目录

页面内容在加载过程中，卡死无响应

问题现象

应用页面在加载内容的过程中，长时间无响应。

背景知识

问题定位

  1. 从日志中看到，故障是APP_INPUT_BLOCK，上报的原因是：User input does not respond!用户输入事件没有响应。查看主线程的任务从10:46:31到Fault time:10:46:37都没执行完，没有反馈，导致超时。且当前执行的任务为vSyncTask，可能是组件渲染太复杂。
    EVENTNAME = APP_INPUT_BLOCK
PID = 38709
PACKAGE_NAME = com.hx.example
MSG = Fault time:2025/07/03-10:46:37
User input does not respond!
mainHandler dump is:
 EventHandler dump begin curTime: 2025-07-03 10:46:38.178
 Event runner (Thread name = , Thread ID = 11839) is running
 Current Running: start at 2025-07-03 10:46:31.327, Event { send thread = 11839, send time = 2025-07-03 10:46:31.327, handle time = 2025-07-03 10:46:31.327, trigger time = 2025-07-03 10:46:31.327, task name = vSyncTask, caller = [event_queue.cpp(HandleFileDescriptorEvent:280)] }
  2. 观察到堆栈中有ListItem字段，很可能是长列表的加载耗时过长，排查堆栈中调用的应用函数，检查是否存在长列表情况。
    Tid:11839, Name:com.hx.example
#00 pc 00000000009c34d8 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::GetAncestorNodeOfFrame(bool) const+284)(2ce844c3afc83b8cbb8a679c99508b7c)
#01 pc 0000000000dad750 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::WaterFlowItemNode::RequestParentDirty()+52)(2ce844c3afc83b8cbb8a679c99508b7c)
#02 pc 000000000187ef00 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::MarkDirtyNode(bool, bool, unsigned int)+416)(2ce844c3afc83b8cbb8a679c99508b7c)
#03 pc 0000000000d3bcc4 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::RequestParentDirty()+1100)(2ce844c3afc83b8cbb8a679c99508b7c)
#04 pc 000000000187ef00 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::MarkDirtyNode(bool, bool, unsigned int)+416)(2ce844c3afc83b8cbb8a679c99508b7c)
#05 pc 0000000000d3bcc4 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::RequestParentDirty()+1100)(2ce844c3afc83b8cbb8a679c99508b7c)
#06 pc 000000000187ef00 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::MarkDirtyNode(bool, bool, unsigned int)+416)(2ce844c3afc83b8cbb8a679c99508b7c)
#07 pc 0000000000d3bcc4 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::RequestParentDirty()+1100)(2ce844c3afc83b8cbb8a679c99508b7c)
#08 pc 000000000187ef00 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::FrameNode::MarkDirtyNode(bool, bool, unsigned int)+416)(2ce844c3afc83b8cbb8a679c99508b7c)
#09 pc 0000000000bd5dc8 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::NG::ListItemPattern::SetEndNode(OHOS::Ace::RefPtr<OHOS::Ace::NG::UINode> const&)+456)(2ce844c3afc83b8cbb8a679c99508b7c)
#10 pc 0000000000bd5288 /system/lib64/platformsdk/libace_compatible.z.so(2ce844c3afc83b8cbb8a679c99508b7c)
#11 pc 0000000000c76f38 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::Framework::JSListItem::ParseSwiperAction(OHOS::Ace::Framework::JsiRef<OHOS::Ace::Framework::JsiObject> const&, OHOS::Ace::Framework::JsiExecutionContext const&)+2784)(2ce844c3afc83b8cbb8a679c99508b7c)
#12 pc 0000000000c76414 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::Framework::JSListItem::SetSwiperAction(OHOS::Ace::Framework::JsiCallbackInfo const&)+164)(2ce844c3afc83b8cbb8a679c99508b7c)
#13 pc 0000000000de7880 /system/lib64/platformsdk/libace_compatible.z.so(OHOS::Ace::Framework::JsiClass<OHOS::Ace::Framework::JSListItem>::JSStaticMethodCallback(panda::JsiRuntimeCallInfo*)+196)(2ce844c3afc83b8cbb8a679c99508b7c)
#14 pc 0000000000589de8 /system/lib64/platformsdk/libark_jsruntime.so(panda::Callback::RegisterCallback(panda::ecmascript::EcmaRuntimeCallInfo*)+272)(0d69a79f2a5bf79a69fb024e1aa5e02f)
#15 pc 0000000000445a2c /system/lib64/module/arkcompiler/stub.an(RTStub_PushCallArgsAndDispatchNative+40)
#16 at itemCreation2 (entry|entry|1.0.0|src/main/ets/pages/Index.ts:1814:1)
#17 at itemCreation (entry|entry|1.0.0|src/main/ets/pages/Index.ts:1806:1)
#18 at deepRenderFunction (entry|entry|1.0.0|src/main/ets/pages/Index.ts:1822:1)

分析结论

应用组件太复杂，渲染时间过长，vSyncTask任务超时，导致页面卡死。

修改建议

控制页面渲染的逻辑，考虑大量组件、频繁刷新等场景，简化布局、异步处理，避免组件渲染时间过长，参考文档界面渲染性能优化。

还可以通过@kit.ArkUI.inspector(布局回调)接口获取绘制完成回调的通知，计算组件渲染耗时，参考如何获取组件渲染完成时间。