Darya.zelenina: Created page with "The '''modified page list''' is the part of secondary page cache that contains pages allocated to the process that have been modified. It is controlle..."

2019-07-03T06:20:24Z

Created page with "The '''modified page list''' is the part of secondary page cache that contains pages allocated to the process that have been modified. It is controlle..."

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The '''modified page list''' is the part of [[Secondary Page Cache|secondary page cache]] that contains pages allocated to the process that have been modified. It is controlled with the MPW* system parameters:

* [[MPW_HILIMIT]] sets the upper limit for the modified page list.
* [[MPW_IOLIMIT]] specifies the number of outstanding I/Os to the modified-page writer.
* [[MPW_LOLIMIT]] sets the lower limit for the modified page list.
* [[MPW_LOWAITLIMIT]] specifies the threshold at which processes in the miscellaneous wait state MPWBUSY are allowed to resume.
* [[MPW_PRIO]] sets the priority of I/O transfers initiated by the modified page writer.
* [[MPW_THRESH]] sets a lower bound of pages that must exist on the modified-page list before the [[Swapper|swapper]] writes this list to acquire free pages.
* [[MPW_WAITLIMIT]] sets the number of pages on the modified page list that causes a process to wait until the next time the modified page writer writes the modified list.
* [[MPW_WRTCLUSTER]] sets the number of pages to be written during one I/O operation from the modified-page list to the [[Page File|page file]] or a section file.

=See also=
* [[Free Page List|Free page list]]

Modified Page List - Revision history

Darya.zelenina: Created page with "The '''modified page list''' is the part of secondary page cache that contains pages allocated to the process that have been modified. It is controlle..."