Bug 20123 – REGRESSION: WebKit hangs consuming all CPU at junauza.com

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: New Bugs

[Dave English]

When I try to browse this web page, the browser hangs before finishing displaying it.  The browser consumes all of a CPU, 50% of my dual CPU PC that is.

I am running the nightly build r35130.

I tried disabling plugins, just in case this was a flash player thing, but it still hung.

If I browse using the regular Safari browser, 3.1.2 525.21 the page displays without a hang.

[Alexey Proskuryakov]

This doesn't happen for me with r35250 on the Mac.

[Matt Lilek]

The page loads fine for me on Vista.  In the latest nightly (r35130), it consumes around 50% CPU after it's loaded, but going to the home page and a couple other pages around the site, I barely see any CPU usage after it's loaded.  In a local debug build of r35260, I don't see high CPU usage at all on any page.

[Dave English]

Checking further, this only hangs on my dual CPU desktop, not my single CPU laptop.  Processor usage sits just above 50% all of the time, so I suspected one was spinning.

Looking at the Windows Task Manager, I see varying usage of both CPUs, but always above 50% & the browser is completely hung, it needs the safari.exe process to be ended.

I will attach a screenshot of the taskman.

The desktop machine is a Dell Precision WorkStation 670 with two 2.8GHz Xenon processors.

The OS is XP SP3.

[Dave English]

Created attachment 22403 [details]
Screenshot of Windows Task Manager to show 50% CPU usage

[Dave English]

Tis URL works without problem now in nightly build 35406

[Robert Blaut]

(In reply to comment #5)
> Tis URL works without problem now in nightly build 35406
> 

So the report can be closed now.