Rainer Jung <rainer.jung <at> kippdata.de> writes:
>
> Yes, but the log message is talking about the min size. The default min
> size is size/2, but we changed it between 1.2.19 and 1.2.20 to
> (size+1)/2. So for prefork the min size was 0 until 1.2.19 and is 1
> starting with 1.2.20.
So I tried connection_pool_minsize=1 - no discernable effect on error rate
>
> >
> > I've tried tuning all the other suggested parameters without a noticable
effect
> > on the rate of these info messages (2000-3000/hour)
> > I tried: maxActive 40, maxIdle 5, maxWait 3000
> >
> > no discernable difference in error rate.
> > Maybe I need to modify them with bigger deltas to see a difference?
> > Is there a way to tell which parameter would have the most impact?
>
> If those are for a DataSource, they have no relation to your mod_jk
> messages.
Yes, maxActive 40, maxIdle 5, maxWait 3000 are all in the context.xml file in
the datasource definition - so these would not affect mod_jk messages - I
get that now!
> > I tried connectionTimeout = 600000 (10 times the default of 60 seconds) - no
> > reduction in error rate
>
> Are you sure, you put it into the correct connector?
>
I put it into the server.xml AJP connector - actually I'm not sure now if I had
the value in quotes:
<Server port="13135" shutdown="SHUTDOWN">
<Service name="Catalina">
<Connector port="13138" />
<Connector port="13139" protocol="AJP/1.3" connectionTimeout="600000" />
<Engine name="Catalina" defaultHost="localhost"
jvmRoute="tomcat-publicweb-01">
<Logger className="org.apache.catalina.logger.FileLogger" />
<Host name="localhost" appBase="webapps" />
</Engine>
</Service>
</Server>
> Please post your version numbers, platform details, log example and
> relevant apache and tomcat configuration items.
Web servers: Solaris 9 x86, Apache 2.0.52, mod_jk 1.2.20
App servers: Solaris 9 Sparc, tomcat 5.0
worker definition:
worker.tomcat-publicweb-01.type=ajp13
worker.tomcat-publicweb-01.host=irt-app-01
worker.tomcat-publicweb-01.port=13139
worker.tomcat-publicweb-01.lbfactor=50
worker.tomcat-publicweb-01.cachesize=10
worker.tomcat-publicweb-01.cache_timeout=600
worker.tomcat-publicweb-01.socket_keepalive=1
worker.tomcat-publicweb-01.retries=2
worker.tomcat-publicweb-01.socket_timeout=30
worker.tomcat-publicweb-01.connect_timeout=2000
worker.tomcat-publicweb-01.prepost_timeout=5000
worker.tomcat-publicweb-01.reply_timeout=300000
mod_jk errors:
ajp_send_request::jk_ajp_common.c (1201): (tomcat-publicweb-01) error sending
request. Will try another pooled connection
ajp_send_request::jk_ajp_common.c (1227): (tomcat-publicweb-01) all endpoints
are disconnected
ajp_send_request::jk_ajp_common.c (1230): (tomcat-publicweb-01) increase the
backend idle connection timeout or the connection_pool_minsize
ajp_service::jk_ajp_common.c (1916): (tomcat-publicweb-01) sending request to
tomcat failed, recoverable operation attempt=1
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