pg_proctab

通过SQL接口访问操作系统进程表
仓库
markwkm/pg_proctab
https://github.com/markwkm/pg_proctab
源码
pgnodemx-2.0.1.tar.gz
pgnodemx-2.0.1.tar.gz

概览

扩展包名版本分类许可证语言
pgnodemx2.0.1STATBSD-3-ClauseC
ID扩展名BinLibLoadCreateTrustReloc模式
6440pgnodemx否是是是否是-
6450pg_proctab否是否是否是-
相关扩展system_stats pg_stat_kcache pgmeminfo

Bundled with pgnodemx package/source 2.0.1 for PostgreSQL 14-18; this package ships pg_proctab as a compatibility stub backed by pgnodemx.

版本

类型仓库版本PG 大版本包名依赖
EXTPIGSTY2.0.11817161514pgnodemx-
RPMPIGSTY2.0.11817161514pgnodemx_$v-
DEBPGDG2.0.11817161514postgresql-$v-pgnodemx-
OS / PGPG18PG17PG16PG15PG14
el8.x86_64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
el8.aarch64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
el9.x86_64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
el9.aarch64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
el10.x86_64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
el10.aarch64PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1PIGSTY 2.0.1
d12.x86_64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
d12.aarch64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
d13.x86_64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
d13.aarch64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u22.x86_64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u22.aarch64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u24.x86_64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u24.aarch64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u26.x86_64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1
u26.aarch64PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1PGDG 2.0.1

构建

您可以使用 pig build 命令构建 pgnodemx 扩展的 RPM / DEB 包：

BASH 
pig build pkg pgnodemx         # 构建 RPM / DEB 包

安装

您可以直接安装 pgnodemx 扩展包的预置二进制包，首先确保 PGDG 和 PIGSTY 仓库已经添加并启用：

BASH 
pig repo add pgsql -u          # 添加仓库并更新缓存

使用 pig 或者是 apt/yum/dnf 安装扩展：

安装
BASH 
pig install pgnodemx;          # 当前活跃 PG 版本安装
pig
BASH 
pig ext install -y pgnodemx -v 18  # PG 18
pig ext install -y pgnodemx -v 17  # PG 17
pig ext install -y pgnodemx -v 16  # PG 16
pig ext install -y pgnodemx -v 15  # PG 15
pig ext install -y pgnodemx -v 14  # PG 14
dnf
BASH 
dnf install -y pgnodemx_18       # PG 18
dnf install -y pgnodemx_17       # PG 17
dnf install -y pgnodemx_16       # PG 16
dnf install -y pgnodemx_15       # PG 15
dnf install -y pgnodemx_14       # PG 14
apt
BASH 
apt install -y postgresql-18-pgnodemx   # PG 18
apt install -y postgresql-17-pgnodemx   # PG 17
apt install -y postgresql-16-pgnodemx   # PG 16
apt install -y postgresql-15-pgnodemx   # PG 15
apt install -y postgresql-14-pgnodemx   # PG 14

创建扩展：

SQL 
CREATE EXTENSION pg_proctab;

用法

pg_proctab: 从 PostgreSQL 访问操作系统进程表

pg_proctab 允许在 PostgreSQL 内部通过 SQL 函数查询操作系统的进程、CPU、内存、磁盘和负载统计信息。

函数

进程信息 (pg_proctab())：

SQL 
-- 所有 PostgreSQL 进程信息
SELECT pid, comm, state, utime, stime, vsize, rss, reads, writes
FROM pg_proctab();

-- 与 pg_stat_activity 关联获取每个查询的资源使用情况
SELECT a.pid, a.query, p.utime, p.stime, p.vsize, p.rss
FROM pg_stat_activity a
JOIN pg_proctab() p ON a.pid = p.pid;

返回每个进程的信息：pid、comm、fullcomm、state、ppid、utime、stime、priority、nice、num_threads、vsize、rss、processor、uid、username、rchar、wchar、reads、writes 等。

CPU 时间 (pg_cputime())：

SQL 
SELECT "user", nice, system, idle, iowait FROM pg_cputime();

负载均值 (pg_loadavg())：

SQL 
SELECT load1, load5, load15, last_pid FROM pg_loadavg();

内存使用 (pg_memusage())：

SQL 
SELECT memused, memfree, memshared, membuffers, memcached,
       swapused, swapfree, swapcached
FROM pg_memusage();

磁盘使用 (pg_diskusage())：

SQL 
SELECT devname, reads_completed, writes_completed,
       sectors_read, sectors_written
FROM pg_diskusage();

最后修改 2026-08-12 · extension update 2026-08-12 (7a2fdbbd)