Help Center/ GaussDB/ Developer Guide(Distributed_2.x)/ Schemas/ DBE_PERF Schema/ Cache and I/O/ GLOBAL_STAT_SESSION_CU

Updated on 2023-10-23 GMT+08:00

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GLOBAL_STAT_SESSION_CU

GLOBAL_STAT_SESSION_CU displays CU hits of running sessions on each node in the cluster. This data about a session is cleared when you exit this session After the cluster is restarted, the statistics are also cleared.

**Table 1** GLOBAL_STAT_SESSION_CU columns
Name	Type	Description
node_name1	text	Node name
mem_hit	integer	Number of memory hits
hdd_sync_read	integer	Number of hard disk synchronous reads
hdd_asyn_read	integer	Number of hard disk asynchronous reads

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