阿里云云数据库RDS PostgreSQL使用过程中,可能会遇到CPU使用率过高甚至达到100%的情况。本文将介绍造成该状况的常见原因以及解决方法,并通过CPU使用率为100%的典型场景,来分析引起该状况的排查及其相应的解决方案。 解决方案 CPU使用率到达100%,首先检查是不是业务高峰活跃连接陡增,而数据库预留的资源不足。需要查看问...
# 一般情况使用默认值-1不用做限制 # in kB, or -1 for no limit # - Kernel Resource Usage - # max_files_per_process = 1000 # 设置每个服务器子进程允许同时打开的最大文件数目。默认是 1000 个文件。 # (需要重启生效) # 第三方插件模块,多个加载时使用","进行分割常用如下: shared_preload_...
'HIGH:MEDIUM:+3DES:!aNULL' # 允许的 SSL 加密算法 #ssl_prefer_server_ciphers = on # 是否优先使用服务器端加密算法 #ssl_ecdh_curve = 'prime256v1' # ECDH 曲线#ssl_min_protocol_version = 'TLSv1.2' # 最小的 SSL 协议版本 #ssl_max_protocol_version = '' # 最大的 SSL 协议版本 #ssl...
默认值是 4.0。 #cpu_tuple_cost = 0.01 # 设置规划器对一次查询中处理每一行的代价估计。默认值是 0.01 #cpu_index_tuple_cost = 0.005 # 设置规划器对一次索引扫描中处理每一个索引项的代价估计。默认值是 0.005 #cpu_operator_cost = 0.0025 # 设置规划器对于一次查询中处理每个操作符或函数的代价估计。...
Solved: Hi, In customer's system, the CPU usage is 100% because of the processes of PostgreSQL. If restart the postgresql service , then the cpu
Use Case: High CPU Caused by Too Many Short-Lived Connections In this section, we will walk you through a real-world use case where the Troubleshooting Guides can be instrumental in diagnosing and resolving a high CPU usage issue caused by too many short-lived c...
Buckets: 65536 Batches: 256 Memory Usage: 3840kB -> Parallel Seq Scanonorders (cost=0.00..313722.45rows=3750045 width=20) (actualtime=0.029..995.948rows=3000000 loops=5) PlanningTime: 0.977 ms ExecutionTime: 7923.770 ms 这里每个worker帮助构建一个共享的hash表。
It's rather hard to find a CPU benchmark that is more representative of database performance more easily than by just using a database to do something processor-intensive. You can easily build some quick, PostgreSQL-oriented CPU tests using the database psql client and its \timing feature, ...
排查CPU 使用率过高问题 排查内存使用率高的问题 排查IO 使用率过高问题 排查autovacuum 使用pg_repack 扩展进行完全清理 排查和识别运行缓慢的查询 对连接进行故障排除 优化查询统计信息 批量数据上传的最佳做法 pg_dump 和 restore 的最佳做法 教程 操作指南 ...
High CPU usage when using SSH connection. "permission denied for view geometry_columns" error occurred when opening PostgreSQL table. Minor bug fixes and improvements. To upgrade, please visit our Customer Center. Apr 17 2023 Navicat for PostgreSQL (Windows) version 16.1.12 Bug-fixes: Query Build...