🐛 Bug Report — SIGABORTs on macOS (JS heap OOM)

[aroman]

About once a day I get a sigabort in one of the workerd instances we use to run our product. It's very frustrating. Happy to help debug.

EDIT: seems like the issue here might be related to many concurrent requests overwhelming workerd... that seems like its not good regardles.

npx wrangler pages dev --do ROOM_DURABLE_OBJECT=RoomDurableObject@gg-local-gameserver --compatibility-date=2023-09-22 --port=8173 --proxy=6333 --log-level=warn

✦ ❯  uname -a
Darwin mcbook.local 24.2.0 Darwin Kernel Version 24.2.0: Fri Dec  6 19:01:59 PST 2024; root:xnu-11215.61.5~2/RELEASE_ARM64_T6000 arm64

✦ ❯ npm run wrangler --version
10.2.3

✘ [ERROR] <--- Last few GCs --->


  [99708:0x3a0040000] 11440470 ms: Mark-Compact 1392.6 (1422.9) -> 1390.2
  (1423.4) MB, pooled: 6 MB, 163.75 / 0.00 ms  (average mu = 0.890, current mu
  = 0.724) allocation failure; scavenge might not succeed
  [99708:0x3a0040000] 11440671 ms: Mark-Compact 1391.1 (1424.3) -> 1391.1
  (1424.3) MB, pooled: 6 MB, 200.42 / 0.00 ms  (average mu = 0.779, current mu
  = 0.003) allocation failure; scavenge might not succeed


  <--- JS stacktrace --->

  workerd/jsg/setup.c++:38: fatal: V8 fatal error; location = Reached heap
  limit; message = : allocation failed: JavaScript heap out of memory


✘ [ERROR] *** Received signal #6: Abort trap: 6

  stack: