url causes Apache to become unresponsive due to high load.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. The url http://torlac.com/Mihai_Torlac/rapita.html crashes the server every 
time I try to access it.

What is the expected output? What do you see instead?
It just crashes the server due to high load.

What version of the product are you using (please check X-Mod-Pagespeed
header)?
0.9.0.0-128

On what operating system?
RHEL5

Which version of Apache?
Apache/2.2.3


Please provide any additional information below, especially a URL or an
HTML file that exhibits the problem.

The error_log file gets a few thousands lines of this error and continues until 
I kill apache:
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] 
Initiating async fetch for http://torlac.com/Mihai_Torlac/rapita.html
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/util/google_message_handler.cc(29)] 
http://torlac.com/Mihai_Torlac/rapita.html: Couldn't fetch resource  to rewrite.
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] 
Initiating async fetch for http://torlac.com/Mihai_Torlac/rapita.html
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/util/google_message_handler.cc(29)] 
http://torlac.com/Mihai_Torlac/rapita.html: Couldn't fetch resource  to rewrite.
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] 
Initiating async fetch for http://torlac.com/Mihai_Torlac/rapita.html
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/util/google_message_handler.cc(29)] 
http://torlac.com/Mihai_Torlac/rapita.html: Couldn't fetch resource  to rewrite.
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] 
Initiating async fetch for http://torlac.com/Mihai_Torlac/rapita.html
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/util/google_message_handler.cc(29)] 
http://torlac.com/Mihai_Torlac/rapita.html: Couldn't fetch resource  to rewrite.
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] 
Initiating async fetch for http://torlac.com/Mihai_Torlac/rapita.html
[Mon Nov 08 06:11:26 2010] [notice] 
[1108/061126:INFO:net/instaweb/util/google_message_handler.cc(29)] 
http://torlac.com/Mihai_Torlac/rapita.html: Couldn't fetch resource  to rewrite.

This url is the only one that does this, other websites work without problem. 
The website was made with iWeb 3.0.1.

Original issue reported on code.google.com by ionut.ne...@gmail.com on 8 Nov 2010 at 12:28

[GoogleCodeExporter]

Thanks for the report.  We have already fixed this issue in the open-source 
distribution and will release binaries today.  We'll update this bug when the 
binaries are available.

Original comment by jmara...@google.com on 8 Nov 2010 at 12:49

[GoogleCodeExporter]

The change that we believe fixes most of the server load problems is now 
available in both source and binary form.

However there are still remaining cases of server load issues we are trying to 
track down, so I'll leave this one open for now.

However, it's definitely worth loading the latest binaries.

Original comment by jmara...@google.com on 9 Nov 2010 at 10:37

[GoogleCodeExporter]

Original comment by jmara...@google.com on 9 Nov 2010 at 10:38

• Changed title: url causes Apache to become unresponsive due to high load.

[GoogleCodeExporter]

The load problem is still present, tho there are new errors:

[Tue Nov 09 21:14:57 2010] [warn] http://torlac.com/:1: Invalid tag syntax: 
unexpected sequence `<?'
[Tue Nov 09 21:14:57 2010] [warn] http://torlac.com/Mihai_Torlac/rapita.html:1: 
Invalid tag syntax: unexpected sequence `<?'
[Tue Nov 09 21:15:55 2010] [error] 
http://torlac.com/Mihai_Torlac/rapita.html:0: serf_context_run error status=110 
(Connection timed out)
[Tue Nov 09 21:15:57 2010] [error] 
http://torlac.com/Mihai_Torlac/rapita_files/mwmac.png:0: serf_context_run error 
status=110 (Connection timed out)

Using build mod-pagespeed-beta-0.9.1.1-171

Original comment by ionut.ne...@gmail.com on 10 Nov 2010 at 3:28

[GoogleCodeExporter]

Hi -- we were not able to reproduce server stability problem with a local 
mirror of your site.  However, we were able to fix a number of other issues 
with your site, including the above warnings, which we believe to be false.

We also have reproduced and fixed another server stability problem which is 
worth testing for you.  If you can build mod_pagespeed from SVN, would you 
please give it a try and let us know if it fixes your site?

Original comment by jmara...@google.com on 13 Nov 2010 at 12:53

[GoogleCodeExporter]

Unfortunately my gcc is at v4.1.2 and can't easily update it. I'll have to play 
when new builds are released.

Original comment by ionut.ne...@gmail.com on 13 Nov 2010 at 1:25

[GoogleCodeExporter]

I believe your original problem was Issue 85, which has been fixed in SVN and 
should be in the next binary release (hopefully coming out today).

Original comment by abl...@google.com on 23 Nov 2010 at 4:01

• Changed state: Fixed

[GoogleCodeExporter]

Original comment by sligocki@google.com on 23 Nov 2010 at 4:04

• Changed state: Duplicate

[GoogleCodeExporter]

Oops, wrong bug.

Original comment by sligocki@google.com on 23 Nov 2010 at 4:04

• Changed state: Fixed