October 26, 2019

VM Performance on Local Disks

I have two ssd drives in my Xiaomi Mi Air 2017. One is attached over pcie v.3 with 4 lanes and delivers 3300MB/s read and 1400MB/s write. The other is attached with std sata interface delivering about 560MB/s read and 460MB/s write. Here I want to measure the performance impact of the location of the virtual disk on a freshly installed windows 10 in a virtual box. For this benchmark I am using CrystalDiskMark 6.

Sata Disk

DiskMark: 494MB/s read, 491MB/s write

Pcie Disk

DiskMark: 1497MB/s read, 1234MB/s write