MPW_HILIMIT

   MPW_HILIMIT sets an upper limit for the modified-page list. When
   the list accumulates the number of pages specified by this limit,
   writing of the list begins. The pages that are written are then
   transferred to the free-page list.

   If MPW_HILIMIT is too low, excessive page faulting can occur from
   the page file. If it is too high, too many physical pages can be
   consumed by the modified-page list.

   If you increase MPW_HILIMIT, you might also need to increase
   MPW_WAITLIMIT. Note that if MPW_WAITLIMIT is less than
   MPW_HILIMIT, a system deadlock occurs. The values for the two
   parameters are usually equal.

   MPW_HILIMIT has the AUTOGEN and GEN attributes.