topic Do PQOS Include Monitor to DDIO Ways in Software Tuning, Performance Optimization & Platform Monitoring https://community.intel.com/t5/Software-Tuning-Performance/Do-PQOS-Include-Monitor-to-DDIO-Ways/m-p/1571071#M8313 <P>Hi:</P><P>&nbsp;</P><P>I was trying to monitor the LLC usage for a DPDK-Based RX application running on Core #3.</P><P>The application I run is a basic dpdk example program that receives the data from the TX side via a 100Gbps NIC.&nbsp;</P><P>&nbsp;</P><P>According to my understanding of DPDK and NIC, NIC will inject the package directly into the 2 DDIO ways(total 8MB) in the LLC(60MB). However, when I monitor the LLC usage used by the DPDK-RX program, the LLC usage will drop to way below 8MB...</P><P>&nbsp;</P><P>This should not happen because ideally NIC PCIE-Write should saturate the DDIO ways of the LLC, then even cause DMA leakage where ddio ways are full...</P><P>&nbsp;</P><P>My question is, will the LLC usage shown in the pqos application include DDIO ways?</P><P>If not, then the above behavior does have an explanation, otherwise I am not sure why the above behavior exist..</P> Fri, 09 Feb 2024 17:20:18 GMT Tianchen_Jerry_Wang 2024-02-09T17:20:18Z Do PQOS Include Monitor to DDIO Ways https://community.intel.com/t5/Software-Tuning-Performance/Do-PQOS-Include-Monitor-to-DDIO-Ways/m-p/1571071#M8313 <P>Hi:</P><P>&nbsp;</P><P>I was trying to monitor the LLC usage for a DPDK-Based RX application running on Core #3.</P><P>The application I run is a basic dpdk example program that receives the data from the TX side via a 100Gbps NIC.&nbsp;</P><P>&nbsp;</P><P>According to my understanding of DPDK and NIC, NIC will inject the package directly into the 2 DDIO ways(total 8MB) in the LLC(60MB). However, when I monitor the LLC usage used by the DPDK-RX program, the LLC usage will drop to way below 8MB...</P><P>&nbsp;</P><P>This should not happen because ideally NIC PCIE-Write should saturate the DDIO ways of the LLC, then even cause DMA leakage where ddio ways are full...</P><P>&nbsp;</P><P>My question is, will the LLC usage shown in the pqos application include DDIO ways?</P><P>If not, then the above behavior does have an explanation, otherwise I am not sure why the above behavior exist..</P> Fri, 09 Feb 2024 17:20:18 GMT https://community.intel.com/t5/Software-Tuning-Performance/Do-PQOS-Include-Monitor-to-DDIO-Ways/m-p/1571071#M8313 Tianchen_Jerry_Wang 2024-02-09T17:20:18Z