From: Tomas Vondra [mailto:tomas.von...@2ndquadrant.com] > On 2/12/19 7:33 AM, Tsunakawa, Takayuki wrote: > > Imai-san confirmed performance improvement with this patch: > > > > https://commitfest.postgresql.org/22/1993/ > > > > Can you quantify the effects? That is, how much slower/faster does it get?
Ugh, sorry, I wrote a wrong URL. The correct page is: https://www.postgresql.org/message-id/0F97FA9ABBDBE54F91744A9B37151A512787EC%40g01jpexmbkw24 The quoted figures re: [v20 + faster-locallock-scan.patch] auto: 9,069 TPS custom: 9,015 TPS [v20] auto: 8,037 TPS custom: 8,933 TPS In the original problematic case, plan_cache_mode = auto (default), we can see about 13% improvement. Regards Takayuki Tsunakawa
