Re: Beginner optimization questions, esp. regarding Tsearch2

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The relevant portion of my sysctl.conf file looks like this:

kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536

I understood it was a good idea to set shmmax to half of available
memory (2GB in this case).  I assume that I need to set shared_buffers
slightly lower than 2GB for postgresql to start successfully.

Carl

On 8/15/06, Jim C. Nasby <jnasby@xxxxxxxxxxxxx> wrote:
On Tue, Aug 15, 2006 at 12:47:54PM -0600, Carl Youngblood wrote:
> I tried setting it to 2GB and postgres wouldn't start.  Didn't
> investigate in much greater detail as to why it wouldn't start, but
> after switching it back to 1GB it started fine.

Most likely because you didn't set the kernel's shared memory settings
high enough.


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