gzip Xen HVM domU 4.2.amazon testing on Ubuntu 14.04 via the Phoronix Test Suite. gzip_tests1: Processor: Intel Xeon E5-2670 v2 @ 2.50GHz (2 Cores), Motherboard: Xen HVM domU, Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 8GB, Graphics: Cirrus Logic GD 5446 OS: Ubuntu 14.04, Kernel: 3.13.0-48-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, System Layer: Xen HVM domU 4.2.amazon gzip_tests2: Processor: Intel Xeon E5-2670 v2 @ 2.50GHz (2 Cores), Motherboard: Xen HVM domU, Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 8GB, Graphics: Cirrus Logic GD 5446 OS: Ubuntu 14.04, Kernel: 3.13.0-48-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, System Layer: Xen HVM domU 4.2.amazon Gzip Compression 2GB File Compression Seconds < Lower Is Better gzip_tests1 . 16.06 |========================================================== gzip_tests2 . 16.07 |==========================================================