Configuring Arbortext Publishing Engine > Setting Configuration Parameters > Configuring Sub-process Pools > The maxBusyInterval Attribute
  
The maxBusyInterval Attribute
Specifying maxBusyInterval sets the maximum time in seconds that an Arbortext PE sub-process is assumed to be busy processing a request. This attribute allows Arbortext Publishing Engine to terminate an Arbortext PE sub-process that is no longer accessible due to an error condition. The default value is 1800 seconds, or thirty minutes. Setting the value to 0 means there is no limit.
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It's possible that an Arbortext PE sub-process could be terminated while it's processing a lengthy job. When you set maxBusyInterval, estimate a value that's higher than the time it would take to process the most extensive request you might submit.