Re: Move PinBuffer and UnpinBuffer to atomics

On Sat, Mar 26, 2016 at 1:26 AM, Alexander Korotkov <
a(dot)korotkov(at)postgrespro(dot)ru> wrote:

> Thank you very much for testing!
> I also got access to 4 x 18 Intel server with 144 threads. I'm going to
> post results of tests on this server in next Monday.
>

I've run pgbench tests on this machine: pgbench -s 1000 -c $clients -j 100
-M prepared -T 300.
See results in the table and chart.

clients master v3 v5
1 11671 12507 12679
2 24650 26005 25010
4 49631 48863 49811
8 96790 96441 99946
10 121275 119928 124100
20 243066 243365 246432
30 359616 342241 357310
40 431375 415310 441619
50 489991 489896 500590
60 538057 636473 554069
70 588659 714426 738535
80 405008 923039 902632
90 295443 1181247 1155918
100 258695 1323125 1325019
110 238842 1393767 1410274
120 226018 1432504 1474982
130 215102 1465459 1503241
140 206415 1470454 1505380
150 197850 1475479 1519908
160 190935 1420915 1484868
170 185835 1438965 1453128
180 182519 1416252 1453098

My conclusions are following:
1) We don't observe any regression in v5 in comparison to master.
2) v5 in most of cases slightly outperforms v3.

I'm going to do some code cleanup of v5 in Monday

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company