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Date: Wed, 23 Jan 2013 14:25:36 -0800 (PST)
From: Hermes Flying <flyinghermes@yahoo.com>
Reply-To: Hermes Flying <flyinghermes@yahoo.com>
Subject: Re: Fw: Can not understand how maxThreads of Connectors works
To: Tomcat Users List <users@tomcat.apache.org>
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Hi,=0ASo is there an explanation for this? All I am interested is make sure=
 that after a limit, clients attempted to connect are stopped based on my c=
onfiguration on maxThreads and accept count.=0ABut I can not figure out how=
 this works.=0A=0A=0A=0A=0A=0A=0A________________________________=0A From: =
Hermes Flying <flyinghermes@yahoo.com>=0ATo: Tomcat Users List <users@tomca=
t.apache.org> =0ASent: Monday, January 21, 2013 6:17 PM=0ASubject: Re: Fw: =
Can not understand how maxThreads of Connectors works=0A =0AThe web applica=
tion works.I can not see any issue. What does this mean?=0A=0A=0A=0A_______=
_________________________=0AFrom: Mark Thomas <markt@apache.org>=0ATo: Tomc=
at Users List <users@tomcat.apache.org> =0ASent: Monday, January 21, 2013 1=
1:06 AM=0ASubject: Re: Fw: Can not understand how maxThreads of Connectors =
works=0A=0AOn 21/01/2013 07:07, Hermes Flying wrote:=0A> =0A> Hi,=0A> Is th=
ere any update on this? I don't see any problem setting maxThreads=3D0=0A=
=0AAnd if you try making a request with a Tomcat instance that uses that=0A=
configuration?=0A=0AMark=0A=0A=0A> =0A> Thank you=0A> =0A> =0A> ----- Forwa=
rded Message -----=0A> From: Hermes Flying <flyinghermes@yahoo.com>=0A> To:=
 Tomcat Users List <users@tomcat.apache.org> =0A> Sent: Friday, January 18,=
 2013 8:55 AM=0A> Subject: Re: Can not understand how maxThreads of Connect=
ors works=0A>=A0 =0A> =0A> Hi Chris,=0A> Tried with this simple server.xml =
and maxThreads=3D0 but I did not see any kind of errors.Attached the catali=
na logs=0A> =0A> <?xml version=3D'1.0' encoding=3D'utf-8'?>=0A> <Server por=
t=3D"8005" shutdown=3D"SHUTDOWN">=0A> =0A>=A0=A0 <!--APR library loader. Do=
cumentation at /docs/apr.html -->=0A>=A0=A0 <Listener className=3D"org.apac=
he.catalina.core.AprLifecycleListener" SSLEngine=3D"on" />=0A>=A0=A0 <!--In=
itialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-=
howto.html -->=0A>=A0=A0 <Listener className=3D"org.apache.catalina.core.Ja=
sperListener" />=0A>=A0=A0 <!-- Prevent memory leaks due to use of particul=
ar java/javax APIs-->=0A>=A0=A0 <Listener className=3D"org.apache.catalina.=
core.JreMemoryLeakPreventionListener" />=0A>=A0=A0 <!-- JMX Support for the=
 Tomcat server.=0A>=A0 Documentation at /docs/non-existent.html -->=0A>=A0=
=A0 <Listener className=3D"org.apache.catalina.mbeans.ServerLifecycleListen=
er" />=0A>=A0=A0 <Listener className=3D"org.apache.catalina.mbeans.GlobalRe=
sourcesLifecycleListener" />=0A> =0A>=A0=A0 <!-- Global JNDI resources=0A>=
=A0 =A0 =A0 =A0 Documentation at /docs/jndi-resources-howto.html=0A>=A0=A0 =
-->=0A>=A0=A0 <GlobalNamingResources>=0A>=A0 =A0=A0 <!-- Editable user data=
base that can also be used by=0A>=A0 =A0 =A0 =A0 =A0 UserDatabaseRealm to a=
uthenticate users=0A>=A0 =A0=A0 -->=0A>=A0 =A0=A0 <Resource name=3D"UserDat=
abase" auth=3D"Container"=0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 type=3D"org.apa=
che.catalina.UserDatabase"=0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 description=3D=
"User database that can be updated and=0A>=A0 saved"=0A>=A0 =A0 =A0 =A0 =A0=
 =A0 =A0=A0 factory=3D"org.apache.catalina.users.MemoryUserDatabaseFactory"=
=0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 pathname=3D"conf/tomcat-users.xml" />=0A=
>=A0=A0 </GlobalNamingResources>=0A> =0A>=A0=A0 <!-- A "Service" is a colle=
ction of one or more "Connectors" that share=0A>=A0 =A0 =A0 =A0 a single "C=
ontainer" Note:=A0 A "Service" is not itself a "Container", =0A>=A0 =A0 =A0=
 =A0 so you may not define subcomponents such as "Valves" at this level.=0A=
>=A0 =A0 =A0 =A0 Documentation at /docs/config/service.html=0A>=A0 =A0 -->=
=0A>=A0=A0 <Service name=3D"Catalina">=0A>=A0 =0A>=A0 =A0=A0 <!--The connec=
tors can use a shared executor, you can define one or more named thread poo=
ls-->=0A>=A0 =A0=A0 <!--=0A>=A0 =A0 =0A>=A0 <Executor name=3D"tomcatThreadP=
ool" namePrefix=3D"catalina-exec-" =0A>=A0 =A0 =A0 =A0=A0 maxThreads=3D"150=
" minSpareThreads=3D"4"/>=0A>=A0 =A0=A0 -->=0A>=A0 =A0 =0A>=A0 =A0 =0A>=A0 =
=A0=A0 <!-- A "Connector" represents an endpoint by which requests are rece=
ived=0A>=A0 =A0 =A0 =A0 =A0 and responses are returned. Documentation at :=
=0A>=A0 =A0 =A0 =A0 =A0 Java HTTP Connector: /docs/config/http.html (blocki=
ng & non-blocking)=0A>=A0 =A0 =A0 =A0 =A0 Java AJP=A0 Connector: /docs/conf=
ig/ajp.html=0A>=A0 =A0 =A0 =A0 =A0 APR (HTTP/AJP) Connector: /docs/apr.html=
=0A>=A0 =A0 =A0 =A0 =A0 Define a non-SSL HTTP/1.1 Connector on port 8080=0A=
>=A0 =A0=A0 -->=0A>=A0 =A0=A0 <Connector port=3D"8080" maxThreads=3D"0" acc=
eptCount=3D"1"=0A>=A0 protocol=3D"HTTP/1.1" =0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 connectionTimeout=3D"20000" =0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 redire=
ctPort=3D"8443" />=0A> =0A>=A0 =A0=A0 <!-- Define an AJP 1.3 Connector on p=
ort 8009 -->=0A>=A0 =A0=A0 <Connector port=3D"8009" protocol=3D"AJP/1.3" re=
directPort=3D"8443" />=0A> =0A> =0A>=A0 =A0=A0 <!-- An Engine represents th=
e entry point (within Catalina) that processes=0A>=A0 =A0 =A0 =A0 =A0 every=
 request.=A0 The Engine implementation for Tomcat stand alone=0A>=A0 =A0 =
=A0 =A0 =A0 analyzes the HTTP headers included with the request, and passes=
 them=0A>=A0 =A0 =A0 =A0 =A0 on to the appropriate Host (virtual host).=0A>=
=A0 =A0 =A0 =A0 =A0 Documentation at /docs/config/engine.html=0A>=A0 -->=0A=
> =0A>=A0 =A0=A0 <!-- You should set jvmRoute to support load-balancing via=
 AJP ie :=0A>=A0 =A0=A0 <Engine name=3D"Catalina" defaultHost=3D"localhost"=
 jvmRoute=3D"jvm1">=A0 =A0 =A0 =A0 =0A>=A0 =A0=A0 --> =0A>=A0 =A0=A0 <Engin=
e name=3D"Catalina" defaultHost=3D"localhost">=0A> =0A> =0A>=A0 =A0 =A0=A0 =
<!-- This Realm uses the UserDatabase configured in the global JNDI=0A>=A0 =
=A0 =A0 =A0 =A0 =A0 resources under the key "UserDatabase".=A0 Any edits=0A=
>=A0 =A0 =A0 =A0 =A0 =A0 that are performed against this UserDatabase are i=
mmediately=0A>=A0 =A0 =A0 =A0 =A0 =A0 available for use by the Realm.=A0 --=
>=0A>=A0 =A0 =A0=A0 <Realm=0A>=A0 className=3D"org.apache.catalina.realm.Us=
erDatabaseRealm"=0A>=A0 =A0 =A0 =A0 =A0 =A0 =A0 resourceName=3D"UserDatabas=
e"/>=0A> =0A>=A0 =A0 =A0=A0 <!-- Define the default virtual host=0A>=A0 =A0=
 =A0 =A0 =A0 =A0 Note: XML Schema validation will not work with Xerces 2.2.=
=0A>=A0 =A0 =A0 =A0 -->=0A>=A0 =A0 =A0=A0 <Host name=3D"localhost"=A0 appBa=
se=3D"webapps"=0A>=A0 =A0 =A0 =A0 =A0 =A0=A0 unpackWARs=3D"true" autoDeploy=
=3D"true"=0A>=A0 =A0 =A0 =A0 =A0 =A0=A0 xmlValidation=3D"false" xmlNamespac=
eAware=3D"false">=0A> =0A> =0A>=A0 =A0 =A0=A0 </Host>=0A>=A0 =A0=A0 </Engin=
e>=0A>=A0=A0 </Service>=0A> </Server>=0A> =0A> =0A> =0A> =0A> =0A> =0A> =0A=
> ________________________________=0A>=A0 From: Christopher Schultz <chris@=
christopherschultz.net>=0A> To: Tomcat Users List <users@tomcat.apache.org>=
 =0A> Sent: Thursday, January 17, 2013 6:57 PM=0A> Subject: Re: Can not und=
erstand how maxThreads of Connectors works=0A>=A0 =0A> -----BEGIN PGP SIGNE=
D MESSAGE-----=0A> Hash: SHA256=0A> =0A> Andr=E9,=0A> =0A> On 1/17/13 3:32 =
AM, Andr=E9 Warnier wrote:=0A>> Quite a few messages ago, I asked the OP if=
 he could copy/paste=0A>> his server.xml.=0A> =0A> Yes. Getting information=
 from the OP seems to be difficult.=0A> =0A>> The reason was that if his co=
nfig uses an Executor, then I believe=0A>> the Threads settings in the Conn=
ectors don't really matter, do they=0A>> ?=0A> =0A> Correct: setting execut=
or=3D"someExecutor" means that any=0A> executor-related settings on the <Co=
nnector> will be ignored in favor=0A> of those set in the <Connector>.=0A> =
=0A> - -chris=0A> -----BEGIN PGP SIGNATURE-----=0A> Version: GnuPG/MacGPG2 =
v2.0.17 (Darwin)=0A> Comment: GPGTools - http://gpgtools.org=0A> Comment: U=
sing GnuPG with Thunderbird - http://www.enigmail.net/=0A> =0A> iEYEAREIAAY=
FAlD4LX4ACgkQ9CaO5/Lv0PAzegCgtxrX5Yx2V0UlEiDI1hK/vK+H=0A> u20AmwWQz6+LToA3u=
PSSb8V1+kdPMY3N=0A> =3D9fQb=0A> -----END PGP=0A>=A0 SIGNATURE-----=0A> =0A>=
 ---------------------------------------------------------------------=0A> =
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