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Posted to users@tomcat.apache.org by Anthony Biacco <ab...@handll.com> on 2016/05/26 20:19:15 UTC
minSpareThreads for AJP connector
I have this property set under 8.0.35, but it only hits the value I set
when i make that many requests.
Should it not allocate threads of the value I set on startup?
Thanks,
-Tony
Re: minSpareThreads for AJP connector
Posted by Anthony Biacco <ab...@handll.com>.
On Tue, May 31, 2016 at 11:44 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Anthony,
>
> On 5/27/16 3:54 PM, Anthony Biacco wrote:
> > On Fri, May 27, 2016 at 7:34 AM, Christopher Schultz <
> > chris@christopherschultz.net> wrote:
> >
> > Tony,
> >
> > On 5/26/16 4:22 PM, Anthony Biacco wrote:
> >>>> On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco
> >>>> <ab...@handll.com> wrote:
> >>>>
> >>>>> I have this property set under 8.0.35, but it only hits the
> >>>>> value I set when i make that many requests. Should it not
> >>>>> allocate threads of the value I set on startup?
> >>>>>
> >>>>>
> >>>> btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
> >
> > Can you post your complete Connector configuration?
> >
> >
> >> Sure..
> >
> >> <Connector port="8009"
> >> protocol="org.apache.coyote.ajp.AjpNioProtocol" maxThreads="400"
> >> backlog="25" maxPostSize="4194304" enableLookups="false"
> >> connectionTimeout="120000" keepAliveTimeout="10000"
> >> redirectPort="8443" acceptorThreadCount="2"
> >> pollerThreadCount="2" processorCache="400" minSpareThreads="25"
> >> useComet="false" />
>
> You should:
>
> 1. Use an <Executor> instead of specifying your threading config in
> <Connector>
> 2. Set prestartminSpareThreads="true" on your <Executor>
>
> I think you'll get the behavior you are expecting.
>
>
i'll try that out. thanks chris
-Tony
> - -chris
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Re: minSpareThreads for AJP connector
Posted by Anthony Biacco <ab...@handll.com>.
On Tue, May 31, 2016 at 11:44 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Anthony,
>
> On 5/27/16 3:54 PM, Anthony Biacco wrote:
> > On Fri, May 27, 2016 at 7:34 AM, Christopher Schultz <
> > chris@christopherschultz.net> wrote:
> >
> > Tony,
> >
> > On 5/26/16 4:22 PM, Anthony Biacco wrote:
> >>>> On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco
> >>>> <ab...@handll.com> wrote:
> >>>>
> >>>>> I have this property set under 8.0.35, but it only hits the
> >>>>> value I set when i make that many requests. Should it not
> >>>>> allocate threads of the value I set on startup?
> >>>>>
> >>>>>
> >>>> btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
> >
> > Can you post your complete Connector configuration?
> >
> >
> >> Sure..
> >
> >> <Connector port="8009"
> >> protocol="org.apache.coyote.ajp.AjpNioProtocol" maxThreads="400"
> >> backlog="25" maxPostSize="4194304" enableLookups="false"
> >> connectionTimeout="120000" keepAliveTimeout="10000"
> >> redirectPort="8443" acceptorThreadCount="2"
> >> pollerThreadCount="2" processorCache="400" minSpareThreads="25"
> >> useComet="false" />
>
> You should:
>
> 1. Use an <Executor> instead of specifying your threading config in
> <Connector>
> 2. Set prestartminSpareThreads="true" on your <Executor>
>
> I think you'll get the behavior you are expecting.
>
>
So this worked well, except now, under my consistent load, the threads in
the executor don't time out after their set idle time (maxIdleTime="60000").
If i run a load test, they do after the test finishes, so i'm assuming it's
FIFO based.
If it is, then my threads will likely never idle out. Maybe we should have
an option to make this LIFO?
-Tony
> - -chris
> -----BEGIN PGP SIGNATURE-----
> Comment: GPGTools - http://gpgtools.org
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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> -----END PGP SIGNATURE-----
>
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
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Re: minSpareThreads for AJP connector
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Anthony,
On 5/27/16 3:54 PM, Anthony Biacco wrote:
> On Fri, May 27, 2016 at 7:34 AM, Christopher Schultz <
> chris@christopherschultz.net> wrote:
>
> Tony,
>
> On 5/26/16 4:22 PM, Anthony Biacco wrote:
>>>> On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco
>>>> <ab...@handll.com> wrote:
>>>>
>>>>> I have this property set under 8.0.35, but it only hits the
>>>>> value I set when i make that many requests. Should it not
>>>>> allocate threads of the value I set on startup?
>>>>>
>>>>>
>>>> btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
>
> Can you post your complete Connector configuration?
>
>
>> Sure..
>
>> <Connector port="8009"
>> protocol="org.apache.coyote.ajp.AjpNioProtocol" maxThreads="400"
>> backlog="25" maxPostSize="4194304" enableLookups="false"
>> connectionTimeout="120000" keepAliveTimeout="10000"
>> redirectPort="8443" acceptorThreadCount="2"
>> pollerThreadCount="2" processorCache="400" minSpareThreads="25"
>> useComet="false" />
You should:
1. Use an <Executor> instead of specifying your threading config in
<Connector>
2. Set prestartminSpareThreads="true" on your <Executor>
I think you'll get the behavior you are expecting.
- -chris
-----BEGIN PGP SIGNATURE-----
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=NNCM
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Re: minSpareThreads for AJP connector
Posted by Anthony Biacco <ab...@handll.com>.
On Fri, May 27, 2016 at 7:34 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Tony,
>
> On 5/26/16 4:22 PM, Anthony Biacco wrote:
> > On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco
> > <ab...@handll.com> wrote:
> >
> >> I have this property set under 8.0.35, but it only hits the value
> >> I set when i make that many requests. Should it not allocate
> >> threads of the value I set on startup?
> >>
> >>
> > btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
>
> Can you post your complete Connector configuration?
>
>
Sure..
<Connector port="8009"
protocol="org.apache.coyote.ajp.AjpNioProtocol"
maxThreads="400" backlog="25" maxPostSize="4194304"
enableLookups="false" connectionTimeout="120000"
keepAliveTimeout="10000"
redirectPort="8443" acceptorThreadCount="2"
pollerThreadCount="2"
processorCache="400" minSpareThreads="25"
useComet="false" />
> How are you testing (applying load)? How are you measuring the number
> of allocated threads?
>
>
1 request at a time with apache ab->apache->mod_proxy_ajp/balancer->tomcat,
then checking JMX
(get=Catalina:type=ThreadPool,name="ajp-nio-8009"&att=currentThreadCount)
it increases +1 with every request, then when i get to 25, it'll stay there
(that part is right).
is it maybe that tomcat won't open a thread without a connection
(mod_proxy_ajp) attached to it first??
If it helps, members in my mod_proxy_ajp config look like this:
BalancerMember ajp://app-01.local:8009 route=app-01 loadfactor=1 max=200
acquire=2000 connectiontimeout=1500ms disablereuse=off keepalive=off
ping=1500ms timeout=30
retry=60 ttl=120 flushpackets=on
-Tony
> - -chris
> -----BEGIN PGP SIGNATURE-----
> Comment: GPGTools - http://gpgtools.org
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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>
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Re: minSpareThreads for AJP connector
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Tony,
On 5/26/16 4:22 PM, Anthony Biacco wrote:
> On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco
> <ab...@handll.com> wrote:
>
>> I have this property set under 8.0.35, but it only hits the value
>> I set when i make that many requests. Should it not allocate
>> threads of the value I set on startup?
>>
>>
> btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
Can you post your complete Connector configuration?
How are you testing (applying load)? How are you measuring the number
of allocated threads?
- -chris
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Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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Re: minSpareThreads for AJP connector
Posted by Anthony Biacco <ab...@handll.com>.
On Thu, May 26, 2016 at 2:19 PM, Anthony Biacco <ab...@handll.com> wrote:
> I have this property set under 8.0.35, but it only hits the value I set
> when i make that many requests.
> Should it not allocate threads of the value I set on startup?
>
>
btw, i'm using org.apache.coyote.ajp.AjpNioProtocol
-Tony