Topical Takes

Short, opinionated posts on eBPF, Linux internals, and the tools we all run in production.

AlleBPF51linux51yeet48AI agents23observability16networking8claude-code7security7HTTP4production4tracing4API debugging3bcc3exectop3incident-response3kubernetes3omarchy3sandboxing3supply chain3tcpdump3troubleshooting3uprobes3audit2auditd2bpftrace2BSON2capabilities2ci2containers2databases2debugging2egress2execsnoop2hyprland2MongoDB2mysql2oom2performance2permissions2postgres2processes2quickshell2runtime-debugging2ssh2TCP2TLS2802.111agent-security1agentic network operations1ai-sre1bar-widget1benchmarks1biolatency1bpf-verifier1bubblewrap1build-performance1cgroups1Cilium1CO-RE1codex1confidential-computing1context-switches1cpu-accounting1cryptojacking1devops1DNS1exfiltration1hardening1integration-testing1kprobes1kworker1landlock1latency1local-llm1make1MCP1memory1n-plus-one1nodejs1npm1off-cpu1ollama1opentelemetry1packet-capture1plugin1postinstall1prepared statements1privilege1proc-filesystem1process-attribution1process-masquerading1proctop1profiling1query-shapes1Redis1refusal1RESP1rf1root-cause-analysis1runqlat1schedstat1seccomp1slowlog1SQLite1stratum1sudo1syscall1systemd1tcp-retransmits1terminal-bench1threat-modeling1tunnels1websocket1wifi1wireguard1wireless1wss1yeetkit1+118 more

All eBPF51 linux51 yeet48 AI agents23 observability16 networking8 claude-code7 security7 HTTP4 production4 tracing4 API debugging3 bcc3 exectop3 incident-response3 kubernetes3 omarchy3 sandboxing3 supply chain3 tcpdump3 troubleshooting3 uprobes3 audit2 auditd2 bpftrace2 BSON2 capabilities2 ci2 containers2 databases2 debugging2 egress2 execsnoop2 hyprland2 MongoDB2 mysql2 oom2 performance2 permissions2 postgres2 processes2 quickshell2 runtime-debugging2 ssh2 TCP2 TLS2 802.111 agent-security1 agentic network operations1 ai-sre1 bar-widget1 benchmarks1 biolatency1 bpf-verifier1 bubblewrap1 build-performance1 cgroups1 Cilium1 CO-RE1 codex1 confidential-computing1 context-switches1 cpu-accounting1 cryptojacking1 devops1 DNS1 exfiltration1 hardening1 integration-testing1 kprobes1 kworker1 landlock1 latency1 local-llm1 make1 MCP1 memory1 n-plus-one1 nodejs1 npm1 off-cpu1 ollama1 opentelemetry1 packet-capture1 plugin1 postinstall1 prepared statements1 privilege1 proc-filesystem1 process-attribution1 process-masquerading1 proctop1 profiling1 query-shapes1 Redis1 refusal1 RESP1 rf1 root-cause-analysis1 runqlat1 schedstat1 seccomp1 slowlog1 SQLite1 stratum1 sudo1 syscall1 systemd1 tcp-retransmits1 terminal-bench1 threat-modeling1 tunnels1 websocket1 wifi1 wireguard1 wireless1 wss1 yeetkit1

August 31, 2026

How to Find Slow MongoDB Queries on Linux in 2026: The Slow Query Is Often Two Hundred Fast Ones

A slow-query log grades one query at a time, so an endpoint that issues two hundred fast queries produces an empty profiler and a 900ms response. Covers query shapes and N+1 detection, the profiler's 100ms threshold, Atlas Query Profiler, explain, mongotail, and reading the commands at the socket with mongosnoop and yeet.

MongoDBeBPFlinuxobservabilityn-plus-onequery-shapesBSONyeet

August 31, 2026

Writing an eBPF Protocol Tracer on Linux in 2026: Why the Verifier Wants Your Parser in Userspace

The verifier rejects a parsing loop because it cannot bound a trip count read from user memory, and that is design feedback rather than an obstacle. Compares bpftrace, BCC, libbpf and yeet, then covers back-edge errors, the 512-byte stack limit, per-CPU scratch maps, request/reply correlation and CO-RE field renames across kernels.

eBPFbpf-verifierCO-REkprobesBSONlinuxtracingyeet