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Open Mic call: Portal V6.1 Performance Tuning - Wednesday, September 23, 2009
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| | | Abstract | | IBM Support Engineers hosted a Support Technical Exchange Open Mic call about IBM WebSphere Portal V6.1 performance tuning on Wednesday, September 23, 2009 at 10:00 a.m. EDT (2:00 GMT). | | | |  | | | Content | IBM Support Engineers hosted a Support Technical Exchange Open Mic call about IBM WebSphere Portal V6.1 performance tuning on Wednesday, September 23, 2009 at 10:00 a.m. EDT (2:00 GMT).
Recording details: MP3 file, file size 6.53 MB using FTP
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Questions and Answers from the Open Mic call:
More questions and answers are posted to the forum and can be found at the following link (scroll down to see the questions and answers): http://www.ibm.com/developerworks/forums/thread.jspa?threadID=274638
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| Time | Question asked | | 0:00:01 | General Introduction | | 0:01:35 | Technical Introduction | | 0:04:55 | What are the caches involved and how can they be tuned for optimal performance? What tools does the IBM team use for performance tuning? | | 0:08:16 | We are doing our performance testing on our intranet applications on AIX and the tuning guide suggests 50 for the web container thread pool. We are already at 250. Are there any suggestions for setting the thread pool? | | 0:15:33 | We are currently on Portal V6 and are planning to go forward with an intranet site, extranet site, and public web site. In a few months, we will be providing intranet service to a few 100 customers and we will be adding hundreds of pages within a short time. What are some performance considerations for structuring the pages and making copies of pages? We are also using the local rendering portlet on regular portal pages. Is there any impact if we have a large number of virtual portals on a single server? | | 0:22:10 | Could you discuss some of the web 2.0 performance testing your team has done and any challenges you faced with debugging? | | 0:26:24 | We have a centralized Portal deployment that must service geographic locations in other countries that may have bandwidth issue. Can we have multiple HTTP servers connecting back to a single Portal server? For example, in AP can we have one HTTP server that pushes out closer to users and leverage caching to that server and connects to a Portal server in the U.S. that also has an HTTP server for the U.S? | | 0:33:15 | Earlier you mentioned that the connection pool should be 2:1 for the primary Portal database and the JCR should be 2.5:1. What is the specific database that should be 2:1? Should we keep the defaults on the feedback and Likeminds databases? On page 11 of the Tuning Guide are the VMM context pooling recommendations. We tried to set the initial pool size but Portal won't start. Are you aware of any issues related to those settings? | | 0:36:30 | Currently we have a V6.1 server that is completely anonymous with about 1000 users, heavy use of WCM, 10000+ content items, and a couple of thousand pages. Things have been performing well for anonymous users but we're going start requiring users to be authenticated for each browser session. Are there any performance impacts? Most of the load testing utilities simulate user loads. Is there a way to generate authenticated users? We have servlet caching enabled and customized pages. How will this change with authenticated sessions? | | 0:43:06 | We are supporting an internet application on Portal V6.0.1.5 and WCM using the JCR database. In the application server, the JVM heap is reaching 99%. Is WCM causing the problem or is there specific tuning that must be done for the application server? | | 0:46:38 | Is there a recommended proxy configuration for Apache instead of using a specialized proxy device for caching? | | 0:49:19 | We are using the remote rendering portlet to retrieve WCM content from our V6.1 environment. The content is returning quickly from the WCM environment to the Portal environment but the authoring portlet data takes 30-40 seconds to load. Is there any way to increase the performance in the authoring environment? Is there one document to which we can refer all settings for remote rendering and remote authoring? | | 0:53:28 | To improve the response to users, we cache some information from the database. Now objects are reaching 100 MB and fragmentation is increasing in the JVM. No matter how much memory we allocate for the heap size, the fragments are becoming large. We are not able to allocate more objects on the JVM heap and the portlets are no longer able to perform. Is there any recommendation to improve this performance? | | 0:56:30 | Closing Remarks | | | | 0:57:07 | End of call |
Visit the Lotus support Open Mic tech exchange landing page for a list of calls and events. | | | | | | | | |
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| Product categories: |
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| | Software | |
| | Organizational Productivity, Portals & Collaboration | |
| | Portals | |
| | WebSphere Portal | |
| | Installation & Configuration | |
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| Operating system(s): |
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AIX, HP-UX, Linux, Solaris, Windows, i5/OS, z/OS
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| Software version: |
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6.1
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| Reference #: |
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1398723
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| IBM Group: |
| | Software Group |
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| Modified date: |
| | 2009-10-16 |
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