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From "Aneesha Pant" <Aneesha.P...@edelcap.com>
Subject RE: Problem with apache tomcat while running load test
Date Fri, 10 Jul 2009 05:31:04 GMT
We have configured 2 tomcats with 1 Apache on the same box, but during
performance testing, we are continuously getting these errors in the
mod_jk log
Please help

[Thu Jul 09 18:50:53 2009] [13862:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [13796:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [13842:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [13807:50960] [info]  service::jk_lb_worker.c
(1098): service failed, worker worker1 is in error state
[Thu Jul 09 18:50:53 2009] [14122:50960] [info]  service::jk_lb_worker.c
(1160): All tomcat instances are busy or in error state
[Thu Jul 09 18:50:53 2009] [14032:50960] [info]  service::jk_lb_worker.c
(1160): All tomcat instances are busy or in error state
[Thu Jul 09 18:50:53 2009] [13500:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [13922:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [13828:50960] [info]  jk_handler::mod_jk.c
(2254): Service error=0 for worker=loadbalancer
[Thu Jul 09 18:50:53 2009] [13908:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [13952:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14033:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13728:50960] [info]
ajp_connect_to_endpoint::jk_ajp_common.c (876): Failed opening socket to
(130.11.1.165:8009) (errno=111)
[Thu Jul 09 18:50:53 2009] [14098:50960] [info]  service::jk_lb_worker.c
(1160): All tomcat instances are busy or in error state
[Thu Jul 09 18:50:53 2009] [14082:50960] [info]  service::jk_lb_worker.c
(1098): service failed, worker worker1 is in error state
[Thu Jul 09 18:50:53 2009] [14067:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14069:50960] [info]
ajp_service::jk_ajp_common.c (1941): (worker1) sending request to tomcat
failed,  recoverable operation attempt=2
[Thu Jul 09 18:50:53 2009] [13973:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13902:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [14050:50960] [info]
ajp_service::jk_ajp_common.c (1941): (worker1) sending request to tomcat
failed,  recoverable operation attempt=2
[Thu Jul 09 18:50:53 2009] [13943:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13909:50960] [error]
ajp_service::jk_ajp_common.c (1953): (worker1) Connecting to tomcat
failed. Tomcat is probably not started or is listening on the wrong port
[Thu Jul 09 18:50:53 2009] [14244:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14171:50960] [info]
ajp_service::jk_ajp_common.c (1941): (worker1) sending request to tomcat
failed,  recoverable operation attempt=2
[Thu Jul 09 18:50:53 2009] [14114:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13849:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13970:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [14168:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14014:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13915:50960] [info]  service::jk_lb_worker.c
(1160): All tomcat instances are busy or in error state
[Thu Jul 09 18:50:53 2009] [14062:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14121:50960] [info]
ajp_service::jk_ajp_common.c (1941): (worker1) sending request to tomcat
failed,  recoverable operation attempt=2
[Thu Jul 09 18:50:53 2009] [14047:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14039:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [14042:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13726:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [13713:50960] [info]
ajp_send_request::jk_ajp_common.c (1241): (worker2) all endpoints are
disconnected
[Thu Jul 09 18:50:53 2009] [14101:50960] [info]
ajp_send_request::jk_ajp_common.c (1244): (worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[Thu Jul 09 18:50:53 2009] [14102:50960] [info]
ajp_send_request::jk_ajp_common.c (1244): (worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[Thu Jul 09 18:50:53 2009] [13855:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [14043:50960] [info]
ajp_send_request::jk_ajp_common.c (1244): (worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[Thu Jul 09 18:50:53 2009] [13887:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker2) error connecting to
the backend server (errno=111)
[Thu Jul 09 18:50:53 2009] [13841:50960] [info]
ajp_send_request::jk_ajp_common.c (1273): (worker1) error connecting to
the backend server (errno=111)




-----Original Message-----
From: Aneesha Pant 
Sent: 15 June 2009 5:27 PM
To: Tomcat Users List
Subject: RE: Problem with apache tomcat while running load test

There is nothing in any of the log files. The application we are using
works on Tomcat 5.0.16, have not yet tested on latest tomcat. Yes Mod_jk
the version is mod_jk-1.2.25-httpd-2.0.59.so
mod_jk-1.2.23-apache-2.2.x-linux-i68

-----Original Message-----
From: Peter Crowther [mailto:Peter.Crowther@melandra.com] 
Sent: 15 June 2009 4:50 PM
To: 'Tomcat Users List'
Subject: RE: Problem with apache tomcat while running load test

Any messages in any of the (many) log files?
Connector version?  I assume mod_jk, but which?
Out of interest, why are you using an unsupported Tomcat version?

        - Peter

________________________________
From: Aneesha Pant [mailto:Aneesha.Pant@edelcap.com]
Sent: 15 June 2009 12:09
To: users@tomcat.apache.org
Subject: Problem with apache tomcat while running load test

We are trying to run a load test using Borland Silk route on a
application running on Tomcat 5.0.16 on Apache 2.2.3.11. we have
configured 4 tomcats with 1 Apache using worker.properties file. when we
try to run 1000 concurrent users doing transactions on the website the
site stops responding after about 10 min. on the server side we have
observed that the cpu utilisation shoots upto 100% for server process
(Apache). the user cpu utilisation is not much. Then the site hangs and
the cpu become 100% idle. this is a very strange behavior, we observed
that the max httpd connects was going upto 2050, so we increased the
maxclients to 3072 (earlier tried with 1024 & 2048). We have tried to
increase the RAM of the TOM cat from 1GB to 2GB each, but no significant
difference in the behavior.

Server Dell 2950
OS Red HAT- 5.2


Aneesha Pant
AVP - BSG & Tech
Dir: +91 (22) 4079 5085
<http://www.edelcap.com/>
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