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tests: Use hugepages for test_vfio

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Using hugepages with VFIO and virtiofs can improve the performance of
the test_vfio test.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
(cherry picked from commit 5c9828a34c)
This commit is contained in:
Rob Bradford
2020-02-13 14:32:24 +00:00
parent 27c1b40c83
commit 548ef43ca2
3 changed files with 9 additions and 3 deletions
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6
test_data/cloud-init/clear/openstack/latest/user_data
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@@ -63,5 +63,7 @@ write_files:
bash -c "echo 1af4 1041 > /sys/bus/pci/drivers/vfio-pci/new_id"
bash -c "echo 0000:00:06.0 > /sys/bus/pci/devices/0000\:00\:06.0/driver/unbind"
bash -c "echo 1af4 1041 > /sys/bus/pci/drivers/vfio-pci/new_id"
/mnt/cloud-hypervisor --kernel /mnt/vmlinux --cmdline "console=hvc0 reboot=k panic=1 nomodules i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd root=/dev/vda2 VFIOTAG" --disk path=/mnt/clear-31310-cloudguest.img path=/mnt/cloudinit.img --cpus boot=1 --memory size=512M --device path=/sys/bus/pci/devices/0000:00:05.0/ path=/sys/bus/pci/devices/0000:00:06.0/
# 512M ram requires 256 pages
echo 256 | sudo tee /proc/sys/vm/nr_hugepages
sudo chmod a+rwX /dev/hugepages
/mnt/cloud-hypervisor --kernel /mnt/vmlinux --cmdline "console=hvc0 reboot=k panic=1 nomodules i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd root=/dev/vda2 VFIOTAG" --disk path=/mnt/clear-31310-cloudguest.img path=/mnt/cloudinit.img --cpus boot=1 --memory size=512M,file=/dev/hugepages --device path=/sys/bus/pci/devices/0000:00:05.0/ path=/sys/bus/pci/devices/0000:00:06.0/