I run a docker container in my server, and then I run qemu in this container. Firstly, I don't open the option enable-kvm in qemu, and the fio runtime option works. I set runtime=30 and the fio test last at most 30s. But when I open the option enable-kvm, the fio option runtime=30 doesn't work. The fio process runs just a few seconds and then finished.
note that I don't use fio option size, so I think it should run 30s to finished.
How to fix this problem? Or if there other methods to make fio running 30s before it finish?
I just change the runtime option to runtime=30s and it doesn't work either.
the full command I use is
fio --filename=/dev/nullb0 --iodepth=64 --ioengine=psync --direct=1 --rw=randread --bs=$1k --numjobs=$2 --runtime=30s --group_reporting --name=test-rand-read --output=test_c_randwrite.log
My docker image is ubuntu22, and the qemu's kernel is Rust for Linux
My qemu command is
qemu-system-x86_64 \
-nographic --enable-kvm\
-smp 4 -m 4096 \
-kernel arch/x86_64/boot/bzImage \
-append "console=ttyS0 root=/dev/sda rootfstype=ext4 rw" \
-hda /data/bupt-rtos/x86_ramdisk/ubuntu-rootfs.img \
-nic tap,id=net0,ifname=tap0,script=no,downscript=no\
-object "filter-dump,id=net0,netdev=net0,file=dump.dat"
If you need more information, please tell me.
