PostgreSQL 8.1.1がリリースされました。
http://www.postgresql.org/ のLATEST RELEASESからダウンロードできます。
Outer Join、CHECK文の不具合、sub selectの不具合などが修正されているそうです。他にも色々修正されているので不具合でお困りの方は試してみてはいかがでしょうか?
Athlon64 3200+/3GB/SATA HDD/1GbE/MomongaLinux x86_64開発版 にPostgreSQL 8.1.1をインストールしてPentiumDのマシンからpgbenchを実行した結果 （スケールファクタ 10、TCP接続設定以外はデフォルト)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000
starting vacuum…end.
transaction type: TPC-B (sort of)
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 282.428887 (including connections establishing)
tps = 282.667102 (excluding connections establishing)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000 -S
starting vacuum…end.
transaction type: SELECT only
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 4822.840200 (including connections establishing)
tps = 4892.360725 (excluding connections establishing)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000 -N
starting vacuum…end.
transaction type: Update only accounts
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 301.807334 (including connections establishing)
tps = 302.361132 (excluding connections establishing)
share_buffers=20000 (デフォルトは1000)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000
starting vacuum…end.
transaction type: TPC-B (sort of)
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 329.863325 (including connections establishing)
tps = 330.396068 (excluding connections establishing)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000 -S
starting vacuum…end.
transaction type: SELECT only
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 5771.386160 (including connections establishing)
tps = 5875.513153 (excluding connections establishing)
[yohgaki@dev php-4.4.1]$ pgbench -p 5432 -h 192.168.100.120 -U yohgaki -c 10 -t 1000 -N
starting vacuum…end.
transaction type: Update only accounts
scaling factor: 10
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 397.720948 (including connections establishing)
tps = 398.210553 (excluding connections establishing)
