FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

[21:26:59] #1 RSS:193.6MB Ctx:0%   → Read geminiChat.ts (1500 行)
[21:27:46] #2 RSS:270.4MB Ctx:4.2% → Read agent.ts
[21:28:32] #3 RSS:397.5MB Ctx:4.3% → grep + Read 3 个文件
[21:29:18] #4 RSS:452.7MB Ctx:5.7% → Read slashCommandProcessor.ts
[21:30:04] #5 RSS:515.0MB Ctx:5.9% → Read chatCompressionService.ts
[21:30:50] #6 RSS:649.1MB Ctx:4.0% ← TOKEN COMPACTION 触发 (5.9%→4.0%)
                                       RSS 反增 134MB (structuredClone 峰值)
[21:31:36] #7 RSS:666.7MB Ctx:3.2% ← 再次 compaction, RSS 继续涨
[21:32:22] CRASH — FATAL ERROR: Ineffective mark-compacts near heap limit

Mark-Compact 2042.9 (2081.9) -> 2042.9 (2081.1) MB
Mark-Compact 2048.9 (2087.2) -> 2048.9 (2087.2) MB
FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
...
node::worker::(anonymous namespace)::StructuredClone

Mark-Compact 4082.5 (4126.8) -> 4082.5 (4126.3) MB
Mark-Compact 4095.1 (4139.0) -> 4095.1 (4139.0) MB
FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
...
node::worker::(anonymous namespace)::StructuredClone

[41381:0x130008000] 342468 ms: Mark-Compact 508.6 (526.7) -> 507.0 (526.9) MB,
  pooled: 1 MB, 86.42 / 0.00 ms  (average mu = 0.175, current mu = 0.150)
  task; scavenge might not succeed

[41381:0x130008000] 342568 ms: Mark-Compact 509.1 (526.9) -> 507.1 (528.2) MB,
  pooled: 0 MB, 93.79 / 0.12 ms  (average mu = 0.121, current mu = 0.068)
  allocation failure; scavenge might not succeed

FATAL ERROR: Ineffective mark-compacts near heap limit
Allocation failed - JavaScript heap out of memory

┌─────────────────────────────────────────────────────────┐
│ Layer 3: V8 Heap Limit (512MB/2GB/4GB)                  │ ← 用户最终撞到这里
├─────────────────────────────────────────────────────────┤
│ Layer 2: structuredClone() 峰值放大 (瞬时 ~2x)         │ ← 直接诱因
├─────────────────────────────────────────────────────────┤
│ Layer 1: History 中 tool result 累积 (线性增长)         │ ← 基础增长
├─────────────────────────────────────────────────────────┤
│ Layer 0: Token compaction 触发时机                      │ ← 控制点
└─────────────────────────────────────────────────────────┘

sendMessage()
  → tryCompress()
    → heapPressureRatio < threshold (safety net disabled)
    → ChatCompressionService.compress()
      → chat.getHistory(true)
        → structuredClone(this._history)   ← 峰值分配！
          → V8 需要额外 ~N MB 来容纳 clone
          → 如果 existing heap + N > limit → OOM

13:29:43 [WARN]  Heap pressure at 74.9%; attempting auto-compaction before token threshold.
13:30:06 [DEBUG] [FILE_READ_CACHE] clear after auto tryCompress    ← compaction #1 执行成功
13:30:13 [WARN]  Heap pressure at 70.7%; attempting auto-compaction before token threshold.
                 ← 刚压完 heap 从 74.9% 仅降到 70.7%，仍超阈值，立即再次尝试
13:30:52 [DEBUG] Heap pressure at 86.0%; skipping heap-pressure auto-compaction during cooldown.
                 ← 30s cooldown 期间拒绝执行
13:30:56 [WARN]  Heap pressure at 85.3%; attempting auto-compaction before token threshold.
                 ← cooldown 过期，heap 已升至 85.3%
13:31:21 [DEBUG] [FILE_READ_CACHE] clear after auto tryCompress    ← compaction #2 执行成功
13:31:37 [WARN]  Heap pressure at 88.8%; attempting auto-compaction before token threshold.
                 ← 压完后 heap 反弹至 88.8%
13:32:09 [DEBUG] Heap pressure at 90.2%; skipping heap-pressure auto-compaction during cooldown.
                 ← heap 已达 90.2%，cooldown 中无法执行
13:32:10 ← 日志终止（进程 OOM crash）

heap 占比高 (>70%)
  → 触发 heap-pressure auto-compaction
    → tryCompress() 内部调用 getHistory(true)
      → structuredClone(this._history)  ← 瞬时 heap 峰值 +30~40%
        → compaction 成功，释放旧 history
          → 但 clone 峰值已经把 heap 推高到更危险的水位
            → 下一轮 send 继续累积
              → heap 占比更高 → 更频繁触发 → crash

L367: const requestContents = this.getHistory(true);          ← send 构造 request
L618: const recoveryContents = self.getHistory(true);         ← MAX_TOKENS escalation (极少触发)

L467: ChatCompressionService.compress() 内部调用              ← #3735: 每次 send 前的 auto-compact
L574: requestContents = this.getHistory(true);                ← send 构造 request
L724: reactive tryCompress() 内部调用                         ← #3879: context overflow 后 retry
L739: requestContents = self.getHistory(true);                ← #3879: retry 构造新 request
L943: const recoveryContents = self.getHistory(true);         ← MAX_TOKENS escalation

sendMessage()
  → tryCompress()              ← #3735: getHistory(true) [clone #1]
  → getHistory(true)           ← 构造 request [clone #2]
  → API 返回 context overflow
    → reactive tryCompress()   ← #3879: getHistory(true) [clone #3]
    → getHistory(true)         ← retry request [clone #4]

#!/bin/bash
# /tmp/oom-simple-driver.sh <tmux-session-name>
SESSION="$1"

TASKS=(
  "用 Read 工具完整读取 packages/core/src/core/geminiChat.ts"
  "用 Read 工具完整读取 packages/core/src/tools/agent/agent.ts"
  "用 grep -rn structuredClone packages/core/src 然后 Read 前 3 个文件"
  "用 Read 完整读取 packages/cli/src/ui/hooks/slashCommandProcessor.ts"
  "用 Read 完整读取 packages/core/src/services/chatCompressionService.ts"
  "用 find packages/cli/src/ui/commands -name '*.ts' 然后逐一 Read"
  "用 Read 完整读取 packages/core/src/core/turn.ts"
  # ... 更多任务
)

i=0
while true; do
  TASK="${TASKS[$((i % ${#TASKS[@]}))]}"
  i=$((i + 1))

  QWEN_PID=$(ps aux | grep "dist/index.js" | grep -v grep | awk '{print $2}' | sort -rn | head -1)
  RSS=$(ps -o rss= -p $QWEN_PID 2>/dev/null)
  [ -z "$RSS" ] && { echo "CRASH after $((i-1)) tasks!"; exit 0; }

  RSS_MB=$(echo "scale=1; $RSS/1024" | bc)
  CTX=$(tmux capture-pane -t "$SESSION:1" -p 2>/dev/null | grep -oE "[0-9]+\.[0-9]+% 已用" | tail -1)
  echo "[$(date +%H:%M:%S)] #$i RSS:${RSS_MB}MB Ctx:$CTX | ${TASK:0:55}"

  tmux send-keys -t "$SESSION:1" C-u
  sleep 0.2
  tmux send-keys -t "$SESSION:1" "$TASK" Enter
  sleep 0.5
  tmux send-keys -t "$SESSION:1" Enter
  sleep 45
done

# 1. 禁用 heap-pressure safety net
# geminiChat.ts: HEAP_PRESSURE_COMPRESSION_RATIO = 99.0

# 2. Build
npm run build --workspace=packages/core && npm run build --workspace=packages/cli

# 3. 启动 qwen (128K context model, 512MB heap)
SESSION="oom-test"
tmux new-session -d -s "$SESSION" -c "$REPO_DIR"
tmux send-keys -t "$SESSION" \
  "NODE_OPTIONS='--max-old-space-size=512' node packages/cli/dist/index.js --model 'qwen3.6-plus'" Enter

# 4. 等待启动后运行驱动
sleep 10
bash /tmp/oom-simple-driver.sh "$SESSION"