注意：只有快照计数器（snapshotcounter）类型的性能指标才能计算差值。

Note: Only performance metrics that are of type snapshot counter have deltas calculated.

youdao

注意：只有快照计数器（snapshotcounter）类型的性能指标才能计算差值。

Note: Only performance metrics that are of type snapshot counter have deltas calculated.

youdao