PGSQL优化后出错could not create semaphores: No space

服务器32G内存空间

 

参数优化

$ vi postgresql.conf

shared_buffers = 3072MB

max_connections = 4000

work_mem = 4MB

effective_cache_size = 4GB

maintenance_work_mem = 512MB 

wal_buffers = 256

 

具体优化参数解释参考：https://blog.youkuaiyun.com/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 protocol

FATAL:  could not create semaphores: No space left on device

DETAIL:  Failed system call was semget(5432124, 17, 03600).

HINT:  This error does *not* mean that you have run out of disk space.  It occurs when either the system limit for the maximum number of semaphore sets (SEMMNI), or the system wide maximum number of semaphores (SEMMNS), would be exceeded.  You need to raise the respective kernel parameter.