| From: | Keisuke Kuroda <keisuke(dot)kuroda(dot)3862(at)gmail(dot)com> |
|---|---|
| To: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
| Cc: | Dilip Kumar <dilipbalaut(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Logical replication CPU-bound with TRUNCATE/DROP/CREATE many tables |
| Date: | 2020-10-01 02:51:54 |
| Message-ID: | CANDwggLd7s-qRPTxQFoN6vCvnh5Hj_DM4OT8GnvGN5BxMptzWA@mail.gmail.com |
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| Lists: | pgsql-hackers |
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(dot)kuroda(dot)3862(at)gmail(dot)com
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