Hi, Does vmxnet3 PMD support LSC=1(i.e with interrupt mode) for link changes ?
When i enable LSC=1 the functionality works fine, but, when pumping traffic i'm seeing increasing in CPU load on some cores which is running "eal-intr-thread" epoll_wait() function for more CPU-time. Actually, interrupt should come only when Link changes, but, we are seeing interrupt for each incoming Rx-packet and also a lot of spurious interrupts. ============= ~ # cat /proc/interrupts |grep igb 58: 1254293 0 0 0 PCI-MSI 1572864-edge igb_uio 59: 1278105 0 0 0 PCI-MSI 5767168-edge igb_uio ~ # cat /proc/irq/58/spurious count 98035 unhandled 0 last_unhandled 0 ms ~ # ============== Does anyone tried LSC=1 in vmxnet3 PMD based apps and faced similar issues ? If so, please let me know. Tried with DPDK-18.11, DPDK-19.11 and DPDK-20.05. Thanks, Madhukar.
