docker-userland-proxy-off.sh: 输出优化前后内存对比（基线+净释放，含 used 口径下降提示与 available 参考）

docker-userland-proxy-off.sh

@@ -69,7 +69,12 @@ if [ "$CFG_VAL" = "false" ]; then
 fi
 echo -e "${YELLOW}[状态] 当前 daemon.json 未配置 userland-proxy: false（值: ${CFG_VAL}）${NC}"
 
-# --- 3. 备份现有 daemon.json ---
+# --- 3. 记录优化前内存基线 ---
+MEM_BEFORE_USED=$(free -m | awk '/^Mem:/{print $3}')
+MEM_BEFORE_AVAIL=$(free -m | awk '/^Mem:/{print $7}')
+echo -e "${GREEN}[基线] 优化前内存: used ${MEM_BEFORE_USED}MB / available ${MEM_BEFORE_AVAIL}MB${NC}"
+
+# --- 4. 备份现有 daemon.json ---
 mkdir -p /etc/docker
 if [ -f /etc/docker/daemon.json ]; then
     BAK="/etc/docker/daemon.json.bak-$(date +%Y%m%d%H%M%S)"
@@ -77,7 +82,7 @@ if [ -f /etc/docker/daemon.json ]; then
     echo -e "${GREEN}[备份] $BAK${NC}"
 fi
 
-# --- 4. 合并写入 userland-proxy: false（保留原有其他配置）---
+# --- 5. 合并写入 userland-proxy: false（保留原有其他配置）---
 if [ -f /etc/docker/daemon.json ]; then
     if command -v jq >/dev/null 2>&1; then
         TMP="/etc/docker/daemon.json.tmp.$$"
@@ -103,7 +108,7 @@ fi
 echo -e "${GREEN}[配置] /etc/docker/daemon.json -> userland-proxy: false${NC}"
 cat /etc/docker/daemon.json
 
-# --- 5. 重启 docker（容器会短暂中断几秒）---
+# --- 6. 重启 docker（容器会短暂中断几秒）---
 # 注: systemctl restart 在个别环境下会因时序返回非零，实际已生效；
 # 因此不在此处退出，改由下面的验证步骤给出真实结果。
 echo -e "${YELLOW}[重启] $RESTART_CMD${NC}"
@@ -117,7 +122,7 @@ for _ in $(seq 1 15); do
     sleep 2
 done
 
-# --- 6. 验证 ---
+# --- 7. 验证 ---
 PROXY_COUNT=$(pgrep -f '[d]ocker-proxy' 2>/dev/null | wc -l || true)
 if [ "$PROXY_COUNT" = "0" ]; then
     echo -e "${GREEN}[验证] docker-proxy 进程数: 0${NC}"
@@ -126,8 +131,16 @@ else
 fi
 CONF=$(docker info 2>/dev/null | awk -F': ' '/EnableUserlandProxy/{gsub(/ /,"",$2); print $2}' | head -1)
 echo -e "${GREEN}[验证] daemon.json 配置: userland-proxy: false（docker info 字段: ${CONF:-不显示=false 时正常}）${NC}"
-echo "--- 内存 ---"
-free -m | head -2
+MEM_AFTER_USED=$(free -m | awk '/^Mem:/{print $3}')
+MEM_AFTER_AVAIL=$(free -m | awk '/^Mem:/{print $7}')
+SAVED=$((MEM_BEFORE_USED - MEM_AFTER_USED))
+echo -e "${GREEN}[内存] 优化前: used ${MEM_BEFORE_USED}MB / available ${MEM_BEFORE_AVAIL}MB${NC}"
+echo -e "${GREEN}[内存] 优化后: used ${MEM_AFTER_USED}MB / available ${MEM_AFTER_AVAIL}MB${NC}"
+if [ "$SAVED" -gt 0 ]; then
+    echo -e "${GREEN}[内存] 净释放: ${SAVED}MB（used 口径；available 变化: $((MEM_AFTER_AVAIL - MEM_BEFORE_AVAIL))MB）${NC}"
+else
+    echo -e "${YELLOW}[内存] used 未下降（${SAVED}MB）: 可能受页缓存波动影响，以 available 为准（变化: $((MEM_AFTER_AVAIL - MEM_BEFORE_AVAIL))MB）${NC}"
+fi
 echo "--- 容器状态 ---"
 docker ps --format '{{.Names}}\t{{.Status}}' 2>/dev/null || true
 echo ""