iOS应用Fabric缺失dSYM：Crashlytics统计数据影响咨询

Let’s tackle your two key questions directly, based on how Crashlytics actually tracks and reports metrics:

1. Does missing dSYMs affect crash count statistics? #

No, it does not impact the accuracy of crash counts. Crashlytics captures and counts every crash event as soon as it occurs in the app, regardless of whether dSYMs are available for symbolication. The dSYM files are only used to translate raw memory addresses in crash reports into readable, human-friendly code locations (like specific function names or line numbers).

So even without dSYMs, you’ll still get an accurate count of how many times crashes are happening—you just won’t be able to pinpoint exactly where in your code the crashes are occurring.

2. Does missing dSYMs affect crash-free user and session counts? #

Again, no—these metrics remain fully accurate. Crash-free users/sessions are calculated based on whether a crash event was reported for a given user or session. If a user’s app crashes, Crashlytics receives the crash event (even without dSYMs) and excludes that user/session from the crash-free tally.

As long as your app is properly configured to send crash reports to Crashlytics (which it sounds like it is, since you’re seeing dSYM warnings), the crash-free metrics will reflect the true stability of your app.

Recommendation for your release decision #

You don’t need to pause your version release for the sake of core stability report accuracy. The crash count, crash-free user, and crash-free session metrics are all reliable even with missing dSYMs.

That said, you should prioritize fixing the dSYM upload issue post-release—without dSYMs, you can’t diagnose and fix the root causes of the crashes you’re seeing. To troubleshoot the upload failure, check:

• That your Xcode project has "Debug Information Format" set to DWARF with dSYM File for all build configurations
• That the Crashlytics run script is properly added to your Xcode build phases (it should run after the "Compile Sources" phase)
• That you’re using the latest version of the Firebase/Crashlytics SDK
• If manual uploads aren’t working, try using the upload-symbols command-line tool with the correct path to your dSYMs and Firebase GoogleService-Info.plist

内容的提问来源于stack exchange，提问作者aryaxt