Hi.
Thanks for answering me.
On 1/23/07, Rainer Jung <[EMAIL PROTECTED]> wrote:
Hi,
heind heind schrieb:
> Hi,
>
> I have a web application deployed in tomcat embedded in jonas 4.7.4
> Application Server, and in frontend there are apache 2.0.55 and mod_jk
> 12.20.
>
> My issue is that the message below is generated systematically after
every
> jsp call although the jsp are well served and the application works
fine.
>
>
...
> My question is what is the meaning of this message and how to avoid a
> second
> attempt ?
>
> PS :
> - my Apache is 2.0.55 prefork so I can't increase the
> connectio_pool_minsize
> (cf. http://tomcat.apache.org/connectors-doc/reference/workers.html )
> - the workers.properties is in standard configuration.
>There is no "standard" configuration. Please post your
>workers.properties, the Jk* directives and the config of the prefork MPM
>from your apache config and the tomcat AJP/1.3 connector config from
>server.xml.
workers.properties
worker.list=w,jkstatus
# workers vers v440r-01
worker.w_worker1.port=8407
worker.w_worker1.host=v440r-01
worker.w_worker1.type=ajp13
worker.w_worker1.lbfactor=1
worker.w_worker1.distance=1
worker.w_worker1.connection_pool_minsize=1
worker.w_worker1.connection_pool_size=2
# workers vers v440r-02
worker.w_worker2.port=8407
worker.w_worker2.host=10.198.45.5
worker.w_worker2.type=ajp13
worker.w_worker2.lbfactor=1
worker.w_worker2.distance=0
worker.w_worker2.connection_pool_minsize=1
worker.w_worker2.connection_pool_size=2
# LB worker
worker.w.type=lb
worker.w.balance_workers=w_worker2
#worker.w.balance_workers=w_worker1,w_worker2
worker.jkstatus.type=status
jk directives
JkWorkersFile /jonasintra/logiciel/apache_mgf/conf/workers.properties
JkLogFile "|/jonasintra/logiciel/apache_mgf/bin/rotatelogs -l
/jonasintra/logiciel/apache_mgf/logs/mod_jk_%Y-%m-%d-%Hh%M.log 86400"
JkLogLevel INFO
#JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
JkLogStampFormat "[%Y-%m-%d %T (%a %d %b %Y)] "
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
#JkRequestLogFormat "%w %V %T"
JkRequestLogFormat "URL : %U - Query : %q - Duration : %Ts"
JkMount /mgf/clamweb.applications.gip.f1.ImageServlet mgf
JkMount /mgf/RefreshData mgf
JkMount /mgf/*.do mgf
JkMount /mgf/*.jsp mgf
JkMount /mgf_mrtg/*.jsp mgf
JkMount /jkmanager/* jkstatus
JkMount /mgfJonasAdmin/* mgf
JkMount /essais/* mgf
prefork mpm
<IfModule prefork.c>
ServerLimit 500
StartServers 20
MinSpareServers 10
MaxSpareServers 20
MaxClients 500
MaxRequestsPerChild 10000
</IfModule>
AJP/1.3 connector
<Connector port="8407"
maxThreads="500"
enableLookups="false" redirectPort="9043" protocol="AJP/1.3"
connectionTimeout="600000"/>
I set the connectionTimeout to the value above to avoide the broken pipe
messages in the backend.
As long as there are no messages of higher level, those info messages do
>not indicate a serious functional problem. Normally they should not show
>up for each request. Are you sure that you get those for every request?
Yes, I am sure that this message shows up for evry request when the time
between each call is about 5 min as you see below within the exemple from
mod_jk logs.
[2007-01-24 01:53:07 (Wed 24 Jan 2007)] [12965:0001] [info]
ajp_send_request::jk_ajp_common.c (1201): (mgf_worker2) error sending
request. Will try another pooled connection
[2007-01-24 01:53:07 (Wed 24 Jan 2007)] [12965:0001] [info]
ajp_send_request::jk_ajp_common.c (1227): (mgf_worker2) all endpoints are
disconnected
[2007-01-24 01:53:07 (Wed 24 Jan 2007)] [12965:0001] [info]
ajp_send_request::jk_ajp_common.c (1230): (mgf_worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[2007-01-24 01:53:07 (Wed 24 Jan 2007)] [12965:0001] [info]
ajp_service::jk_ajp_common.c (1916): (mgf_worker2) sending request to tomcat
failed, recoverable operation attempt=1
[2007-01-24 01:53:07 (Wed 24 Jan 2007)] URL : /mgf_mrtg/memory.jsp - Query
: - Duration : 0.006798s
[2007-01-24 01:58:08 (Wed 24 Jan 2007)] [12841:0001] [info]
ajp_send_request::jk_ajp_common.c (1201): (mgf_worker2) error sending
request. Will try another pooled connection
[2007-01-24 01:58:08 (Wed 24 Jan 2007)] [12841:0001] [info]
ajp_send_request::jk_ajp_common.c (1227): (mgf_worker2) all endpoints are
disconnected
[2007-01-24 01:58:08 (Wed 24 Jan 2007)] [12841:0001] [info]
ajp_send_request::jk_ajp_common.c (1230): (mgf_worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[2007-01-24 01:58:08 (Wed 24 Jan 2007)] [12841:0001] [info]
ajp_service::jk_ajp_common.c (1916): (mgf_worker2) sending request to tomcat
failed, recoverable operation attempt=1
[2007-01-24 01:58:08 (Wed 24 Jan 2007)] URL : /mgf_mrtg/memory.jsp - Query
: - Duration : 0.006775s
[2007-01-24 02:03:07 (Wed 24 Jan 2007)] [12792:0001] [info]
ajp_send_request::jk_ajp_common.c (1201): (mgf_worker2) error sending
request. Will try another pooled connection
[2007-01-24 02:03:07 (Wed 24 Jan 2007)] [12792:0001] [info]
ajp_send_request::jk_ajp_common.c (1227): (mgf_worker2) all endpoints are
disconnected
[2007-01-24 02:03:07 (Wed 24 Jan 2007)] [12792:0001] [info]
ajp_send_request::jk_ajp_common.c (1230): (mgf_worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[2007-01-24 02:03:07 (Wed 24 Jan 2007)] [12792:0001] [info]
ajp_service::jk_ajp_common.c (1916): (mgf_worker2) sending request to tomcat
failed, recoverable operation attempt=1
[2007-01-24 02:03:07 (Wed 24 Jan 2007)] URL : /mgf_mrtg/memory.jsp - Query
: - Duration : 0.007115s
[2007-01-24 02:08:07 (Wed 24 Jan 2007)] [12952:0001] [info]
ajp_send_request::jk_ajp_common.c (1201): (mgf_worker2) error sending
request. Will try another pooled connection
[2007-01-24 02:08:07 (Wed 24 Jan 2007)] [12952:0001] [info]
ajp_send_request::jk_ajp_common.c (1227): (mgf_worker2) all endpoints are
disconnected
[2007-01-24 02:08:07 (Wed 24 Jan 2007)] [12952:0001] [info]
ajp_send_request::jk_ajp_common.c (1230): (mgf_worker2) increase the backend
idle connection timeout or the connection_pool_minsize
[2007-01-24 02:08:07 (Wed 24 Jan 2007)] [12952:0001] [info]
ajp_service::jk_ajp_common.c (1916): (mgf_worker2) sending request to tomcat
failed, recoverable operation attempt=1
[2007-01-24 02:08:07 (Wed 24 Jan 2007)] URL : /mgf_mrtg/memory.jsp - Query
: - Duration : 0.006293s
[2007-01-24 02:13:07 (Wed 24 Jan 2007
What happens, if you use the binary "ab" from your apache httpd to send
>let's say 1000 requests with a parallelity of 10 (ab -c 10 -n 1000
>http://myserver:myport/myurl)?
Executing ab -c 10 -n 1000 http://myserver:myport/essais/essais.jsp
Fisrt request
[2007-01-24 15:17:50 (Wed 24 Jan 2007)] URL : /essais/essais.jsp - Query :
- Duration : 10.298479s
Fisrt message in mod_jk logs (~10 min after)
[2007-01-24 15:27:36 (Wed 24 Jan 2007)] [12811:0001] [info]
ajp_send_request::jk_ajp_common.c (1227): (mgf_worker2) all endpoints are
disconnected
[2007-01-24 15:27:36 (Wed 24 Jan 2007)] [12811:0001] [info]
ajp_send_request::jk_ajp_common.c (1230): (mgf_worker2) increase the backend
idle connection time
out or the connection_pool_minsize
[2007-01-24 15:27:36 (Wed 24 Jan 2007)] [12811:0001] [info]
ajp_service::jk_ajp_common.c (1916): (mgf_worker2) sending request to tomcat
failed, recoverable
operation attempt=1
Second message (~5 min after the previous message)
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [12882:0001] [info]
ajp_process_callback::jk_ajp_common.c (1433): Writing to client aborted or
client network problem
s
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [12882:0001] [info]
ajp_service::jk_ajp_common.c (1832): (mgf_worker2) request failed, because
of client write error
without recovery in send loop attempt=0
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [12882:0001] [info]
service::jk_lb_worker.c (979): unrecoverable error 200, request failed.
Client failed in the midd
le of request, we can't recover to another instance.
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] URL : /essais/essais.jsp - Query :
- Duration : 4.140661s
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [6187:0001] [info]
ajp_process_callback::jk_ajp_common.c (1433): Writing to client aborted or
client network problems
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [12882:0001] [info]
jk_handler::mod_jk.c (2135): Aborting connection for worker=mgf
The third message is different
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] [12945:0001] [info]
service::jk_lb_worker.c (979): unrecoverable error 200, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] URL : /essais/essais.jsp - Query :
- Duration : 16.967256s
[2007-01-24 15:32:44 (Wed 24 Jan 2007)] URL : /essais/essais.jsp - Query :
- Duration : 4.492996s
Regards,
PS : my apache is 2.0.59
Hind
