# [[metric:oldest_multixact_age]]

> 仍需保留的最老 multixact 年龄。
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仍需保留的最老 multixact 年龄。

## 被哪些等待事件引用 {#wait-events}

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