# [[guc:autovacuum_multixact_freeze_max_age]]

> Multixact age that forces anti-wraparound vacuum.
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Multixact age that forces anti-wraparound vacuum.

[Official PostgreSQL 18 parameter reference](https://www.postgresql.org/docs/18/runtime-config.html#GUC-AUTOVACUUM-MULTIXACT-FREEZE-MAX-AGE)

## Referenced by wait events {#wait-events}

- [IPC/MultixactCreation](/ipc/multixact-creation/)
- [LWLock/MultiXactGen](/lwlock/multi-xact-gen/)
- [LWLock/MultiXactMemberBuffer](/lwlock/multi-xact-member-buffer/)
- [LWLock/MultiXactMemberSLRU](/lwlock/multi-xact-member-slru/)
- [LWLock/MultiXactOffsetBuffer](/lwlock/multi-xact-offset-buffer/)
- [LWLock/MultiXactOffsetSLRU](/lwlock/multi-xact-offset-slru/)
- [LWLock/MultiXactTruncation](/lwlock/multi-xact-truncation/)