GS_STAT_SESSION_CUGS_STAT_SESSION_CU queries the CU hit rate of running sessions on each openGauss node. This data about a session is cleared when you exit this session or restart openGauss.Table 1 GS_STAT_SESSION_CU columnsNameTypeDescriptionmem_hitintegerNumber of memory hitshdd_sync_readintegerNumber of synchronous hard disk readshdd_asyn_readintegerNumber of asynchronous hard disk reads