The $2M Millisecond Linux Defaults That Cost You Money
Deep dive into vm.swappiness, THP compaction, and C-states. Kernel internals, measurements, and the design philosophy behind low-latency Linux tuning.
We don't guess. We measure. Deep-dive investigations into high-frequency trading, MEV infrastructure, and institutional DeFi.
In the zero-sum arena of Maximal Extractable Value (MEV) and high-frequency crypto trading, infrastructure latency is the primary determinant of alpha. This report analyzes the physics of latency in distributed systems and details the architecture of Pulusu—a proprietary signing stack leveraging AWS Nitro Enclaves and kernel-bypass networking to achieve <45µs execution times.
In the zero-sum arena of Maximal Extractable Value (MEV) extraction, infrastructure reliability is often conflated with uptime. A robust system survives a chain reorganization; an antifragile system capitalizes on the resulting dislocation to capture alpha while competitors recover.
Pre-flight checks for production Linux systems.
Low-overhead production profiling.
Achieved deterministic <50µs RTT on `c6i.metal` using DPDK/AF_XDP.
New observability metric for MEV builders: time from submission to inclusion.
Nitro Enclave-based bundle signing to prevent insider key extraction.
Benchmarking Xilinx Alveo u50 for UDP parsing vs. C++ software.
Structured engineering curriculums. Multi-part investigations into complex systems.
Deep dive into vm.swappiness, THP compaction, and C-states. Kernel internals, measurements, and the design philosophy behind low-latency Linux tuning.
A deep dive into why cloud providers' latency claims are misleading, and the exact kernel bypass techniques we used to achieve deterministic sub-50µs RTT on c6i.metal instances.
Why NTP is fundamentally broken for HFT compliance, and how we implemented IEEE 1588 PTPv2 with hardware timestamping to achieve sub-100ns accuracy on Solarflare NICs.
Why the standard 'isolcpus' kernel parameter doesn't fully isolate your critical threads, and the combination of settings required for true deterministic scheduling.
How Transparent Huge Pages cause unpredictable latency spikes, and the explicit HugePage reservation strategy that eliminates memory stalls.
How the Linux network stack adds 50µs of latency, and the interrupt coalescing, busy polling, and AF_XDP techniques that eliminate it.
Deep dive into I/O schedulers, Direct I/O, io_uring, and AWS EBS optimization. Block layer internals for predictable storage latency.
Architecture decisions that determine your latency ceiling. AWS, Kubernetes, monitoring, and security patterns for crypto trading systems.
Deep dive into StatefulSets vs Deployments, pod identity, PersistentVolumes, and graceful shutdown patterns for trading infrastructure.
Fill latency, position drift, market data staleness. The SLOs that prevent losses, not just track uptime. Prometheus, Grafana, and alerting patterns.
Deep dive into eBPF, bpftrace, and kernel tracing. How to measure latency at nanosecond precision without the observer effect.
Deep dive into WebSocket reliability, sequence gap detection, Kubernetes patterns, and monitoring for multi-exchange market data systems.
How we reduced tick-to-trade latency from 12µs to 2.8µs at a top HFT desk. FPGA feed handlers, kernel bypass, and the $50M/year cost of 1 microsecond.
The RTT badge on this site measures real latency. Here's how, using the Performance API, Vercel edge, and the same principles that apply to trading.
How we replaced air-gapped cold storage with a policy-driven MPC signing pipeline, achieving 15-minute deployment cycles while exceeding hardware security guarantees.
Reference architecture for a high-performance crypto exchange on AWS, covering the Matching Engine (LMAX pattern), Market Data Ingest, and MPC Custody integration.
Zero Trust networking with Teleport, supply chain security with Sigstore, and real-time risk engines with Chainalysis. How to secure an exchange from the inside out.
The security architecture that protects $500M+ TVL protocols. Enclave signing, rate limiters, circuit breakers, and the incident response playbook.
A first-principles breakdown of why infrastructure latency, simulation failure rates, and observability gaps cost block builders 40% of their margin-and how to fix it.
Applying Nassim Taleb's antifragility to blockchain execution infrastructure. Why reorgs are profit opportunities, multi-builder hedging is arbitrage, and chaos engineering is a competitive advantage.
Why the biggest threat to MEV infrastructure is not external hackers-it's rogue employees, compromised builders, and your own logs. Enclave signing, OPA firewalls, and compliance logging without alpha leakage.
Why your Geth node is 200ms behind the network, and the exact tuning required to achieve state freshness for MEV. The physics of io_uring, NVMe namespaces, and P2P topology.