如何查看PostgreSQL的checkpoint 活动

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作者:高健@博客园 [email protected]

 

参考:http://blog.2ndquadrant.com/measuring_postgresql_checkpoin/

执行前:

select pg_stat_reset(); select pg_stat_reset_shared('bgwriter');

待测试程序执行完毕后:

SELECT total_checkpoints, seconds_since_start / total_checkpoints / 60 AS minutes_between_checkpoints FROM (SELECT EXTRACT(EPOCH FROM (now() - pg_postmaster_start_time())) AS seconds_since_start (checkpoints_timed+checkpoints_req) AS total_checkpoints, FROM pg_stat_bgwriter ) AS sub;

 

作者:高健@博客园 [email protected]

回到上一级页面:PostgreSQL基础知识与基本操作索引页    回到顶级页面:PostgreSQL索引页

磨砺技术珠矶,践行数据之道,追求卓越价值  

 

 

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