Monday Feb 15, 2010

Web Server 7.0 appears to be consuming more CPU than Web Server 6.1

The increase in memory usage could be due to the 'auto-tuning' 
    functionality that was introduced in Web Server 7.0U2. (But not yet documented)
    This feature will set some of the servers parameters based on number of CPU's, 
    file descriptors, etc of the actual machines.
    It is possible to see what these are being auto-tuned to by setting the 
    log level to finest, and restarting each server.

    They should see differences between the two boxes.

    The one best thing that can be done is run perfdump to see how much of 
    the set resources are actually being used.  Once you have those figures, you
    can then manually set these values in the server.xml file, which will 
    override any auto-tuning values.

    Web Server 7.0 will definitely require more memory than 6.0, 
    basically because it's architecture is very different.


    So in recap you would want to start by setting the log level to finest 
    on both servers, enabling perfump and restarting them. Then gathering 
    some perfdump data as the memory usage reaches its high levels.  This should 
    allow some thoughts for settingl initial values you might want to set 
    these parameters to.

How to establish NTLM based authentication to a Microsoft based system such as Sharepoint or Outlook Express with Proxy Server 4.0

    Firstly, Ensure that you are running with Proxy Server Version 4.0.13 or higher
(if available). A bug was noted in earlier releases which limited the functionality
of operation of the proxy server within an NTLM authentication scheme.

The bug id is: 6897536

The bug says that the proxy should present the following in the request header:

A proxy that correctly honors client to server
authentication integrity will supply the "Proxy-support: Session-
Based-Authentication" HTTP header to the client in HTTP responses
from the proxy.


Additionally, in order to configure the proxy to work with NTLM authentication,
it will ALSO be necessary to ensure the following configurations are set:

- This feature is disabled by default, and needs to be enabled using
the "PairedConnections" boolean flag in magnus.conf. Set this to TRUE

- The proxy will issue a "Proxy-support: ..." header only if the server's response headers contain a "WWW-Authenticate: NTLM" header.
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Gregory Bedigian

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