DPDK Interfaces Configuration [Документация VAS Experts]
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    en:dpi:dpi_components:platform:dpi_config [2025/07/22 15:11] – elena.krasnobryzhen:dpi:dpi_components:platform:dpi_config [2025/12/08 12:10] (current) – [dpdk_engine=6: RSS dispatchers per bridge] elena.krasnobryzh
    Line 359: Line 359:
      
     ==== dpdk_engine=6: RSS dispatchers per bridge ==== ==== dpdk_engine=6: RSS dispatchers per bridge ====
    -<note important>This ''dpdk_engine'' is available since version 14.0!</note> +<note important>This ''dpdk_engine'' is available starting from version 14.0!</note> 
    -A separate dispatcher thread is created for each port (device). +This engine is intended for configurations with multiple bridges (dev1:dev2:dev3:...) for 100G+ cards. 
    -Designed for configurations with multiple input and output devices:+
     <code> <code>
     in_dev=41-00.0:02-00.0:c3-00.0:c1-00.0:04-00.0:04-00.1 in_dev=41-00.0:02-00.0:c3-00.0:c1-00.0:04-00.0:04-00.1
    Line 377: Line 377:
     mem_http_parsers=512000 mem_http_parsers=512000
     </code> </code>
    -In this example, six dispatcher threads are created — one per device. Obviously, if there is only one bridge, this engine is equivalent to ''dpdk_engine=1'' — one dispatcher per direction.+This example creates 24 dispatcher threads — 4 dispatchers per bridge. 
     + 
     +<note tip> 
     +Total number of dispatchers = ''dpdk_rss'' * number of bridges.\\ 
     +For 100G+ NICs, with a ratio of 1 dispatcher per 10G, the minimum number of dispatchers is 10.\\ 
     +Starting from version 14.0, the maximum number of dispatchers is 32. 
     +</note>
      
    -<note tip>Total number of required CPU cores equals the number of processing threads plus the number of ports</note> 
      
    -This engine is designed for configurations with many bridges (dev1:dev2:dev3:...) for 100G+ NICs, replacing the cluster approach. +On-stick devices are supported.\\ 
    -On-stick devices are supported. +SSG configures the cards as follows: 
    -SKAT configures NICs as follows: +  * RX queue count = ''dpdk_rss'' 
    -  * RX queue count = dpdk_rss +  * TX queue count = number of processing threads. Processing threads write directly to their own TX queue on the card.
    -  * TX queue count = number of processing threads. Processing threads write directly to their own TX queue of the NIC.+