GCC AMD Bulldozer Compiler Optimization Levels
AMD FX-8150 Eight-Core Bulldozer processor testing various optimization levels of GCC compiler on Ubuntu Linux.


-O0: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

-O1: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

-O2: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

-O3: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

-Os: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

-Ofast: 

	Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

	OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080


GraphicsMagick 1.3.12
Operation: Blur
Iterations Per Minute > Higher Is Better
-O0 .... 64  |=====================================
-O1 .... 97  |========================================================
-O2 .... 97  |========================================================
-O3 .... 112 |=================================================================
-Os .... 82  |================================================
-Ofast . 109 |===============================================================


GraphicsMagick 1.3.12
Operation: Sharpen
Iterations Per Minute > Higher Is Better
-O0 .... 41 |============================
-O1 .... 64 |============================================
-O2 .... 65 |=============================================
-O3 .... 64 |============================================
-Os .... 68 |===============================================
-Ofast . 95 |==================================================================


GraphicsMagick 1.3.12
Operation: Resizing
Iterations Per Minute > Higher Is Better
-O0 .... 67  |==================================
-O1 .... 128 |=================================================================
-O2 .... 124 |===============================================================
-O3 .... 121 |=============================================================
-Os .... 101 |===================================================
-Ofast . 122 |==============================================================


GraphicsMagick 1.3.12
Operation: HWB Color Space
Iterations Per Minute > Higher Is Better
-O0 .... 81  |=================================
-O1 .... 157 |=================================================================
-O2 .... 158 |=================================================================
-O3 .... 156 |================================================================
-Os .... 122 |==================================================
-Ofast . 158 |=================================================================


GraphicsMagick 1.3.12
Operation: Local Adaptive Thresholding
Iterations Per Minute > Higher Is Better
-O0 .... 31 |===============================
-O1 .... 67 |==================================================================
-O2 .... 67 |==================================================================
-O3 .... 67 |==================================================================
-Os .... 62 |=============================================================
-Ofast . 67 |==================================================================


Himeno Benchmark 3.0
Poisson Pressure Solver
MFLOPS > Higher Is Better
-O0 .... 240.43 |=====================
-O1 .... 410.08 |====================================
-O2 .... 588.70 |====================================================
-O3 .... 675.92 |===========================================================
-Os .... 540.10 |================================================
-Ofast . 704.76 |==============================================================


Timed PHP Compilation 5.2.9
Time To Compile
Seconds < Lower Is Better
-O0 .... 14.22 |===========================
-O1 .... 22.10 |==========================================
-O2 .... 29.85 |=========================================================
-O3 .... 32.71 |===============================================================
-Os .... 24.83 |================================================
-Ofast . 32.91 |===============================================================


C-Ray 1.1
Total Time
Seconds < Lower Is Better
-O0 .... 76.23 |===============================================================
-O1 .... 53.78 |============================================
-O2 .... 46.57 |======================================
-O3 .... 36.38 |==============================
-Os .... 72.89 |============================================================
-Ofast . 35.84 |==============================


Smallpt 1.0
Global Illumination Renderer; 100 Samples
Seconds < Lower Is Better
-O0 .... 116 |=================================================================
-O1 .... 36  |====================
-O2 .... 36  |====================
-O3 .... 32  |==================
-Os .... 51  |=============================
-Ofast . 30  |=================


Open FMM Nero2D 2.0.2
Total Time
Seconds < Lower Is Better
-O0 .... 4513.59 |=============================================================
-O1 .... 612.65  |========
-O2 .... 529.95  |=======
-O3 .... 521.83  |=======
-Os .... 1065.63 |==============
-Ofast . 509.70  |=======


PostgreSQL pgbench 8.4.11
TPC-B Transactions Per Second
TPS > Higher Is Better
-O0 . 1596.13 |===================================================
-O1 . 1920.03 |=============================================================
-O2 . 2004.75 |================================================================
-O3 . 1989.01 |===============================================================
-Os . 1831.30 |==========================================================