effective_cache_size:此参数告诉优化器内核中可用于缓存的内存量。建议设置为系统总内存的一半左右。 sql ALTER SYSTEM SET effective_cache_size = '4GB'; maintenance_work_mem:此参数设置维护操作(如VACUUM、CREATE INDEX等)使用的内存量。对于大型数据库,可以适当增加此值以加快维护操作的速度。 sql ALTER SYST...
work_mem 用于提高内部排序操作的,设置值为1MB effective_cache_size 设置查询可用的最大内存,推荐设置为内存的1/2 实际上,设置了相关参数以后,实际的效率没有得到提升,说明在这个时候,数据库本身的性能是已经到了比较好的性能。 总结 在尝试优化的过程,已经从多方面进行了设置。总结出来,在遇见查询速度慢的时候,...
effective_cache_size = 4GB maintenance_work_mem = 512MB wal_buffers = 256 具体优化参数解释参考:https://blog.csdn.net/zhousenshan/article/details/70233820 启动服务出错 $ pg_ctl -D /data/pg_data start server starting $ LOG: could not create IPv6 socket: Address family not supported by pro...
effective_cache_size = 4GB maintenance_work_mem = 512MB wal_buffers = 256 具体优化参数解释参考:https://blog.csdn.net/zhousenshan/article/details/70233820 启动服务出错 $ pg_ctl -D /data/pg_data start server starting $ LOG: could not create IPv6 socket: Address family not supported by pro...
effective_cache_size = 4GB maintenance_work_mem = 512MB wal_buffers = 256 具体优化参数解释参考:https://blog.csdn.net/zhousenshan/article/details/70233820 启动服务出错 $ pg_ctl -D /data/pg_data start server starting $ LOG: could not create IPv6 socket: Address family not supported by pro...
effective_cache_size = 4GB4-->32random_page_cost = 4.0wal_buffers = -1 重启验证pg_ctl restart -D /pg_data ---华为云20241118参数(2332测试) max_connections= 1536 shared_buffers= 8192MB work_mem = 8MB maintenance_work_mem = 2048MB lock_timeout = 0 idle_in_transaction_session_timeout...
work_mem 用于提高内部排序操作的,设置值为1MB effective_cache_size 设置查询可用的最大内存,推荐设置为内存的1/2 实际上,设置了相关参数以后,实际的效率没有得到提升,说明在这个时候,数据库本身的性能是已经到了比较好的性能。 总结 在尝试优化的过程,已经从多方面进行了设置。总结出来,在遇见...
checkpoint_completion_target = 0.9# checkpoint target duration, 0.0 - 1.0effective_cache_size = 40GB log_destination ='csvlog'# Valid values are combinations oflogging_collector = on# Enable capturing of stderr and csvloglog_directory ='pg_log'# directory where log files are written,log_file...
数据库用于缓存数据的内存大小。该参数默认值很低(考虑不同的系统平台),需要调整。不宜太大,很多实践表明,大于1/3的内存会降低性能。 3,effective_cache_size 50%-75% of total memory This is a guideline for how much memory you expect to be available in the OS and PostgreSQL buffer caches, not ...
max_wal_size = 256GB random_page_cost = 1.0 effective_cache_size = 512GB constraint_exclusion = on log_destination = 'csvlog' logging_collector = on log_checkpoints = on log_connections = on log_disconnections = on log_error_verbosity = verbose ...