MI_PARTITION_COMMIT

The MI_PARTITION_COMMIT structure (formally _MI_PARTITION_COMMIT) is here thought to exist only as a subdivision of the MI_PARTITION, specifically as the latter’s Commit member.

Variability

Though the MI_PARTITION_COMMIT structure is an implementation detail and can be expected to change between builds, it has not changed nearly as much as might be thought from taking its changes of size as a rough measure:

What’s hidden here is that the only change thus far to the structure is for one new member. It was cache-aligned when added for Version 1511 and then a slight redefinition (removal of volatile) for Version 2004 removed the cache-alignment.

Layout

The sizes in the preceding table and the offsets, names and types in the next are from type information in public symbol files for the kernel.

ULONG_PTR PeakCommitment;

ULONG_PTR TotalCommitLimitMaximum;

LONG volatile Popups [2];

ULONG_PTR LowCommitThreshold;

ULONG_PTR HighCommitThreshold;

KSPIN_LOCK EventLock;

ULONG_PTR SystemCommitReserve;

ULONG_PTR volatile OverCommit;

ULONG_PTR OverCommit;