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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I have exhausted all my options and want to reach out to the dpdk developers for guidance.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My situation is as follows:<o:p></o:p></p>
<p class="MsoNormal">We were on DPDK 17.11.6 and upgraded to DPDK22.11.2 to support the Intel E810. Also upgraded from CentOS7 to Oracle 91.<o:p></o:p></p>
<p class="MsoNormal">In DPDK 22.11.2 the VIRT memory has skyrocketed and causes major issues with our application that runs on 16 GB of memory (virtual appliances and low end remote appliances).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have also tried DPDK 23.11 and 24.03 and I also see across the DPDK versions that the VIRT memory has increase by a factor of 5 over DPDK 17.11<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Our application process shows VIRT memory is 7.6 GB with DPDK 17.11.6,
<o:p></o:p></p>
<p class="MsoNormal">and with DPDK 22.11.2, 23.11.2 and 24.03 the VIRT memory is ~36.6GB<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Our application minimum configuration needs to run with 16 GB memory when DPDK is enabled. Our application uses memory locking and rlimit settings to get optimal performance.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I understand that DPDK memory design has changed since DPDK 18.xx.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We don’t use hot-plug feature, encryption, security, telemetry, ipsec, or graph.<o:p></o:p></p>
<p class="MsoNormal">Currently we configure 2x1G hugepages and single socket.<o:p></o:p></p>
<p class="MsoNormal">I have tried to disable telemetry, cryptodev, etc in meson and only to find they can not be disabled, they are mandatory.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">rte_eal_init() has argument “--legacy-mem”, which brought down the VIRT memory to 36.6GB, but not enough.<o:p></o:p></p>
<p class="MsoNormal">Is there a developer guide to attack this problem in very low risk and timely fashion?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal">Ed<o:p></o:p></p>
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