diff options
Diffstat (limited to 'docs/report/introduction/methodology_kvm_vms_vhost_user.rst')
| -rw-r--r-- | docs/report/introduction/methodology_kvm_vms_vhost_user.rst | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/docs/report/introduction/methodology_kvm_vms_vhost_user.rst b/docs/report/introduction/methodology_kvm_vms_vhost_user.rst index 79f1134881..e6a98596da 100644 --- a/docs/report/introduction/methodology_kvm_vms_vhost_user.rst +++ b/docs/report/introduction/methodology_kvm_vms_vhost_user.rst @@ -9,25 +9,7 @@ to the QEMU binary can be adjusted in `Constants.py`. FD.io CSIT performance lab is testing VPP vhost-user with KVM VMs using following environment settings: -- Tests with varying QEMU virtio queue (a.k.a. vring) sizes: [vr1024] - 1024 descriptors to optimize for packet throughput. -- Tests with varying Linux :abbr:`CFS (Completely Fair Scheduler)` - settings: i) [cfs] default settings, ii) [cfsrr1] CFS RoundRobin(1) - policy applied to all data plane threads handling test packet path - including all VPP worker threads and all QEMU testpmd poll-mode - threads. -- Resulting test cases are all combinations with [vr1024] and - [cfs,cfsrr1] settings. -- Adjusted Linux kernel :abbr:`CFS (Completely Fair Scheduler)` - scheduler policy for data plane threads used in CSIT is documented in - `CSIT Performance Environment Tuning wiki - <https://wiki.fd.io/view/CSIT/csit-perf-env-tuning-ubuntu1604>`_. - -Testing with different CFS settings enables verifying the impact of -making VPP and VM data plane threads less susceptible to other Linux OS -system tasks hijacking CPU cores running those data plane threads. - -CSIT supports two types of VMs: +CSIT supports two types of VMs: - **Image-VM**: used for all functional, VPP_device, and regular performance tests except NFV density tests. @@ -83,10 +65,10 @@ Example of custom init script for the kernel-VM: mount -t hugetlbfs -o "rw,relatime,pagesize=2M" hugetlbfs /dev/hugepages echo 0000:00:06.0 > /sys/bus/pci/devices/0000:00:06.0/driver/unbind echo 0000:00:07.0 > /sys/bus/pci/devices/0000:00:07.0/driver/unbind - echo uio_pci_generic > /sys/bus/pci/devices/0000:00:06.0/driver_override - echo uio_pci_generic > /sys/bus/pci/devices/0000:00:07.0/driver_override - echo 0000:00:06.0 > /sys/bus/pci/drivers/uio_pci_generic/bind - echo 0000:00:07.0 > /sys/bus/pci/drivers/uio_pci_generic/bind + echo vfio-pci > /sys/bus/pci/devices/0000:00:06.0/driver_override + echo vfio-pci > /sys/bus/pci/devices/0000:00:07.0/driver_override + echo 0000:00:06.0 > /sys/bus/pci/drivers/vfio-pci/bind + echo 0000:00:07.0 > /sys/bus/pci/drivers/vfio-pci/bind $vnf_bin poweroff -f |