THPDFPageReverseIndexStatistics
捕获页面反向索引的存储、有效性和活动情况的一份快照
声明
THPDFPageReverseIndexStatistics = record
PageCount: Integer;
Capacity: Integer;
ObjectEntryCount: Integer;
PointerEntryCount: Integer;
BuildCount: Int64;
InvalidationCount: Int64;
LookupCount: Int64;
HitCount: Int64;
ProbeCount: Int64;
Valid: boolean;
end;
Capacity是每个开放寻址映射的槽位数ObjectEntryCount和PointerEntryCountreport unique retained keysBuildCountincreases after each lazy rebuild- 有效索引在发生变更后变得过期时,
InvalidationCount会增加 LookupCount、HitCount和ProbeCount是文档实例生命周期内的计数器Valid报告保留的映射是否与当前页表长度和变更代数(mutation generation)一致