WSE - Sizing Recommendations

Thursday 18th August, 2005
First thing to check is the version of WSE you are using.

There were a large number of performance improvements that went into WSE version 2.5

From your description of slow performance responces and increased disk activity it sounds like the amount of RAM may not be enough.

The specifications for WSE 2.5 recommend

Hardware requirements
Intel-based systems
· Processor: Dual-processor 2.0 GHz Intel Pentium 4 or equivalent processor
· Physical memory: 2 GB minimum (per processor)
· Disk space: 10 GB minimum

From what I understand this would be 2GB RAM PER PROCESSOR.   However,  some deployments I am aware of use 4GB RAM per processor.

Another potential bottleneck for performance as you increase numbers of users is the database.   By default WSE is installed using the cloudscape database.
For improved performance it is recommended in the documentation to switch to a RDBMs.

The following databases are supported for the Windows  and Linux environments:
· DB2 UDB Express V8.2.
· Microsoft SQL Server Enterprise 2000 service pack 3 and service pack 3a.

If you do have WSE 2.0 installed I would recommend cleaning off the machine and fresh install of WSE 2.5 to save time in getting up and running.

Some additional technotes which relate to performance.


Title:                Workplace Services Express: Search Issues with Cloudscape Db Containing Large Number of Names
Product:        Workplace Services Express  >  Performance  >  Versions 2.5, 2.0
Platform:        Platform Independent
Date:        29/06/2005
Doc Number:        1207211

Title:                Workplace Services Express 2.5: Contents of Release Notes
Product:        Workplace Services Express  >  Not Applicable  >  Version 2.5
Platform:        Platform Independent
Date:        28/06/2005
Doc Number:        1210448

If upgrading from 2.0 to 2.5


Title:                Upgrade Central: Planning Your Upgrade to IBM Workplace Services Express 2.5
Product:        Workplace Services Express  >  Configuration  >  Version 2.5
Platform:        Platform Independent
Date:        27/07/2005
Doc Number:        1212866

Title:                Workplace Services Express 2.5: Contents of Release Notes
Product:        Workplace Services Express  >  Not Applicable  >  Version 2.5
Platform:        Platform Independent
Date:        28/06/2005
Doc Number:        1210448

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