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What causes Error Console to report a TelemetryStopwatch error every few minutes?

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What causes Error Console to report a TelemetryStopwatch error every few minutes?

While debugging my JavaScript code, I find the Error Console very useful. Besides the errors in my code, it also shows error messages about other peoples' code for sites that I have open. This is a little annoying, because I have to click "Clear" each time or else scroll down to see my error messages.

To simplify matters, I closed all tabs and windows except my own window (without tabs) where I'm testing my JavaScript program. All the other error messages disappeared -- except one. This lone leftover message appears every few minutes in PINK (I guess that means it's serious) even when my program's window is the only one open, without any tabs:

Timestamp: 12/14/12 11:47:39 AM Error: TelemetryStopwatch: key "FX_SESSION_RESTORE_COLLECT_DATA_MS" was already initialized Source File: resource://gre/modules/TelemetryStopwatch.jsm Line: 53

I clicked on the Source File (it's blue and underlined in the original) and up popped a source listing of some file from inside the Firefox.app package. Lines 52 and 53 read as follows:

     Cu.reportError("TelemetryStopwatch: key \"" +
                    aHistogram + "\" was already initialized");

Any idea what this is about?

--Gil

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Site Moderator

Re: What causes Error Console to report a TelemetryStopwatch error every few minutes?

hello gil, usually after a fresh install firefox asks you to help by submitting performance data to mozilla. this is internally dubbed "telemetry", so the error you're seeing is likely linked to this functionality.

according to bug #732874 this will be fixed in the next version of firefox. in case you want to, you can also disable the gathering & submission of performance data in preferences > advanced > general for the moment...

2 REPLIES
Site Moderator

Re: What causes Error Console to report a TelemetryStopwatch error every few minutes?

hello gil, usually after a fresh install firefox asks you to help by submitting performance data to mozilla. this is internally dubbed "telemetry", so the error you're seeing is likely linked to this functionality.

according to bug #732874 this will be fixed in the next version of firefox. in case you want to, you can also disable the gathering & submission of performance data in preferences > advanced > general for the moment...

New Contributor

Re: What causes Error Console to report a TelemetryStopwatch error every few minutes?

Thanks, madperson, for an excellent reply. It seems to be working!

--Gil