open sourcing my AF_XDP receiver for doublezero edge! supercharge your trading backend by shaving off microseconds of latency. measurements from my prev run. link below 👇

doublezero edge now works with XDP ingestion in rust using aya! so you now can ingest information via doublezero edge even faster by bypassing kernel through AF-XDP. it shaves off microseconds of latency which is critical in HFT.

made a v2 of the xdp redirect program. the main improvements are: 1. controlled steering: only configured IPv4 UDP traffic is redirected to configured xdp sockets 2. optional dst IP filtering 3. optional GRE unwrapping. 4. packet fragmentation checks everything else stays on the normal kernel path with XDP_PASS. here's a demo with modified shredstream proxy

a sneak & peep on how my jito shredstream xdp monitor looks like atm, vibe coded in bash. this screenshot was captured while the proxy was live and actively forwarding traffic, with actual counters. its displaying shreds received from the jito block engine in new york & forwards to a sink, bypassing the entire kernel networking stack. - single queue rx and tx - skb & drv mode the goal is to: - benchmark latency, cpu utilization of XDP based packet processing pipeline. - demonstrate a full xdp based shred forwarding pipeline that is not only reliable for more traffic but also handles packet bursts gracefully.

xdpdump is a very handy tool for diagnostics. below is my jito-shredstream fork redirecting shreds from the block engine in a fully kernel bypass pipeline. h/t @seminuked

i automated my nic monitoring for XDP with a skill that i plug into codex/claude. not all NICs/drivers are the same but this covers most of the general settings & metrics. it monitors: - bpf program attachment - NIC queue IRQs to CPU core affinity - free CPU cores - kernel tracing - fdir rule application - perf recording and report

Just got casually mentioned by @alessandrod today on his talk on agave performance and networking at Breakpoint. This is why I wake up and Solana. full talk: xitter.cf/solana_devs/status/199…

💥 The AF_XDP receive path in Agave has been ACHIEVED, both zero-copy and copy modes SUCCESSFULLY TESTED end-to-end! 💥 A first step toward ultra-low-latency packet reception on @solana h/t @alessandrod for all the help 🤝 Zero-copy mode in IKVM console, more details 🧵:

🚨 Just wrote my own XDP redirect program in Rust (Aya). 🚨 Packets → NIC → AF_XDP → userland rings. ft. kernel trace logs Works in both copy and zerocopy modes.

Introducing an open source pinocchio-powered, modified asset-agnostic Solana orderbook. - integrate with any program - create/cancel orders, order feedback via OrderSummary - stream matches via an event queue, - custom callback data. This orderbook was first introduced by @bonfida in Breakpoint 2021 cc. @0x_febo @jacobvcreech