293022 - Slow loading of paypal.com with bfcache enabled

Status: RESOLVED WORKSFORME

(Core :: DOM: Navigation, defect)

Description

[u88484]

1) open ff
2) type in the address bar one of the following http://www.paypal.com,
https://www.paypal.com, http://paypal.com, paypal(ctrl+enter)
3) FF acts like nglayout pref is set to 5000 

also say results when i hit back button then forward again to paypal or another
like secure site (bugzilla.mozilla.org, https://www.usaa.com)

also got this in the jsconsole but only for paypal

Error: [Exception... "'Permission denied to get property
XULElement.selectedIndex' when calling method:
[nsIAutoCompletePopup::selectedIndex]" nsresult: "0x8057001e
(NS_ERROR_XPC_JS_THREW_STRING)" location: "JS frame :: https://www.paypal.com/
:: <TOP_LEVEL> :: line 77" data: no]
Source File: https://www.paypal.com/
Line: 77

Comment 1

[u88484]

regression of #274784?

Comment 2

[Boris Zbarsky [:bzbarsky]]

So if you disable bfcache it loads fast?

Comment 3

[u88484]

correct, the page hangs for about 3 seconds before its renderd

Comment 4

[Boris Zbarsky [:bzbarsky]]

Er... 3 seconds without bfcache?  Against 5 seconds with?  Is that the bug
you're describing?  Or is the 3 seconds with bfcache?

Basically, the "correct" and "hangs for 3 seconds" parts of your answer are not
reconciling in my head...

Comment 5

[u88484]

Sorry...with bfcache set to 10, paypal takes 3 seconds to load when going back
and forward from any page to paypal.com.

also on first load of paypal.com the page takes about 3 seconds to load.

All other pages usually instantaneously load for me on my 6mbit cable connection
and this is even on page which I have never visited before so its not just
because of cache.

With bfcache disabled paypal.com loads instantaneously as well as other pages
and going back and forward takes about 1/2 a second. 

(I really never had slow back/forward behavior before bfcache but it has sped up
 some pages that have ads and such.)

Comment 6

[Boris Zbarsky [:bzbarsky]]

Brian, any idea what's going on here?

Comment 7

[Peter van der Woude [:Peter6]]

(In reply to comment #3)
> correct, the page hangs for about 3 seconds before its rendered

Kurt, can you retry in -safemode ?
I asked on forums and a few with Paypla account denied having any slowdown at all

Comment 8

[Brian Ryner (not reading)]

Paypal is not saved in bfcache because it is an https site that uses Pragma:
no-cache.  Other than that though, I fail to see that it's any slower to load
with bfcache enabled than with it disabled.  Just don't expect a speedup.

Comment 9

[Boris Zbarsky [:bzbarsky]]

Could the fix for bug 298794 have made this one better?  Kurt, do you still see
the problem in a current trunk build?