Mark Wadham m4rkw

m4rkw / gist:4d355ba1f69ca32e77b0897c2f0ce21f

Created March 6, 2026 19:36

	Root Cause Analysis: OIDC Listener TCP Accept Delays

	The Smoking Gun: Processor Thread Starvation via Synchronous HTTP

	There is a clear, plausible code-level explanation for why only the OIDC listener experiences TCP accept delays while the Kerberos listener on the same broker is
	unaffected. The issue is a cascading backpressure chain caused by synchronous HTTP calls during SASL/OAUTHBEARER authentication.

	The Chain of Events

	Here's the exact code path that causes the problem:

m4rkw / gist:cf4c2ade3d4b22f7b2f7e9e96c915e08

Created January 10, 2026 09:36

	#!/bin/bash

	# Read JSON input from stdin
	input=$(cat)

	# Extract working directory
	workdir=$(echo "$input" \| jq -r '.workspace.current_dir')

	# Extract context window data
	usage=$(echo "$input" \| jq '.context_window.current_usage')

m4rkw / gist:6c9b65dcd4914e1aa03188d2b5d5c5b8

Created June 21, 2024 20:29

	#!/usr/bin/env python

	import os
	import sys
	import datetime
	import math
	import json

	config = json.loads(open('/usr/syno/etc/ssl/ssl.info/server.info').read())

m4rkw / gist:1631818e4f16c5c4698267a45d25daee

Created October 11, 2016 09:10

	x ~/osm2pgsql/build(master) $ cmake ..
	-- Building osm2pgsql 0.91.0-dev
	-- Boost version: 1.59.0
	-- Found the following Boost libraries:
	-- system
	-- filesystem
	CMake Error at /opt/local/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
	Could NOT find PostgreSQL (missing: PostgreSQL_INCLUDE_DIR
	PostgreSQL_TYPE_INCLUDE_DIR)
	Call Stack (most recent call first):

m4rkw / gist:fd06bd16c584632cf943

Created September 9, 2015 15:53