Clear startup cache button in Troubleshooting Information

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Post Posted June 28th, 2020, 11:03 am

When was that added?

I haven't opened that page in ages and noticed it today when I wanted to check the BuildID to see if Nightly was up to date, which it wasn't and I was still using the 201200626 build.

Updated and restarted, cleared the startup cache and restarted again as directed.

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Post Posted June 28th, 2020, 10:00 pm

I hadn't noticed it either. After trying to track it down in Bugzilla (didn't find) and in Google, I came across a blog that mentioned it as new in v. 79 (currently Nightly):

How to Clear Startup Cache in Firefox from About:support Page (Nightly)

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Post Posted June 29th, 2020, 5:53 am

Does this refer to the same cache as the -purgecaches commandline option which clears a JavaScript startup cache?


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Post Posted June 29th, 2020, 8:07 am

(So I was reading this, & I opened about:support, & I say to myself, "why don't I see it?"?
Then I realized I was reading this in SeaMonkey ;-).)

Looks like it. If you watch before & after (with that switch), you'll see where startupCache.4.little is touched, & smaller then its previous self. (Oh - this with with checking - using the switch - not the GUI option. But you could do the same. Clear attributes. Note date/time/size of startupCache.4.little, hit the button, Quit, & note what changed.)
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20110420 SeaMonkey/2.0.14 Pinball CopyURL+ FetchTextURL FlashGot NoScript

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Post Posted June 29th, 2020, 6:57 pm

@therube - According to Mark12547's link, the GUI option deletes the entire startupCache folder, so apparently it does at least as much as purgecaches, if not more. Close enough.


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Post Posted July 2nd, 2020, 2:24 pm

Bug 1569653 - Add button to invalidate startup cache in about:support [79]

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