Hello,
I want to increase the max_connections of PostgreSQL from around 40 to
around 100. For this I need to change the Shared Memory and Semaphores
settings.
I followed this link -
http://www.postgresql.org/docs/8.1/interactive/kernel-resources.html#SYSVIPC
and used the proposed values in a test installation FreeBSD 5.5,
PostgreSQL 8.x, with 96 MB RAM (a VMware guest) -
I added -
kern.ipc.shmall=32768
kern.ipc.shmmax=134217728
kern.ipc.semmap=256
to /etc/sysctl.conf
kern.ipc.semmni=256
kern.ipc.semmns=512
kern.ipc.semmnu=256
to /boot/loader.conf
And I changed max_connections = 40 to 100 in postgresql.conf.
Rebooted and all works OK.
Now I want to do the same on a production machine FreeBSD 5.4,
PostgreSQL 8.x, with 2 GB RAM.
Are there any dangers I should have in mind?
Thank you,
Iv
PS I know that the values can be compiled into the kernel, but I am not
that good yet.
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