1. 数据库大小(pg_database_size) postgres=# select datname from pg_database; datname --- postgres osdbadb template1 template0 mytestdb01 db03 (6 rows) postgres=# select pg_database_size ('db03'),pg_size_pretty(pg_database_size('db03')); pg_database_size | pg_size_pretty ---...
playboy=>selectpg_database_size('playboy');pg_database_size---3637896(1row) 以KB,MB,GB的方式来查看数据库大小 playboy=>selectpg_size_pretty(pg_database_size('playboy'));pg_size_pretty---3553kB(1row) 查看所有数据库的大小 playboy=>selectpg_data...
description: "Name of the database" - size_bytes: usage: "GAUGE" description: "Disk space used by the database" pg_stat_statements: query: "SELECT t2.rolname, t3.datname, queryid, calls,total_time/ 1000 as total_time_seconds, min_time / 1000 as min_time_seconds, max_time / 1000...
playboy=> select pg_database_size('playboy'); //查看playboy数据库的大小 pg_database_size --- 3637896 (1 row) playboy=> select pg_database.datname, pg_database_size(pg_database.datname) AS size from pg_database; //查看所有数据库的大小 datname | size ---+--- postgres | 3621512 ...
pg_database.datname,pg_database_size(pg_database.datname)ASsize from pg_database; 四、查看表大小 --查看表大小 代码语言:javascript 复制 selectpg_relation_size('table_name');--bytes --以KB\MB\GB方式查看表大小 代码语言:javascript 复制 ...
query: "SELECT pg_database.datname, pg_database_size(pg_database.datname) as size_bytes FROM pg_database" master: true cache_seconds: 30 metrics: - datname: usage: "LABEL" description: "Name of the database" - size_bytes:
db_indexes_bloat_size_mb=$(psql -h$inpHost-p$inpPort-U$inpDBUser-d$inpDBName-At << EOF selectround(sum(wastedibytes)/1024/1024) indexes_bloated_mbfrom(SELECTcurrent_database(), schemaname, tablename, iname,ROUND((CASE WHEN iotta=0OR ipages=0THEN0.0ELSE ipages::float/iotta END...
以往我们通过 pg_stat_database 来计算,现在有了 pg_stat_io,对于缓冲区命中率这个指标,计算就更为精确了: Fsync 在事务提交时,我们知道 WAL record 是需要同步落盘的,而脏块是延迟写入的,由 checkpointer、bgwriter 亦或是 backend process,都会参与刷盘,最终的 fsync 由 checkpoint 发起。 因此理想状态下,bac...
Database block size: 8192 Blocks per segment of large relation: 131072 WAL block size: 8192 Bytes per WAL segment: 16777216 Maximum length of identifiers: 64 Maximum columns in an index: 32 Maximum size of a TOAST chunk: 1996 Size of a large-object chunk: 2048 ...
Statistics Collector:负责收集统计信息,用于诸如pg_stat_activity, pg_stat_database等系统视图。 Logging collector (logger):负责将错误消息写入日志文件。Archiver:负责将日志归档。 在内存模型方面,PostgreSQL的内存体系结构可以分为两大类:本地内存区域(Local memory area)和共享内存区域(Shared memory area)。