On 2020/07/01 7:37, Peter Geoghegan wrote: > On Tue, Jun 30, 2020 at 6:40 AM Fujii Masao <masao.fujii@oss.nttdata.com> wrote: >> Ants and Andres suggested to replace the spinlock used in pgss_store() with >> LWLock. I agreed with them and posted the POC patch doing that. But I think >> the patch is an item for v14. The patch may address the reported performance >> issue, but may cause other performance issues in other workloads. We would >> need to measure how the patch affects the performance in various workloads. >> It seems too late to do that at this stage of v13. Thought? > > I agree that it's too late for v13.
Thanks for the comment!
So I pushed the patch and changed default of track_planning to off.
Maybe there can be documented so enabling this option can have a negative impact on performance.
Regards
Pavel
Regards,
-- Fujii Masao Advanced Computing Technology Center Research and Development Headquarters NTT DATA CORPORATION
