305231 - Loading a large directory listing hangs mozilla for 45 seconds

Status: NEW

(Core :: Layout: Tables, defect)

Description

[Christian :Biesinger (don't email me, ping me on IRC)]

Steps to reproduce:
0. mkdir /tmp/testdir
1. for i in `seq 1 10000`; do mkdir /tmp/testdir/$i; done
2. Load /tmp/testdir in mozilla

Results: Browser basically hung for 45 sec (not completely, it occasionally
redrew the interface, but not much interaction was possible)

Expected results: Browser renders that a lot faster

Note that single table vs multiple table in the directory listing generating
code does not really make a difference (see bug 288810 comment 18)

Comment 1

[Boris Zbarsky [:bzbarsky]]

Attachment: Profile

Nothing obviously new here; just various known slowness...

Comment 2

[Hermann Schwab]

Bug 304598 Hang up loading this page
is about loading a directory, there are zipped testcases with 5000 and 25000
links, and an unzipped testcase with 2500 links:

https://bugzilla.mozilla.org/attachment.cgi?id=193240

While loading the page my Celeron 333 is at 95% CPU for some time, and after
closing the tab the CPU is at 95% for the same time.

Comment 3

[Boris Zbarsky [:bzbarsky]]

> Bug 304598 Hang up loading this page

Very different issue from this bug -- totally different profile data.