signpostsによるパフォーマンス計測

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1. signpostsʹΑΔύϑΥʔϚϯεܭଌ גࣜձࣾAbemaTV / shoheiyokoyama
2. ԣࢁ঵ฏ גࣜձࣾAbemaTV GitHub: shoheiyokoyama Twi$er: shoheiyokoyam
3. Measuring Performance Using Logging WWDC 2018 h"ps:/ /developer.apple.com/videos/play/wwdc2018/405/
4. Signposts • ύϑΥʔϚϯε΍Πϕϯτͷଌఆ͕Մೳ • OSLogΛ֦ுͨ͠API • InstrumentsͰ֬ೝՄೳ
5. Measuring Intervals import os.signpost let log = OSLog(subsystem: "com.example.app", category: "SomeOperation") os_signpost(.begin, log: log, name: "doSomething") doSomething() os_signpost(.end, log: log, name: "doSomething")
6. Measuring Asynchronous Intervals import os.signpost let log = OSLog(subsystem: "com.example.app", category: "SomeOperation") for element in elements { os_signpost(.begin, log: log, name: "doSomething") // Asynchronously doSomething(element) { // Measuring may fail ! os_signpost(.end, log: log, name: "doSomething") } }
7. Measuring Asynchronous Intervals import os.signpost let log = OSLog(subsystem: "com.example.app", category: "SomeOperation") for element in elements { let signpostID = OSSignpostID(log: log) os_signpost(.begin, log: log, name: "doSomething", signpostID: signpostID) // Asynchronously doSomething(element) { os_signpost(.end, log: log, name: "doSomething", signpostID: signpostID) } }
8. Custom Metadata C-APIϥΠΫʹϝλ৘ใΛෳ਺ࢦఆՄೳ(CVarArg) os_signpost(.begin, log: log, name: name, signpostID: signpostID, "%s, %d", description, number)
9. Demo h"ps:/ /github.com/shoheiyokoyama/DebuggingPerformance