| From: | Yura Sokolov <y(dot)sokolov(at)postgrespro(dot)ru> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, michail(dot)nikolaev(at)gmail(dot)com, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Andres Freund <andres(at)anarazel(dot)de>, Simon Riggs <simon(dot)riggs(at)enterprisedb(dot)com> |
| Subject: | Re: BufferAlloc: don't take two simultaneous locks |
| Date: | 2022-06-28 11:26:54 |
| Message-ID: | 66ee8a52160c228e6a19a6ee06f3aa986e716de5.camel@postgrespro.ru |
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| Lists: | pgsql-hackers |
В Вт, 28/06/2022 в 14:13 +0300, Yura Sokolov пишет:
> Tests:
> - tests done on 2 socket Xeon 5220 2.20GHz with turbo bust disabled
> (ie max frequency is 2.20GHz)
Forgot to mention:
- this time it was Centos7.9.2009 (Core) with Linux mn10 3.10.0-1160.el7.x86_64
Perhaps older kernel describes poor master's performance on 2 sockets
compared to my previous results (when this server had Linux 5.10.103-1 Debian).
Or there is degradation in PostgreSQL's master branch between.
I'll try to check today.
regards
---
Yura Sokolov
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