Re: AW: Slide (2.1) - tuning. Make it faster and more stable.

Hi Thorsten,

<Connector URIEncoding="UTF-8" acceptCount="100" address="tomcat1" 
connectionTimeout="20000" debug="0" disableUploadTimeout="true" 
enableLookups="false" maxHttpHeaderSize="8192" maxSpareThreads="75" 
maxThreads="150" minSpareThreads="25" port="8080" redirectPort="8443"/>
and
<Connector URIEncoding="UTF-8" port="8009" address="tomcat1" 
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />
the http-connector is only for testing. We only use the AJP-connector.

Yours
 Arne

Thorsten Saile schrieb:
> Hello Arne,
>
> thanks for youre usefull informations. I will test it in the next week. Can you also give me your Connector parameters from the server.xml file? This settings are very important. The Tomcat default Values for acceptCount and thread are to high. We have reduced it to the follow:
>
> <Connector URIEncoding="UTF-8" acceptCount="40" connectionTimeout="20000" description="non-SSL HTTP/1.1" disableUploadTimeout="true" enableLookups="true" maxHttpHeaderSize="8192" maxSpareThreads="24" maxThreads="40" minSpareThreads="10" port="11121" protocol="HTTP/11" redirectPort="11123" />
>     
> Thanks and a nice Weekend
> Thorsten
>
> -----Ursprüngliche Nachricht-----
> Von: Arne v.Irmer [mailto:[email protected]]
> Gesendet: Dienstag, 7. August 2007 10:27
> An: Thorsten Saile; Slide Users Mailing List
> Betreff: Slide (2.1) - tuning. Make it faster and more stable.
>
>
> Hi Thorsten,
> we use Tomcat 5.5.23 and java version 1.5.0_10 and slide 2.1 with a 
> Tx-filestore using openSuSE 10.2 . Now everything works fine (~2000 User a day / ~10 Gb Transfer / ~20000 hits). But in the beginning we had the 
> same problems.
>
> I try to give some hints to increase the stability of slide:
> 1. You have to patch the slide-kernel. There is a bug with concurrent 
> access. In the file 
> jakarta-slide-server-src-2.1/src/share/org/apache/slide/store/ExtendedStore.java 
> at line 149 an ordenary HashMap is used. You have to change line 149 to:
>     private Map suspendedLocks = Collections.synchronizedMap(new HashMap());
> To build the project use a build.properties
> # ----- Compile Control Flags -----
> compile.debug=on
> compile.deprecation=off
> compile.optimize=on
> compile.target=1.4
> build.compiler=modern
> After that just change the slide-kernel-2.1.jar in the distro of slide 
> that you are currently using. (Look at 
> http://jakarta.apache.org/slide/installation.html)
> 2. Next turn off the "sequential-mode" in the Domain.xml. This causes 
> slide to wait with the next transaction until the current is done. We 
> had some dead lock with that. To turn it of open your Domain.xml search 
> for <parameter name="sequential-mode"> and replace it with
>            <parameter name="sequential-mode">off</parameter>
> 3. If you use clustering always and ever use the udp protocol (its 
> default). Look (linux) with from time to time with lsof -p PID how many 
> files the slide-tomcat has open.
> 4. Use Jconsole to monitor memory and thread management of the tomcat. 
> To do so start tomcat with the option -Dcom.sun.management.jmxremote (no needed for java 1.6).  After that start jconsole (an X-Server is 
> required) and connect to your tomcat. In the case of a problem you are 
> now able to only restart slide in a running tomcat: Go to the MBean-tab 
> and navigate to Catalina->WebModule->//tomcat/->none->none then use tab 
> Operations and press the Button reload.
> For more information of the jconsole look at 
> http://java.sun.com/j2se/1.5.0/docs/guide/management/jconsole.html
> 5. To make umlauts work use UTF-8 everywhere and use a tomcat 5.5 and 
> slide 2.1.
> 6. Use apache2 with mod_jk and the ajp protocol. You than are able to 
> use slide within a load-balance -worker. It is easy to configure. But 
> look 3. ! And configure the clustercacherefresher properly. If you make 
> a mistake your store will be lost.
>
> Thorsten, I hope this will help. More things may be done, but I don't 
> remember.
>
> Is anyone out there who has a problem with my hints or has other good 
> slide-tunings. Make a post. I'm curious
>
> Yours
>  Arne
>
>