Skip to main content

ATG Search - search engine tuning settings

In this blog, I am going to list the best tuning settings for ATG Search engine.

The AESoapConfig.xml, AESoapWaspConfig.xml  and AEConfig.xml are the xmls referred below and you can find it @  <ATG_DIR>\<Searchx.x>\SearchEngine\<operating_system>\bin\ folder.

(1)  Make sure that the AESoapConfig.xml's rwTimeout is less than or equal to routing's readTimeoutMs. You could find the routing's readTimeoutMs @ atg\search\routing\SearchEngineService component.

              rwTimeout is the  length of time in seconds to wait before a read or write operation times out on an active connection. The number can be decreased to improve performance. However, a value that is too low could cause slow connections to be prematurely closed.

(2)  Adjust the number of engine threads to match the number of CPUs available to the engine. Note that the minimal value for maxThreads and maxSpareThreads is 2, which applies to running with 1 CPU.  However, it is recommended to run with more than one CPU.
      a) Set MaxThreads in AEConfig.xml to number of CPU's
      b) Set maxSpareThreads in AESoapWaspConfig.xml to number of CPU's

             maxThreads is the number of requests you can process simultaneously, and this generally should be the number of CPU's available to the engine. If this is higher than the CPUs, the engine will bog down, with slower response times.
             maxSpareThreads is the number of  worker threads to process requests simultaneously, generally this should be the same as MaxThreads.

(3)  Disable the the keep-alive/connection reuse setting
       a) Set reuseCount=0
   
            reuseCount is the number of requests that may be accepted using the same connection. The number can be increased to reduce the frequency of opening new connections and improve performance. However, a value that is too high could prevent new connections from being accepted. A value of 0 disables connection reuse. This applies to HTTP 1.1 only.

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

ATG - basic concepts of ATG

This blog is for the ATG beginners to get some basic overview about ATG. I just given the ATG concepts as a list of numbered points for the ease of understanding. 1. At the framework level, ATG is a               java based application platform for hosting web-based applications, as well as RMI accessible business components,               with an ORM layer,               a component container,               an MVC framework,               and a set of tag libraries for JSP. 2. Art Technology Group(ATG)'s Dynamo Application Server (DAS) is a Java EE compliant application server. DAS is no longer actively developed as ATG recommends using other Java EE applications servers for its products such as BEA WebLogic, JBoss or IBM WebSphere. 3. Prior to ATG 2007, JHTML was used instead of JSP for view purpose. J...
4 comments
Read more

ATG Search - how to configure multiple language search

Here I am going to explain the steps involved in configuring the multi-language ATG Search if your site support multiple language. I have given the different steps in indexing and search flows. Indexing flow : You could configure different search projects for different locales to support parallel search indexing for each locale. You could setup search environment for the search projects so that the indexing host is different for the two projects. Configure the LocaleVariantProducer @ ProductCatalogOutputConfig to specify the locale for the new language. Include the language dictionaries you need in Search Admin on the Search Projects which can be used for indexing and searching in multiple languages. Specify the locales @ \atg\search\config\LanguageDimensionService so that you could configure the search configurations for each language. When you create the search configuration tree, specify the "Contents vary by" as Language, to configure the search configurations li...
Post a Comment
Read more

Tax Credit Statement ( Form 26AS )

Read more about Tax filing @  http://tips4ufromsony.blogspot.com/2011/07/income-tax-process-and-e-filing.html  . Form 26AS is a consolidated tax statement issued under Rule 31 AB of Income Tax Rules to PAN holders. This statement, with respect to a financial year, will include details of: Tax deducted at source (TDS). Tax collected at source (TCS). Advance tax/self assessment tax/regular assessment tax etc., deposited in the bank by the taxpayers (PAN holders). Paid refund received during the financial year. Form 26AS will be prepared only with respect to Financial Year 05-06 onwards. To view the Form26AS , log-in to https://incometaxindiaefiling.gov.in and click on ‘View Tax Credit Statement (From 26AS)’  in ‘My Account’. Read more about Form 26AS  @ http://www.incometaxindia.gov.in/26ASTaxCreditStatement.asp http://www.tin-nsdl.com/form26as.asp
Post a Comment
Read more

ATG search installation and search engine log files

Here I would like to explain how your ATG search folder structure looks like after you do the ATG search installation and also about the search engine log files. To get the ATG search, you need to install the ATGSearch<version>Windows.exe after you do the ATG installation. When you install ATG search, the generated folders include an OS dependant folder. In the below screen shot, you could see the "i686-win32-vc71" folder and this is generated since the ATG search ins installed in a windows machine. The ATG search engine is actually an exe file inside this "i686-win32-vc71" folder. Below screen shot give you an idea about the "atgsearch.exe", which is the search engine application. This search engine application (atgsearch.exe) is started by a remote launcher call from the BCC search administration UI.  The log files like "atgsearch_20120106112413_568.log" are the search engine log files where you could see the engine ...
2 comments
Read more

ATG Search and startRemoteLauncher

If the search engine application is running in a separate box than the ATG CA-BCC deployed server, the search engine is invoked through a remoteLauncher running in these boxes. Means, a remoteLauncher needs to run in the host where SearchEngine is installed remotely to start the search engine. You could find the startRemoteLauncher.sh @ ATG/ATG2007.1/Search2007.1/SearchAdmin/bin/startRemoteLauncher.sh Start remoteLauncher using the command   ./startremotelauncher.sh –p <RMI Launcher service Port > & The Launcher Service Port on the host machine can be found in BCC @ Search Administration>Projects > Search Project: gmri_search_en_CA > Environments > Host Machine: > Advanced Settings. If the startRemoteLanucher reports a BindingException , then you need to find the process that is using the launchServicePort. For that run the netstat command like :   netstat -an |grep 10880 Then inorder to identify the process t...
Post a Comment
Read more