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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I upgraded from DPDK 17.11 to DPDK 22.11. Also introduced the Intel E810 NIC to the mix.<o:p></o:p></p>
<p class="MsoNormal">VM host is running Oracle 9 with kernel 5.14.0-162 in VMWARE 7.03 and PCI Passthrough.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Was able to detect the E810-XXV NIC ethernet port with DPDK API (rte_eth_dev_count_avail()), however I see problems when do mmap in our application after the DPDK initialization.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[root@vstreamOR9-160 bin]# /opt/dpdk/dpdk_nic_bind.py --status<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Network devices using DPDK-compatible driver<o:p></o:p></p>
<p class="MsoNormal">============================================<o:p></o:p></p>
<p class="MsoNormal">0000:0b:00.0 'Ethernet Controller E810-XXV for SFP 159b' drv=igb_uio unused=ice<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Network devices using kernel driver<o:p></o:p></p>
<p class="MsoNormal">===================================<o:p></o:p></p>
<p class="MsoNormal">0000:03:00.0 'VMXNET3 Ethernet Controller 07b0' if=eth0 drv=vmxnet3 unused=igb_uio *Active*<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Found errors when application is started with gdb:<o:p></o:p></b></p>
<p class="MsoNormal">EAL: Detected CPU lcores: 16<o:p></o:p></p>
<p class="MsoNormal">EAL: Detected NUMA nodes: 1<o:p></o:p></p>
<p class="MsoNormal">EAL: Detected static linkage of DPDK<o:p></o:p></p>
<p class="MsoNormal">[New Thread 0x7f60c8cb0640 (LWP 3872)]<o:p></o:p></p>
<p class="MsoNormal">EAL: Multi-process socket /var/run/dpdk/rte/mp_socket<o:p></o:p></p>
<p class="MsoNormal">[New Thread 0x7f60c84af640 (LWP 3873)]<o:p></o:p></p>
<p class="MsoNormal">EAL: Selected IOVA mode 'PA'<o:p></o:p></p>
<p class="MsoNormal"><b>EAL: rte_mem_virt2phy(): cannot open /proc/self/pagemap: Too many open files<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: rte_mem_virt2phy(): cannot open /proc/self/pagemap: Too many open files<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: rte_mem_virt2phy(): cannot open /proc/self/pagemap: Too many open files<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: rte_mem_virt2phy(): cannot open /proc/self/pagemap: Too many open files<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: rte_mem_virt2phy(): cannot open /proc/self/pagemap: Too many open files<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: eal_memalloc_alloc_seg_bulk(): couldn't find suitable memseg_list<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: FATAL: Cannot init memory<o:p></o:p></b></p>
<p class="MsoNormal"><b>EAL: Cannot init memory<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This may be a hint why mmap fails.<o:p></o:p></p>
<p class="MsoNormal">Tried the following:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">increase the VM memory from 16 GB to 32 GB,
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">increase the amount of hugepages from 2GB to 4GB,<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">ulimit -n shows open files = 1024, had to increase to 2048 to eliminate the rte_mem_virt2phy() errors above when start app with gdb.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">free shows 62579808 free and available<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">htop shows our application VIRT is 66 GB, what a surprise to see this value so high. With DPDK 17.11 this value is around 5.5 GB.<o:p></o:p></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Was able to get our application to process packets from E810 once I changed the VM total memory to 80GB.<o:p></o:p></p>
<p class="MsoNormal">In HTOP the Mem value shows 5.28G/78.5G and VIRT is 69.0 GB.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When the main application executes rte_eal_init() is when the VIRT memory jumps to 66 GB, this is before the application configures the DPDK resources (worker rings, port configuration, etc).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a setting in meson to reduce the DPDK resource in our application?<o:p></o:p></p>
<p class="MsoNormal">Is telemetry memory consuming?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any help will be appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Ed<o:p></o:p></p>
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