor: Intel Core i7-2677M @ 1.80GHz (4 Cores), Motherboard: Parallels Software Virtual, Chipset: Red Hat Virtio + ICH8/R, Memory: 1024MB, Disk: 17GB Tooless-0 SSD, Graphics: Device 1ab8:4005, Network: Intel 82545EM Gigabit

	OS: Ubuntu 12.04, Kernel: 3.2.0-33-generic (x86_64), Display Driver: device, Compiler: GCC 4.6, File-System: ext4

pls-quad-nobarrier: 

	Processor: Intel Core i7-2677M @ 1.80GHz (4 Cores), Motherboard: Parallels Software Virtual, Chipset: Red Hat Virtio + ICH8/R, Memory: 1024MB, Disk: 17GB Tooless-0 SSD, Graphics: Device 1ab8:4005, Network: Intel 82545EM Gigabit

	OS: Ubuntu 12.04, Kernel: 3.2.0-33-generic (x86_64), Display Driver: device, Compiler: GCC 4.6, File-System: ext4


Threaded I/O Tester 0.3.3
Test: Read - Size Per Thread: 128MB - Thread Count: 16
MB/s > Higher Is Better
metal .............. 253.89 |=============================
pls-quad ........... 435.62 |==================================================
pls-quad-nobarrier . 353.97 |=========================================


Threaded I/O Tester 0.3.3
Test: Write - Size Per Thread: 128MB - Thread Count: 16
MB/s > Higher Is Better
metal .............. 235.13 |=================================================
pls-quad ........... 200.03 |==========================================
pls-quad-nobarrier . 240.09 |==================================================


Threaded I/O Tester 0.3.3
Test: Random Read - Size Per Thread: 128MB - Thread Count: 16
MB/s > Higher Is Better
metal .............. 153.01 |==================================================
pls-quad ........... 88.83  |=============================
pls-quad-nobarrier . 54.48  |==================


Threaded I/O Tester 0.3.3
Test: Random Write - Size Per Thread: 128MB - Thread Count: 16
MB/s > Higher Is Better
metal .............. 75.07 |===================================================
pls-quad ........... 51.79 |===================================
pls-quad-nobarrier . 62.31 |==========================================