以前有整理過一些關於pg監控的工具，其中有介紹到pg_top,以下是一個簡單的學習使用
環境准備
基於虛擬機部署的，centos8
- 安裝pg
sudo dnf install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
sudo dnf -qy module disable postgresql
sudo dnf install -y postgresql13-server
sudo /usr/pgsql-13/bin/postgresql-13-setup initdb
sudo systemctl enable postgresql-13
sudo systemctl start postgresql-13
- 修改配置（注意需要重啟服務）
為了測試方便，去掉安全文件 /var/lib/pgsql/13/data/pg_hba.conf
修改為:
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all peer
# IPv4 local connections:
host all all 127.0.0.1/32 trust
# IPv6 local connections:
host all all ::1/128 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local replication all peer
host replication all 127.0.0.1/32 scram-sha-256
host replication all ::1/128 scram-sha-256
- 安裝pg_top
直接使用dnf安裝就可以了
dnf install -y pg_top
- 壓測工具安裝
壓測基於sysbench
dnf install -y sysbench
試用
- 運行pg_top
pg_top -U postgres -h 127.0.0.1
- 壓測
sysbench \
--db-driver=pgsql \
--pgsql-host=127.0.0.1 \
--pgsql-port=5432 \
--pgsql-user=postgres \
--pgsql-db=postgres \
--oltp-table-size=10000 \
--rand-init=on \
--threads=10 \
--time=120 \
--events=0 \
--report-interval=10 \
--percentile=99 \
/usr/share/sysbench/tests/include/oltp_legacy/oltp.lua \
prepare
sysbench \
--db-driver=pgsql \
--pgsql-host=127.0.0.1 \
--pgsql-port=5432 \
--pgsql-user=postgres \
--pgsql-db=postgres \
--oltp-table-size=10000 \
--threads=10 \
--time=120 \
--events=0 \
--report-interval=10 \
--percentile=99 \
/usr/share/sysbench/tests/include/oltp_legacy/oltp.lua \
run
sysbench \
--db-driver=pgsql \
--pgsql-host=127.0.0.1 \
--pgsql-port=5432 \
--pgsql-user=postgres \
--pgsql-db=postgres \
--oltp-table-size=10000 \
--threads=10 \
--time=120 \
--events=0 \
--report-interval=10 \
--percentile=99 \
/usr/share/sysbench/tests/include/oltp_legacy/oltp.lua \
cleanup
- 效果
