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Data Center Benchmarking Drafts

Data Center Benchmarking Drafts. draft-dcbench-def- 00 draft-bmwg-dcbench-methodology- 01. Lucien Avramov, Cisco Jacob Rapp, HP. July 2013 IETF 90 - Berlin. Data Center Benchmarking Drafts Overview. Redefine Definitions draft-dcbench-def- 00. Redefine Methodology

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Data Center Benchmarking Drafts

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  1. Data Center Benchmarking Drafts draft-dcbench-def-00 draft-bmwg-dcbench-methodology-01 Lucien Avramov, Cisco Jacob Rapp, HP July 2013 IETF 90- Berlin IETF 87 – Berlin – BMWG

  2. Data Center Benchmarking Drafts Overview Redefine Definitions draft-dcbench-def-00 Redefine Methodology draft-bmwg-dcbench-methodology-01 • Line Rate Testing • Test all ports at 99.98% including latency, jitter histogram for min/max/avg and drops • Buffering Testing • Buffer highest efficiency • Maximum port buffer size • Maximum port pair buffer size • Maximum DUT buffer size • Microburst • MicroBurst Testing • Use all ports, at 100% intensity of microburst • Head of Line Blocking Testing • Measure two groups (8 ports) of DUT, up to all ports • Reports provides percent of traffic loss during HOLB • IncastStateful and Stateless Traffic measure TCP goodput while measuring UDP latency • Latency • Redefine how latency calculations are used • Update usage of FIFO, FILO, LIFO and LILO • Jitter • Define the application Jitter RFC 3393 and packet size requirement and histogram for DC devices • Physical Layer Calibration • Cable test calibrations and documentation • Line Rate • Consequences of PPM: 99.98% • Buffering • Define Buffering and Buffer Efficiency, Burst, Intensity of Microburst • Define Incast[many-one, many-many] • Application Throughput • Goodput definition and how to measure it IETF 87 – Berlin – BMWG-Avramov

  3. 3.2.2 Measure Max Port Buffer Size This DUT has 4.29 MB of buffer per port at 1518 bytes with COS 0 Measured with Ixia IETF 87 – Berlin – BMWG-Avramov

  4. Conversation on draft-dcbench-def-00 • Received great feedback on the list and have provided answers • 1.2 Change measurement to measurement units • 2.1 change Latency to Latency interval • FILO -> First bit, Last bit • FIFO -> First bit, First bit • LILO -> Last bit, Last bit • LIFO -> Last bit, First bit • 2.3 Latency: FILO as MUST, FIFO as MAY • 3. Jitter: what we mean by this is to provide new recommendation: packets of the same size MUST be used, and histogram of latency buckets MAY be provided • 2.1 define cut-through additionally to bit forwarding [this is already in section 2.1] • Provide buffering per priority [this is done as refered to cos /dscp value] IETF 87 – Berlin – BMWG-Avramov

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