<div dir="ltr">DPDK provides but does not define (that I can see at least) these TXQ config fields. What are these fields what do they do? <a href="https://doc.dpdk.org/api/structrte__eth__thresh.html">https://doc.dpdk.org/api/structrte__eth__thresh.html</a> uint8_t pthresh uint8_t hthresh uint8_t wthresh And here: What is the RS bit? <a href="https://doc.dpdk.org/api/structrte__eth__txconf.html">https://doc.dpdk.org/api/structrte__eth__txconf.html</a> uint16_t tx_rs_thresh. And some what unrelated: What is a ``doorbell"? this is something I continue to run into esp. in Mellanox NIC papers? Doorbell counts are reported for AWS NICs at least with xstats api: <pre style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:11.9px;margin-top:0px;margin-bottom:16px;padding:16px;overflow:auto;line-height:1.45;border-radius:6px;color:rgb(36,41,47)"><code style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;padding:0px;margin:0px;background:transparent;border-radius:6px;word-break:normal;border:0px;display:inline;overflow:visible;line-height:inherit">tx_q0_doorbells: 18812 tx_q1_doorbells: 18861</code></pre> </div>