Hi Dilip, Amit, Thank you for the patch!
I test the patch on the master HEAD(9796f455) and it works fine. * make installcheck-world: passed * walsender process continues to use 100% of the CPU 1core when TRUNCATE 1000 partition: 1s or less ** before patch : 230s There is "ReorderBufferAddInvalidation" in reorderbuffer.h, but I don't think it's needed. src/include/replication/reorderbuffer.h +void ReorderBufferAddInvalidation(ReorderBuffer *, TransactionId, XLogRecPtr lsn, + int nmsgs, SharedInvalidationMessage *msgs); If possible, I'd like to improve it even before PG13, but I recognize that it's difficult because it uses a PG14 or later mechanism... Best Regards, -- Keisuke Kuroda NTT Software Innovation Center keisuke.kuroda.3...@gmail.com