Hi, When I created the conflict between recovery and many read-only transactions in the standby server for test purpose, I found that the keyword "waiting" disappeared from PS display for just a moment even though the conflict had not been resolved yet. This seems strange to me.
This problem happens because ResolveRecoveryConflictWithVirtualXIDs resets PS display for each read-only transactions that recovery waits for. Why do we need to reset that each time even though the conflict has not been resolved yet? The attached patch suppresses such a needless reset. Comments? BTW, ResolveRecoveryConflictWithVirtualXIDs calls pgstat_report_waiting(), which is also needless since the startup process doesn't have the shared memory entry (i.e., MyBEEntry) for pg_stat_activity. The attached patch removes that call. Regards, -- Fujii Masao NIPPON TELEGRAPH AND TELEPHONE CORPORATION NTT Open Source Software Center
ps_display_v1.patch
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