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Diffstat (limited to 'resources/libraries/robot/performance/performance_limits.robot')
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diff --git a/resources/libraries/robot/performance/performance_limits.robot b/resources/libraries/robot/performance/performance_limits.robot new file mode 100644 index 0000000000..759ee5c28f --- /dev/null +++ b/resources/libraries/robot/performance/performance_limits.robot @@ -0,0 +1,117 @@ +# Copyright (c) 2019 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +*** Settings *** +| Documentation | Performance suite keywords - Handling NIC and TG limits. +| Library | Collections +| Variables | ${CURDIR}/../../python/Constants.py + +*** Keywords *** +| Get Average Frame Size +| | [Documentation] +| | ... | Framesize can be either integer in case of a single packet +| | ... | in stream, or set of packets in case of IMIX type or simmilar. +| | ... +| | ... | *Arguments:* +| | ... | - frame_size - Framesize. Type: integer or string +| | ... +| | ... | *Returns:* +| | ... | Average frame size. Type: float +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Get Average Frame Size \| IMIX_v4_1 \| +| | ... +| | [Arguments] | ${frame_size} +| | ... +| | Return From Keyword If | '${frame_size}' == 'IMIX_v4_1' | ${353.83333} +| | ${frame_size} = | Convert To Number | ${frame_size} +| | Return From Keyword | ${frame_size} + +| Set Max Rate And Jumbo +| | [Documentation] +| | ... | Input framesize can be either integer in case of a single packet +| | ... | in stream, or IMIX string defining mix of packets. +| | ... | For jumbo frames detection, the maximal packet size is relevant. +| | ... | For maximal transmit rate, the average packet size is relevant. +| | ... | In both cases, encapsulation overhead (if any) has effect. +| | ... | The maximal rate is computed from NIC name. +| | ... | The implementation works by mapping from exact +| | ... | whitelisted NIC names. +| | ... | The mapping is hardcoded in nic_limits.yaml +| | ... | TODO: Make the mapping from NIC names case insensistive. +| | ... +| | ... | TODO: Make pps limit also definable per NIC. +| | ... +| | ... | This keyword computes maximal unidirectional transmit rate +| | ... | and jumbo boolean (some suites need that for configuration decisions). +| | ... | To streamline suite autogeneration, both input and output values +| | ... | are communicated as test (or broader scope) variables, +| | ... | instead of explicit arguments and return values. +| | ... +| | ... | *Test (or broader scope) variables read:* +| | ... | - nic_name - Name of bottleneck NIC. Type: string +| | ... | - overhead - Overhead in bytes. Default: 0. Type: integer +| | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str +| | ... +| | ... | *Test variables set:* +| | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. +| | ... | Type: float +| | ... | - jumbo - Jumbo boolean, true if jumbo packet support +| | ... | has to be enabled. Type: boolean +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Set test Variable \| \${frame_size} \| IMIX_v4_1 \| +| | ... | \| Set Max Rate And Jumbo \| +| | ... +| | ${pps_limit} = | Set Variable | ${18750000.0} +| | ${bps_limit} = | Get From Dictionary | ${NIC_NAME_TO_LIMIT} | ${nic_name} +| | ${avg_size} = | Get Average Frame Size | ${frame_size} +| | ${max_size} = | Set Variable If | '${frame_size}' == 'IMIX_v4_1' +| | ... | ${1518} | ${frame_size} +| | # swo := size_with_overhead +| | ${avg_swo} = | Evaluate | ${avg_size} + ${overhead} +| | ${max_swo} = | Evaluate | ${max_size} + ${overhead} +| | ${jumbo} = | Set Variable If | ${max_swo} < 1522 +| | ... | ${False} | ${True} +| | ${rate} = | Evaluate | ${bps_limit} / ((${avg_swo} + 20.0) * 8) +| | ${max_rate} = | Set Variable If | ${rate} > ${pps_limit} +| | ... | ${pps_limit} | ${rate} +| | Set Test Variable | \${jumbo} +| | Set Test Variable | \${max_rate} + +| Set Max Rate And Jumbo And Handle Multi Seg +| | [Documentation] +| | ... | This keyword starts with Get Max Rate And Jumbo keyword, +| | ... | then adds correct multi seg VPP configuration. +| | ... +| | ... | See Documentation of Set Max Rate And Jumbo for more details. +| | ... +| | ... | *Test (or broader scope) variables read:* +| | ... | - nic_name - Name of bottleneck NIC. Type: string +| | ... | - overhead - Overhead in bytes. Default: 0. Type: integer +| | ... | - frame_size - L2 Frame Size [B] or IMIX string. Type: int or str +| | ... +| | ... | *Test variables set:* +| | ... | - max_rate - Calculated unidirectional maximal transmit rate [pps]. +| | ... | Type: float +| | ... | - jumbo - Jumbo boolean, true if jumbo packet support +| | ... | has to be enabled. Type: boolean +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Set Max Rate And Jumbo And Handle Multi Seg \| +| | ... +| | Set Max Rate And Jumbo +| | Run Keyword If | not ${jumbo} | Add no multi seg to all DUTs |