Question

我有 postgresql 9.6 ，它在ubuntu服务器16.04上运行，在AWS上有122gb RAM，320gb SSD，18 vCPU。我想知道根据这些资源我需要在postgresql.config文件中更改哪些参数才能获得高性能？如何强制postgresql尽可能多地在内存中加载数据？

Answer 1

为了快速入门，您可以使用pgtune util或web alternative http://pgtune.leopard.in.ua。我们假设您编写了Web应用程序：

# WARNING
# this tool not being optimal 
# for very high memory systems

max_connections = 200
shared_buffers = 31232MB
effective_cache_size = 93696MB
work_mem = 159907kB
maintenance_work_mem = 2GB
min_wal_size = 1GB
max_wal_size = 2GB
checkpoint_completion_target = 0.7
wal_buffers = 16MB
default_statistics_target = 100

通过更改配置参数来调整PostgreSQL

1 个答案: