As a test, I installed Apache 1.3.34 (the latest 1.3 release) and
directed this to use the latest mod_jk connector with the latest build
of tomcat (5.5.12). This has miraculously solved the slowness problem
with large files - it appears the problem is probably an Apache 2/mod_jk
issue. We'll need to investigate whether any of our web services will be
affected by going back to an Apache 1.3 environment, but this is
probably what we will have to do. However, we would rather not have to
"go backwards" if possible, and I'm hoping that someone may have an idea
as to what component of Apache 2 might be the cause of our problems.
Any help would be appreciated.
Regards,
Guy
Guy Knights wrote:
Sorry, I forgot to update my original post - yes, we have tried 1.2.14
and the same problem occurred.
I've done a bit more testing since yesterday, and discovered the
following about the problem:
- if I redirect any large file to be served through the connector, it
gives the same slow response (approx. 38K/s). I've tried an .exe and a
.tar file. The PDFs I mentioned previously are about 12mb each.
- removing the redirector for these large files, so that they are
instead served directly by apache increases the download speed to 126
MB/s. This is also the case if I serve them directly via tomcat. ie.
something is happening when tomcat and apache communicate to serve the
files.
- I used wget to access the files directly from the box that they are
served from, and experienced exactly the same issue.
- in the configuration for mod_jk, I had the loglevel set to debug. I
changed this to loglevel error, and then removed it altogether, but
the slowness issue wasn't resolved.
Any help would be greatly appreciated.
Thanks,
Guy
GB Developer wrote:
-----Original Message-----
From: Guy Knights [mailto:[EMAIL PROTECTED] Sent: Sunday,
October 30, 2005 7:38 PM
To: Tomcat Mailing List
Subject: Tomcat-Apache slow PDF response
- compiling and installing the latest mod_jk connector (1.2.6) and
testing this with a test copy of apache (2.0.54) and the same copy
of tomcat. This didn't solve the problem.
It might not make a differenc, but latest jk is 1.2.14
http://tomcat.apache.org/connectors-doc/news/20050101.html#20050713.1
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Guy Knights
Computer Systems Officer
Library Systems
QUT
Victoria Park Road, Kelvin Grove
Ph: (617) 3864 3350
Fax: (617) 3864 5539
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