Hello, We have a Tomcat 5.5.25 server connected to Apache 2.2.9 over mod_ajp_proxy. Monitoring of the servers shows that AJP proxy connections are not reused but closed and reopened. Frequent closing of TCP connections leaves many connections in TIME_WAIT state and this is something we would prefer to avoid if possible.
While reviewing of Apache, Tomcat and mod_proxy settings I found that the response from Tomcat contains a flag that indicates if the TCP connection should be reused after the end of a request-handling cycle. http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html#resppacketstruct (See Response packet structure) My understanding of the *reuse* flag in AJP13_END_RESPONSE structure is that this flag is hard coded and cannot be controlled by configuration settings. Am i right? I couldn't find any in Tomcat AJP connector configuration that could do change the value of this setting. The ProxyPassMatch directive is using all the default settings for the proxy connection ProxyPassMatch ^/(.*) ajp://localhost:8009/$1 Apache is configured to use mpm workers. The following are Apache compile settings: # bin/apachectl -V Server version: Apache/2.2.9 (Unix) Server built: Jun 21 2008 18:48:38 Server's Module Magic Number: 20051115:15 Server loaded: APR 1.3.2, APR-Util 1.3.2 Compiled using: APR 1.3.2, APR-Util 1.3.2 Architecture: 64-bit Server MPM: Worker threaded: yes (fixed thread count) forked: yes (variable process count) Server compiled with.... -D APACHE_MPM_DIR="server/mpm/worker" -D APR_HAS_SENDFILE -D APR_HAS_MMAP -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled) -D APR_USE_SYSVSEM_SERIALIZE -D APR_USE_PTHREAD_SERIALIZE -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT -D APR_HAS_OTHER_CHILD -D AP_HAVE_RELIABLE_PIPED_LOGS -D DYNAMIC_MODULE_LIMIT=128 -D HTTPD_ROOT="/local0/tmp/new_build/obj/x86_64-linux-glibc2/apache2.2" -D SUEXEC_BIN="/usr/local/covalent/apache2.2/bin/suexec" -D DEFAULT_SCOREBOARD="logs/apache_runtime_status" -D DEFAULT_ERRORLOG="logs/error_log" -D AP_TYPES_CONFIG_FILE="conf/mime.types" -D SERVER_CONFIG_FILE="conf/httpsd.conf" Thanks, Dimitar
