Hi.
As (maybe) part of another issue which I am still trying to track down
with the concerned network people (client write errors, Sample 2 below),
I find the following kind of messages regularly in the mod_jk logfile
(Sample 1).
I just want to know if this indicates a problem somewhere, or if these
are normal occurrences.
These [info] messages do not always come as often as shown below, but
seem to come with some regularity nevertheless.
Basically, my question is whether this indicates that there might be a
discrepancy between front-end and back(-)end or something of the kind,
or if there is some other parameter to adjust to make these go away.
Apache 2.x prefork MPM
mod_jk 1.2.27
Tomcat 5.5.x
under RHEL, single host
JkLogLevel info
and
worker.ajp13.port=8009
worker.ajp13.host=localhost
worker.ajp13.type=ajp13
# new options since 1.2.27 :
worker.ajp13.ping_mode=A
(single worker, no load balancing)
back-end Connector :
<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3"
maxThreads="150" minSpareThreads="25" maxSpareThreads="100"
backlog="100" />
Sample 1 :
--------
[Tue Apr 21 13:34:59 2009] GET /myapp/normen/servlet.myapp 200 0.007701 4897
[Tue Apr 21 13:34:59 2009] GET /myapp/normen/servlet.myapp 200 0.004344 1457
[Tue Apr 21 13:34:59 2009] GET /myapp/normen/servlet.myapp 200 0.101926 1945
[Tue Apr 21 13:34:59 2009] GET /myapp/normen/servlet.myapp 200 0.322939
296975
[Tue Apr 21 13:35:14 2009] POST /myapp/normen/servlet.myapp 200 0.032625
1576
[Tue Apr 21 13:35:14 2009] GET /myapp/normen/servlet.myapp 200 0.003084 4176
[Tue Apr 21 13:35:14 2009] [18753:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 16 returned -32 (errno=32)
[Tue Apr 21 13:35:14 2009] [18753:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:35:14 2009] [18753:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:35:14 2009] GET /myapp/normen/servlet.myapp 200 0.010538 1366
[Tue Apr 21 13:35:14 2009] GET /myapp/normen/servlet.myapp 200 0.002768 2507
[Tue Apr 21 13:35:14 2009] GET /myapp/normen/servlet.myapp 200 0.002658 1999
[Tue Apr 21 13:35:17 2009] POST /myapp/normen/servlet.myapp 200 0.060688
21560
[Tue Apr 21 13:35:19 2009] POST /myapp/normen/servlet.myapp 200 0.017692
23635
[Tue Apr 21 13:35:22 2009] POST /myapp/normen/servlet.myapp 200 1.032645
21400
[Tue Apr 21 13:35:34 2009] [30410:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 16 returned -32 (errno=32)
[Tue Apr 21 13:35:34 2009] [30410:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:35:34 2009] [30410:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:35:34 2009] POST /myapp/normen/servlet.myapp 200 0.071825
20753
[Tue Apr 21 13:35:36 2009] POST /myapp/normen/servlet.myapp 200 0.115782
14137
[Tue Apr 21 13:35:56 2009] [30413:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 1 returned -32 (errno=32)
[Tue Apr 21 13:35:56 2009] [30413:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:35:56 2009] [30413:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:35:56 2009] POST /myapp/normen/servlet.myapp 200 0.040233
20753
[Tue Apr 21 13:35:57 2009] [29827:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 16 returned -32 (errno=32)
[Tue Apr 21 13:35:57 2009] [29827:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:35:57 2009] [29827:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:35:57 2009] POST /myapp/normen/servlet.myapp 200 0.036396
12264
[Tue Apr 21 13:36:36 2009] GET /myapp/normen/servlet.myapp 200 0.292587 1409
[Tue Apr 21 13:36:36 2009] GET /myapp/normen/servlet.myapp 200 0.010833 6729
[Tue Apr 21 13:36:36 2009] GET /myapp/normen/servlet.myapp 200 0.015750 3484
[Tue Apr 21 13:36:36 2009] GET /myapp/normen/servlet.myapp 200 0.032983 2915
Sample 2 : (for illustration of the other issue only)
--------
[Tue Apr 21 13:15:32 2009] GET /myapp/normen/servlet.myapp 200 0.016737 6729
[Tue Apr 21 13:15:32 2009] GET /myapp/normen/servlet.myapp 200 0.019133 3484
[Tue Apr 21 13:15:32 2009] GET /myapp/normen/servlet.myapp 200 0.010458 2915
[Tue Apr 21 13:15:32 2009] GET /myapp/normen/servlet.myapp 200 0.112756
18897
[Tue Apr 21 13:15:44 2009] [29831:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 1 returned -32 (errno=32)
[Tue Apr 21 13:15:44 2009] [29831:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:15:44 2009] [29831:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:15:44 2009] [30401:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 17 returned -32 (errno=32)
[Tue Apr 21 13:15:44 2009] [30401:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:15:44 2009] [30401:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:15:49 2009] [29827:2537034048] [info]
ajp_connection_tcp_send_message::jk_ajp_common.c (1064): sendfull for
socket 16 returned -32 (errno=32)
[Tue Apr 21 13:15:49 2009] [29827:2537034048] [info]
ajp_handle_cping_cpong::jk_ajp_common.c (855): can't send cping query
[Tue Apr 21 13:15:49 2009] [29827:2537034048] [info]
ajp_maintain::jk_ajp_common.c (3046): (ajp13) failed sending request,
socket -1 keepalive cping/cpong failure (errno=32)
[Tue Apr 21 13:15:49 2009] [29831:2537034048] [info]
ajp_process_callback::jk_ajp_common.c (1748): Writing to client aborted
or client network problems
[Tue Apr 21 13:15:49 2009] [29831:2537034048] [info]
ajp_service::jk_ajp_common.c (2407): (ajp13) sending request to tomcat
failed (unrecoverable), because of client write error (attempt=1)
[Tue Apr 21 13:15:49 2009] POST /myapp/normen/servlet.myapp 200 5.210358
8184
[Tue Apr 21 13:15:49 2009] [29831:2537034048] [info]
jk_handler::mod_jk.c (2469): Aborting connection for worker=ajp13
[Tue Apr 21 13:15:49 2009] POST /myapp/normen/servlet.myapp 200 0.363977
20753
[Tue Apr 21 13:15:54 2009] POST /myapp/normen/servlet.myapp 200 9.057331
20755
[Tue Apr 21 13:15:55 2009] POST /myapp/normen/servlet.myapp 200 0.215937
14166
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