167310 - Parse tree cache

Status: RESOLVED DUPLICATE of bug 38486

(Core :: DOM: HTML Parser, enhancement)

Description

[Sarah Evans]

MSIE is able to immediately display pages in its cache (just try hitting the
back button in MSIE compared with doing so in Mozilla). This is probably because
it caches more than just the sources of a page, but also its internal parse
tree. This greatly improves the user's perception of browser speed, as the back
button in particular is very commonly used to backtrace through a series of
pages, which can get tedious with Mozilla.

I believe that implementing a parse tree cache would be a great optimisation for
these cases.

I've taken an explanation from http://www.mozilla.org/performance/projects.html:

<quote>
Parse tree cache. Cache the persistent model of a page along with the content
cache, and use this when displaying the page from the cache. This would achieve
"reflow-level" performance when page is displayed from cache.
</quote>

Comment 1

[Jo Hermans]

*** This bug has been marked as a duplicate of 38486 ***