Open Bug 971301 Opened 6 years ago Updated Last year
Investigate console logging expenses
Nick and I have a sneaking suspicion that calls to Log.* and isLoggable are having an impact on our overall perf. It is, after all, I/O -- and a lot of it. And a lot of string concatenation, allocation, and GC, too. We should: * Measure * Switch to Logger (which is more efficient) or remove log statements * Consider the use of selective preprocessing or Proguarding to eliminate the argument-compilation costs of disabled logging. Furthermore, I think that initializing for a console.log statement in browser.js is causing ConsoleAPI.init to have a measurable impact on our startup profile. This is called from HealthReportStatusListener.init() @ browser.js:5529 pbu_privacyContextFromWindow() @ PrivateBrowsingUtils.jsm:23 AppUtils.jsm (via Webapps*) We should strip out unnecessary logging from browser.js and its dependent modules so that we can delay initialization of the console API.
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