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From Andrea Carpani <ancar...@vitaminic.net>
Subject ajp13 threads blocking
Date Mon, 19 Aug 2002 14:59:51 GMT
Hi everybody: I'm experiencing a strange and randomic problem with my
tomcat configuration. Here's the software: I'm using Tomcat 4.0.4 with
sun's jdk 1.3.1_04 as a servlet and jsp container, behind a 1.2.36
Apache web server.

CATALINA_OPTS="-server -ms256m -mx512m -Xss32k"

The server starts up fine, but after a (more or less) 12 hours running
time something breaks (loks up?) and I get these on mod_jk.log:

[Mon Aug 19 03:21:52 2002]  [jk_ajp_common.c (1009)]: Error reading
reply
[Mon Aug 19 03:21:52 2002]  [jk_ajp_common.c (1146)]: In
jk_endpoint_t::service, ajp_get_reply failed in send loop 0
[Mon Aug 19 03:21:52 2002]  [jk_ajp_common.c (651)]:
ajp_connection_tcp_get_message: Error - jk_tcp_socket_recvfull failed

At this point jakarta is more or less hung and there's little you can do
with it: one option is to restart it, another is to restart the apache
web server and everything seems to run fine for another 12 h or so.

I've had tomcat running under a java profiler and it looks like the
ajp13 threads are all "blocked" when things go wrong.

Is this a known bug?
Thanks.


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- Andrea Carpani
- <ancarpan@vitaminic.net>

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