大家好!
我们目前有以下与共享内存相关的参数:
postgres
shared_buffers = 7GB
max_connections = 1 500
max_locks_per_transaction = 1 024
max_prepared_transactions = 0 (not set)
系统
SHMALL = 2 097 152
SHMMAX = 17 670 512 640
SHMMNI = 4096
RAM 数量为 24 693 176k
我们需要将max_connections增加到 3 000。当我们尝试这样做时,我们得到了一个错误
[1-1] FATAL: could not create shared memory segment: No space left on device
[2-1] DETAIL: Failed system call was shmget(key=5432001, size=8964661248, 03600)
[3-1] HINT: This error does *not* mean that you have run out of disk space.
It occurs either if all available shared memory IDs have been taken, in which
case you need to raise the SHMMNI parameter in your kernel, or because the
system's overall limit for shared memory has been reached. If you cannot
increase the shared memory limit, reduce PostgreSQL's shared memory request
(currently 8964661248 bytes), perhaps by reducing shared_buffers or
max_connections.
The PostgreSQL documentation contains more information about shared memory
configuration.
提示建议增加SHMMNI内核参数,但我不确定要添加多少 :) 另外,我相信所有这些参数都以某种方式相关,所以我们是否需要相应地更改任何其他参数?
提前致谢,
亚历山大