Encryption Overhead
Disk IO with Full Disk Encryption


Stock: 

	Processor: Intel Core i7-3632QM @ 2.20GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 4096MB, Disk: 32GB VMware Virtual S, Graphics: VMware SVGA II, Audio: Ensoniq ES1371 / Creative, Network: Intel 82545EM Gigabit

	OS: Ubuntu 16.04, Kernel: 4.4.0-45-generic (x86_64), Desktop: Unity 7.4.0, Display Server: X Server 1.18.3, Display Driver: vmware 13.1.0, OpenGL: 2.1 Mesa 11.2.0 Gallium 0.4, Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 1366x768, System Layer: VMware

Full Disk Encryption: 

	Processor: Intel Core i7-3632QM @ 2.20GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 4096MB, Disk: 21GB VMware Virtual S, Graphics: VMware SVGA II, Audio: Ensoniq ES1371 / Creative, Network: Intel 82545EM Gigabit

	OS: Ubuntu 16.04, Kernel: 4.4.0-31-generic (x86_64), Desktop: Unity 7.4.0, Display Server: X Server 1.18.3, Display Driver: vmware 13.1.0, Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 1366x768, System Layer: VMware

Home Directory Encryption: 

	Processor: Intel Core i7-3632QM @ 2.20GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 4096MB, Disk: 21GB VMware Virtual S, Graphics: VMware SVGA II, Audio: Ensoniq ES1371 / Creative, Network: Intel 82545EM Gigabit

	OS: Ubuntu 16.04, Kernel: 4.4.0-31-generic (x86_64), Desktop: Unity 7.4.0, Display Server: X Server 1.18.3, Display Driver: vmware 13.1.0, OpenGL: 2.1 Mesa 11.2.0 Gallium 0.4, Compiler: GCC 5.4.0 20160609, File-System: ext4 (ecryptfs), Screen Resolution: 1366x768, System Layer: VMware


IOzone 3.405
Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
Stock ..................... 5164.48 |==========================================
Full Disk Encryption ...... 5072.18 |=========================================
Home Directory Encryption . 64.56   |=


IOzone 3.405
Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
Stock ..................... 64.13 |============================================
Full Disk Encryption ...... 44.24 |==============================
Home Directory Encryption . 58.21 |========================================