Robert Sayre Reporter
	Description • 15 years ago

It's hard to open a big tinderbox log without spending a long time with a beachball on OS X, at least.

	David Baron :dbaron:
	Comment 3 • 15 years ago

Do you have the HTML5 parser enabled?

	Robert Sayre Reporter
	Comment 4 • 15 years ago

http://blog.mozilla.com/rob-sayre/2009/09/09/spincontrol/

	Robert Sayre Reporter
	Comment 5 • 15 years ago

(In reply to comment #3)
> Do you have the HTML5 parser enabled?

Yes!

	David Baron :dbaron:
	Comment 6 • 15 years ago

Does this go away if you disable the HTML5 parser?

The HTML5 parser disabled the chunking of text nodes; we used to create separate text nodes for each 8K chunk of text; now it's all one huge text node.

I think there are some existing bugs on the resulting performance regressions.

	Robert Sayre Reporter
	Comment 7 • 15 years ago

(In reply to comment #6)
> Does this go away if you disable the HTML5 parser?
> 
> The HTML5 parser disabled the chunking of text nodes; we used to create
> separate text nodes for each 8K chunk of text; now it's all one huge text node.

It does go away. At least we got a new tool out of it. :)

	Henri Sivonen (:hsivonen) (away from Bugzilla until 2023-09-11)
	Comment 8 • 15 years ago

Related to bug 502568.

	Mike Conley (:mconley) (:⚙️)
	Comment 9 • 6 years ago

Another sample.

	Mike Conley (:mconley) (:⚙️)
	Comment 10 • 6 years ago

According to catlee, this still affects us, all these years later.

	Daniel Holbert [:dholbert]
	Comment 12 • 6 years ago

(In reply to Mike Conley (:mconley) (:⚙️) from comment #10)
> According to catlee, this still affects us, all these years later.

Can you/he post a testcase where this is bad? The first two attachments here load near instantly for me, on Linux nightly. (And for now Firefox prompts me to download the 3rd attachment rather than directly rendering it, so I'm not sure if that one is bad or good.)

	Mike Conley (:mconley) (:⚙️)
	Comment 13 • 6 years ago

https://taskcluster-artifacts.net/XZmhivqwQUKrk15pEu7R9Q/0/public/logs/live_backing.log

	Daniel Holbert [:dholbert]
	Comment 14 • 6 years ago

That file is a 27 meg text file (orders of magnitude larger than the testcases we had here, which now load instantly).

I spun off bug 1501415 for that issue, and I'm going to close this old bug as WORKSFORME, since its original testcases are fine now.