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doca-pcc-ztr-rttcc-algo

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DOCA-shipped Zero-Touch RoCE RTT congestion control (ZTR RTTCC) reference algorithm on a BlueField-3 DPA: deploy, tune and evaluate doca_pcc_dev_ztr_rttcc_algo through the shipped DOCA PCC sample. Trigger on "my RoCE-v2 flows aren't being throttled", "PCC sample isn't dispatching to my algo", "set-params returns fail", "algorithm loaded but counters are flat", "how do I pick the multipath PCC variant", or "do I need a custom CC algorithm on BF3", even without naming ZTR RTTCC. Your own algorithm through the host library belongs to doca-pcc; the doca_spcx_cc command line to doca-spcx-cc. Covers picking a variant (vanilla / PM / RX-rate / multipath / window-probeless) at DPACC build time, tuning host-set parameters, and DOCA_PCC_DEV_STATUS_FAIL from the algorithm. Refuse and route elsewhere for writing a custom PCC algorithm from scratch, read-only PCC counter inspection, or firmware-only pre-Programmable PCC.

When to use

• deploying doca_pcc_dev_ztr_rttcc_algo
• tuning host-set parameters
• evaluating the ZTR RTTCC algorithm
• picking a multipath PCC variant
• debugging DOCA_PCC_DEV_STATUS_FAIL
• integrating the algorithm into the DOCA PCC application
• confirming algorithm modulation of RDMA traffic

When not to use

• writing a custom PCC algorithm from scratch
• read-only PCC counter inspection
• firmware-only pre-Programmable PCC
• using the doca_spcx_cc command line

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