AliDBBenchMark d al: Processor: Intel Xeon E5-2682 v4 @ 2.49GHz (1 Core), Motherboard: Alibaba Cloud ECS (rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org BIOS), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM, Disk: 40GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-105-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM Flexible IO Tester 3.1 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: No - Block Size: 4KB - Disk Target: / MB/s > Higher Is Better al . 4.94 |==================================================================== Flexible IO Tester 3.1 Type: Random Write - IO Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: / MB/s > Higher Is Better al . 16.01 |=================================================================== Flexible IO Tester 3.1 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better al . 4.52 |==================================================================== Flexible IO Tester 3.1 Type: Random Write - IO Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better al . 16.33 |===================================================================