[jsdl-wg] Limit Text

[Donal K. Fellows]

The following is my suggested text for the MemoryLimit and PipeSizeLimit
element definitions. The text in [brackets] is non-normative. I have
omitted the text stating what it must be a sub-element of (according to
the principles of allowing the schema to be used as an ontology as well
as a document definition) but if we really want that, it's trivial to
add it.

   MemoryLimit: Definition

     This element is a positive integer that describes the maximum amount
     of physical memory (in bytes) that the job should use when
     executing. It MUST be supported. If this is not present, then it is
     unlimited.

     [This is really the Resident Set Size limit, and systems might
     impose a granularity of a kilobyte.]

   PipeSizeLimit: Definition

     This element is a positive integer that describes the maximum size
     of pipelines (in bytes) created for and by the processing of the
     job. It MUST be supported. If this is not present, then the system
     should use its default value.

     [No system permits arbitrary sized pipe buffers, but their defaults
     are usually entirely acceptable. Systems typically impose a
     granularity of 512 bytes.]

Donal.