如何查看PostgreSQL的checkpoint 活动

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作者：高健@博客园 luckyjackgao@gmail.com

 

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 luckyjackgao@gmail.com

回到上一级页面：PostgreSQL索引页

磨砺技术珠矶，践行数据之道，追求卓越价值