【iOS开发】一个简单、易用、强大的 iOS APP 冷启动耗时分析工具
AMKLaunchTimeProfiler
—— 简单、易用、强大的 iOS APP 冷启动耗时分析工具
注：以下内容，可查阅 GitHub 中 AMKLaunchTimeProfiler 的 Readme.md 以获取及时更新，和更好的阅读体验~~
1、Features
- 零成本使用： 通过 CocoaPods 一行代码接入，即可实现 APP 冷启动耗时统计，包括
pre-main、main、首屏渲染三个阶段的耗时，及总耗时 - 可视化查看： 内置日志查看页面，并自动高亮高耗时方法，各种信息一目了然
- 源数据导出： 可以方便的通过邮件、AirDrop 等方式 导出全部数据，具体包括
- 日志列表的文本数据，方便在电脑上查看
- 日志的JSON数据，方便基于日志的执行时间、调用方法、执行耗时 等信息 做自定义分析
- 多次有效数据的平均数 数据
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| ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| 可视化查看 | 操作选项 | 源数据导出 | 通过邮件导出 | 通过其他方式导出 |
2、Installation
AMKLaunchTimeProfiler 可通过CocoaPods完成引入，仅需现在工程的Podfile文件中 添加如下代码
pod 'AMKLaunchTimeProfiler'
然后在终端在Podfile文件所在路径下执行 pod install命令即可完成源码下载与引入。
详见：http://github.com/AndyM129/AMKLaunchTimeProfiler
3、Usage
3.1、查看相关日志
内置日志查看页面，并自动高亮高耗时方法，各种信息一目了然，具体可通过如下方式打开：
3.1.1、使用手势
通过 AMKLaunchTimeProfiler.debugEnable = YES; 启用调试模式（默认不启用），即可在 任意界面，通过「双指从右向左轻扫」的手势打开
3.1.2、使用编码
通过 [AMKLaunchTimeProfilerLogsViewController.new presentingWithAnimated:YES completion:nil]; 使用代码打开
每一次启动，都会新创建 并保存一个 AMKLaunchTimeProfiler 实例，相关日志也都会存在该实例中，并实时持久化到本地，举例如下：
```
AMKLaunchTimeProfiler id: 5c39904610203e20d26a22969df37bf9 AMKLaunchTimeProfiler version: 1.0.0 Bundle id: io.github.andym129.amk-launch-time-profiler Bundle short Version: 1.0 Bundle version: 1.0 Client Version: (null) Device Version: iPhone 11 Pro Max with iOS 15.5 Device Name: Andy's iPhone 11 Pro Max
process-start time: 2022-06-22 16:13:00
total time consuming: 2.121 s
pre-main time consuming: 1.716 s (80.88%)
main time consuming: 0.345 s (16.24%)
first screen time consuming: 0.061 s (2.87%)
⏱ +1.716 s ~Δ 1716 ms >> INTERNAL: process-start time: 2022-06-22 16:13:00 ⏱ +1.716 s ~Δ 0 ms >> INTERNAL: main time: 2022-06-22 16:13:02 ⏱ +2.023 s ~Δ 308 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke Line 18: 开始... ⏱ +2.026 s ~Δ 2 ms >> -[AMKRootViewController viewDidLoad]_block_invoke Line 40: 开始... ⏱ +2.044 s ~Δ 18 ms >> -[AMKRootViewController viewDidLoad]_block_invoke_2 Line 45: 结束 ⏱ +2.060 s ~Δ 16 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 25: hello ⏱ +2.060 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 26: world ⏱ +2.060 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke_4 Line 36: 结束 ⏱ +2.061 s ~Δ 1 ms >> INTERNAL: did finish launching time: 2022-06-22 16:13:02 ⏱ +2.063 s ~Δ 3 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke Line 38: 开始... ⏱ +2.064 s ~Δ 1 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke_2 Line 42: 结束 ⏱ +2.121 s ~Δ 57 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke Line 51: 开始... ⏱ +2.121 s ~Δ 0 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke_2 Line 52: 结束 ⏱ +2.121 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke Line 54: 开始... ⏱ +2.121 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke_2 Line 55: 结束 ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: first screen time: 2022-06-22 16:13:02 ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: total time consuming: 2.121 s ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: pre-main time consuming: 1.716 s (80.88%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: main time consuming: 0.345 s (16.24%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: first screen time consuming: 0.061 s (2.87%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +11.081 s ~Δ 8960 ms >> -[AMKViewController viewDidLoad]_block_invoke Line 38: 开始... ⏱ +11.082 s ~Δ 0 ms >> -[AMKViewController viewDidLoad]_block_invoke_2 Line 41: 结束 ⏱ +11.099 s ~Δ 17 ms >> -[AMKViewController viewDidAppear:]_block_invoke Line 50: 开始... ⏱ +11.099 s ~Δ 0 ms >> -[AMKViewController viewDidAppear:]_block_invoke_2 Line 51: 结束 ```
3.2、导出日志
在日志查看页面，点击右上角的“···”，点击发送，即可选择“邮件”或“其他”方式导出，具体包括：
3.2.1、log 文件
```
AMKLaunchTimeProfiler id: 77949e4c840246c4ddedce31d8b9b54e AMKLaunchTimeProfiler version: 1.0.0 Bundle id: io.github.andym129.amk-launch-time-profiler Bundle short Version: 1.0 Bundle version: 1.0 Client Version: (null) Device Version: iPhone 11 Pro Max with iOS 15.5 Device Name: Andy's iPhone 11 Pro Max
process-start time: 2022-06-22 16:04:53
total time consuming: 3.081 s
pre-main time consuming: 2.575 s (83.59%)
main time consuming: 0.000 s (0.00%)
first screen time consuming: 0.000 s (0.00%)
⏱ +2.575 s ~Δ 2575 ms >> INTERNAL: process-start time: 2022-06-22 16:04:53 ⏱ +2.576 s ~Δ 0 ms >> INTERNAL: main time: 2022-06-22 16:04:56 ⏱ +3.081 s ~Δ 506 ms >> INTERNAL: first screen time: 2022-06-22 16:04:56 ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: total time consuming: 3.081 s ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: pre-main time consuming: 2.575 s (83.59%) ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: main time consuming: 0.000 s (0.00%) ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: first screen time consuming: 0.000 s (0.00%) ⏱ +3.081 s ~Δ 0 ms >> INTERNAL: ----------------------------------------------------------------------
====================================================================== AMKLaunchTimeProfiler id: 5c39904610203e20d26a22969df37bf9 AMKLaunchTimeProfiler version: 1.0.0 Bundle id: io.github.andym129.amk-launch-time-profiler Bundle short Version: 1.0 Bundle version: 1.0 Client Version: (null) Device Version: iPhone 11 Pro Max with iOS 15.5 Device Name: Andy's iPhone 11 Pro Max
process-start time: 2022-06-22 16:13:00
total time consuming: 2.121 s
pre-main time consuming: 1.716 s (80.88%)
main time consuming: 0.345 s (16.24%)
first screen time consuming: 0.061 s (2.87%)
⏱ +1.716 s ~Δ 1716 ms >> INTERNAL: process-start time: 2022-06-22 16:13:00 ⏱ +1.716 s ~Δ 0 ms >> INTERNAL: main time: 2022-06-22 16:13:02 ⏱ +2.023 s ~Δ 308 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke Line 18: 开始... ⏱ +2.026 s ~Δ 2 ms >> -[AMKRootViewController viewDidLoad]_block_invoke Line 40: 开始... ⏱ +2.044 s ~Δ 18 ms >> -[AMKRootViewController viewDidLoad]_block_invoke_2 Line 45: 结束 ⏱ +2.060 s ~Δ 16 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 25: hello ⏱ +2.060 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 26: world ⏱ +2.060 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke_4 Line 36: 结束 ⏱ +2.061 s ~Δ 1 ms >> INTERNAL: did finish launching time: 2022-06-22 16:13:02 ⏱ +2.063 s ~Δ 3 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke Line 38: 开始... ⏱ +2.064 s ~Δ 1 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke_2 Line 42: 结束 ⏱ +2.121 s ~Δ 57 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke Line 51: 开始... ⏱ +2.121 s ~Δ 0 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke_2 Line 52: 结束 ⏱ +2.121 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke Line 54: 开始... ⏱ +2.121 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke_2 Line 55: 结束 ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: first screen time: 2022-06-22 16:13:02 ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: total time consuming: 2.121 s ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: pre-main time consuming: 1.716 s (80.88%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: main time consuming: 0.345 s (16.24%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: first screen time consuming: 0.061 s (2.87%) ⏱ +2.121 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +11.081 s ~Δ 8960 ms >> -[AMKViewController viewDidLoad]_block_invoke Line 38: 开始... ⏱ +11.082 s ~Δ 0 ms >> -[AMKViewController viewDidLoad]_block_invoke_2 Line 41: 结束 ⏱ +11.099 s ~Δ 17 ms >> -[AMKViewController viewDidAppear:]_block_invoke Line 50: 开始... ⏱ +11.099 s ~Δ 0 ms >> -[AMKViewController viewDidAppear:]_block_invoke_2 Line 51: 结束
====================================================================== AMKLaunchTimeProfiler id: 554b38e7f43a36526d5b74484930d2ad AMKLaunchTimeProfiler version: 1.0.0 Bundle id: io.github.andym129.amk-launch-time-profiler Bundle short Version: 1.0 Bundle version: 1.0 Client Version: (null) Device Version: iPhone 11 Pro Max with iOS 15.5 Device Name: Andy's iPhone 11 Pro Max
process-start time: 2022-06-22 16:26:05
total time consuming: 2.896 s
pre-main time consuming: 2.263 s (78.14%)
main time consuming: 0.563 s (19.43%)
first screen time consuming: 0.070 s (2.43%)
⏱ +2.263 s ~Δ 2263 ms >> INTERNAL: process-start time: 2022-06-22 16:26:05 ⏱ +2.263 s ~Δ 0 ms >> INTERNAL: main time: 2022-06-22 16:26:07 ⏱ +2.791 s ~Δ 529 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke Line 18: 开始... ⏱ +2.795 s ~Δ 4 ms >> -[AMKRootViewController viewDidLoad]_block_invoke Line 40: 开始... ⏱ +2.812 s ~Δ 17 ms >> -[AMKRootViewController viewDidLoad]_block_invoke_2 Line 45: 结束 ⏱ +2.825 s ~Δ 13 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 25: hello ⏱ +2.825 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:] Line 26: world ⏱ +2.825 s ~Δ 0 ms >> -[AMKAppDelegate application:didFinishLaunchingWithOptions:]_block_invoke_4 Line 43: 结束 ⏱ +2.825 s ~Δ 1 ms >> INTERNAL: did finish launching time: 2022-06-22 16:26:08 ⏱ +2.829 s ~Δ 3 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke Line 37: 开始... ⏱ +2.829 s ~Δ 1 ms >> -[AMKHomeViewController viewDidLoad]_block_invoke_2 Line 41: 结束 ⏱ +2.896 s ~Δ 66 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke Line 50: 开始... ⏱ +2.896 s ~Δ 0 ms >> -[AMKHomeViewController viewDidAppear:]_block_invoke_2 Line 51: 结束 ⏱ +2.896 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke Line 54: 开始... ⏱ +2.896 s ~Δ 0 ms >> -[AMKRootViewController viewDidAppear:]_block_invoke_2 Line 55: 结束 ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: first screen time: 2022-06-22 16:26:08 ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: total time consuming: 2.896 s ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: pre-main time consuming: 2.263 s (78.14%) ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: main time consuming: 0.563 s (19.43%) ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: first screen time consuming: 0.070 s (2.43%) ⏱ +2.896 s ~Δ 0 ms >> INTERNAL: ---------------------------------------------------------------------- ```
3.2.2、txt文件
``` 2 次有效数据的平均数：
total time consuming: 2.508 s
pre-main time consuming: 1.989 s (79.30%)
main time consuming: 0.454 s (18.08%)
first screen time consuming: 0.066 s (2.61%) ```
3.2.3、json文件
json
// 如下内容，已做精简
[
{
"mainTimeConsuming" : 0,
"bundleId" : "io.github.andym129.amk-launch-time-profiler",
"didFinishLaunchingTime" : 0,
"identifier" : "77949e4c840246c4ddedce31d8b9b54e",
"mainTime" : 1655885096.369308,
"preMainTimeConsuming" : 2.5754809379577637,
"deviceVersion" : "iPhone 11 Pro Max with iOS 15.5",
"processStartTime" : 1655885093.7938271,
"totalTimeConsuming" : 3.0812058448791504,
"deviceName" : "Andy's iPhone 11 Pro Max",
"logs" : [
{
"timeDelta" : 2.5753798484802246,
"function" : "__INTERNAL__",
"line" : 0,
"timeInterval" : 2.5753798484802246,
"string" : "process-start time: 2022-06-22 16:04:53"
},
...
],
"bundleName" : "AMKLaunchTimeProfiler_Example",
"version" : "1.0.0",
"firstScreenTimeConsuming" : 0,
"bundleVersion" : "1.0",
"firstScreenTime" : 1655885096.8750329,
"bundleShortVersion" : "1.0"
},
{
"mainTimeConsuming" : 0.3446040153503418,
"bundleId" : "io.github.andym129.amk-launch-time-profiler",
"didFinishLaunchingTime" : 1655885582.4769759,
"identifier" : "5c39904610203e20d26a22969df37bf9",
"mainTime" : 1655885582.1323719,
"preMainTimeConsuming" : 1.7158448696136475,
"deviceVersion" : "iPhone 11 Pro Max with iOS 15.5",
"processStartTime" : 1655885580.416527,
"totalTimeConsuming" : 2.1213448047637939,
"deviceName" : "Andy's iPhone 11 Pro Max",
"logs" : [
{
"timeDelta" : 1.7157728672027588,
"function" : "__INTERNAL__",
"line" : 0,
"timeInterval" : 1.7157728672027588,
"string" : "process-start time: 2022-06-22 16:13:00"
},
...
],
"bundleName" : "AMKLaunchTimeProfiler_Example",
"version" : "1.0.0",
"firstScreenTimeConsuming" : 0.060895919799804688,
"bundleVersion" : "1.0",
"firstScreenTime" : 1655885582.5378718,
"bundleShortVersion" : "1.0"
},
{
"mainTimeConsuming" : 0.56263923645019531,
"bundleId" : "io.github.andym129.amk-launch-time-profiler",
"didFinishLaunchingTime" : 1655886368.1614871,
"identifier" : "554b38e7f43a36526d5b74484930d2ad",
"mainTime" : 1655886367.5988479,
"preMainTimeConsuming" : 2.2627308368682861,
"deviceVersion" : "iPhone 11 Pro Max with iOS 15.5",
"processStartTime" : 1655886365.336117,
"totalTimeConsuming" : 2.8956289291381836,
"deviceName" : "Andy's iPhone 11 Pro Max",
"logs" : [
{
"timeDelta" : 2.2626559734344482,
"function" : "__INTERNAL__",
"line" : 0,
"timeInterval" : 2.2626559734344482,
"string" : "process-start time: 2022-06-22 16:26:05"
},
...
],
"bundleName" : "AMKLaunchTimeProfiler_Example",
"version" : "1.0.0",
"firstScreenTimeConsuming" : 0.070258855819702148,
"bundleVersion" : "1.0",
"firstScreenTime" : 1655886368.231746,
"bundleShortVersion" : "1.0"
}
]
3.3、自定义日志
对于耗时较高的方法，可以通过补充自定义日志的方式，辅助找出具体的耗时的操作，进而通过优化 实现提速冷启动，相关方法如下：
```objective-c /// 打印日志
define AMKLaunchTimeProfilerLog(FORMAT, ...);
/// 打印日志 - @"开始..."
define AMKLaunchTimeProfilerLogBegin(FORMAT, ...);
/// 打印日志 - @"结束"
define AMKLaunchTimeProfilerLogEnd(FORMAT, ...);
/// 打印日志 - 内部日志
define AMKLaunchTimeProfilerInternalLog(FORMAT, ...);
/// 打印日志 - 相同位置 只打一次
define AMKLaunchTimeProfilerOnceLog(FORMAT, ...);
/// 打印日志 - 相同位置 只打一次 - @"开始..."
define AMKLaunchTimeProfilerOnceLogBegin(FORMAT, ...);
/// 打印日志 - 相同位置 只打一次 - @"结束"
define AMKLaunchTimeProfilerOnceLogEnd(FORMAT, ...);
/// 完全自定义的日志 - (void)logWithFunction:(const char _Nullable)function line:(NSInteger)line string:(NSString _Nullable)format, ...;
```
4、Author
- 邮箱：[email protected]
- 掘金：http://juejin.cn/user/2875978147966855
5、License
AMKLaunchTimeProfiler is available under the MIT license. See the LICENSE file for more info.
注：以上内容，可查阅 原文 以获取及时更新，和更好的阅读体验~~