Prewarm wasm workers before accepting requests

2026-07-16 21:00:46 +00:00
parent 83c05111a9
commit ee2177f4b4
4 changed files with 23 additions and 0 deletions
@@ -137,6 +137,11 @@ own import vector, memory/table-base globals, GOT globals and function-table
 slots, then runs relocations, constructors, and request-pointer binding. This
 removes repeated Wasmtime import-type traversal without sharing request state or
 changing core-first, unit-load-order symbol resolution.
+Each FastCGI child initializes its process-local Wasmtime engine after fork and
+before entering the accept loop. This preserves Wasmtime's fork boundary while
+preventing the first request assigned to each worker from paying engine startup.
+Startup duration or failure is written to the service log.
+
 `request_perf()` reports worker module-cache hits and misses and divides a miss
 into artifact lookup, wasm read, custom-section parse, serialized-module
 deserialization or wasm compilation, and immutable import classification. This