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Diffstat (limited to 'docs/requirements/vswitchperf_ltp.rst')
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diff --git a/docs/requirements/vswitchperf_ltp.rst b/docs/requirements/vswitchperf_ltp.rst index e4e31261..c6692d9a 100644 --- a/docs/requirements/vswitchperf_ltp.rst +++ b/docs/requirements/vswitchperf_ltp.rst @@ -1241,6 +1241,48 @@ platform should be configured for every test after this (# of vCPUs, vNICs, Memory, affinitization…) is how it should be configured for every test that uses a VNF after this. +**Methodology to benchmark the VNF to vSwitch to VNF deployment scenario** + +vsperf has identified the following concerns when benchmarking the VNF to +vSwitch to VNF deployment scenario: + +* The accuracy of the timing synchronization between VNFs/VMs. +* The clock accuracy of a VNF/VM if they were to be used as traffic generators. +* VNF traffic generator/receiver may be using resources of the system under + test, causing at least three forms of workload to increase as the traffic + load increases (generation, switching, receiving). + +The recommendation from vsperf is that tests for this sceanario must +include an external HW traffic generator to act as the tester/traffic transmitter +and receiver. The perscribed methodology to benchmark this deployment scanrio with +an external tester involves the following three steps: + +#. Determine the forwarding capability and latency through the virtual interface +connected to the VNF/VM. + +.. Figure:: vm2vm_virtual_interface_benchmark.png + + Virtual interfaces performance benchmark + +#. Determine the forwarding capability and latency through the VNF/hypervisor. + +.. Figure:: vm2vm_hypervisor_benchmark.png + + Hypervisor performance benchmark + +#. Determine the forwarding capability and latency for the VNF to vSwitch to VNF + taking the information from the previous two steps into account. + +.. Figure:: vm2vm_benchmark.png + + VNF to vSwitch to VNF performance benchmark + +vsperf also identified an alternative configuration for the final step: + +.. Figure:: vm2vm_alternative_benchmark.png + + VNF to vSwitch to VNF alternative performance benchmark + .. 3.3.2: Environment/infrastructure |