This document will guide you through the process of building a Debian Linux based system that can be used to execute benchmarks on both KVM and Zircon guests. The approach outlined here will create a USB flash drive that is bootable on x86-64 EFI based systems.
Insert the USB drive into your host machine and run the following:
sudo apt install debootstrap gdisk cd $ZIRCON_DIR ./system/uapp/guest/scripts/build-bootable-usb-multiboot.sh # Follow the instructions presented.
Note: If you experience apt failures during the bootstrap process check if your firewall is blocking traffic.
This will setup an EFI system partition with GRUB configured to either boot Zircon or Linux. The Linux image includes sufficient packages and scripts to boot itself as a KVM guest.
Boot off the flash drive and select “Zircon” from the GRUB menu.
The appropriate block device corresponding to the USB flash drive must be determined. We're looking for a removable device (RE flags) with 3 partitions (EFI, Root, Home).
$ lsblk ID SIZE TYPE LABEL FLAGS DEVICE 000 14G RE /dev/sys/pci/... 001 200M efi system EFI System Partition RE /dev/sys/pci/... 002 5G unknown Root RE /dev/sys/pci/... 003 2G unknown Home RE /dev/sys/pci/...
In the example above, the correct device is 000. Using that block device we can create a guest:
$ guest -b /dev/class/block/000 -c "root=/dev/vda2 ro console=ttyS0" /boot/data/bzImage
Upon a successful boot you should see a login prompt with default login credentials provided.
Boot off the flash drive and select “Debian” from the GRUB menu and login with the credentials displayed on the login screen. Use the included script to create a QEMU/KVM guest:
sudo /opt/run-qemu.sh
Once booted login to the guest using the credentials on the login screen.
First we need to mount the RW home partition that holds the benchmarks and we can write our results to. The device name is slightly different on KVM and Zircon guests:
# Zircon Guests: sudo mount -o rw /dev/vda3 /home # QEMU/KVM Guests: sudo mount -o rw /dev/vdb /home
cd /home/bench/byte-unixbench-master/UnixBench ./Run