on Windows doesn’t respond well to a high value for shared_buffers. This thread
explains a little, but not definitively. Also, I found that setting the value to greater than 1GB (on a Windows Server 2008 x64 box with 8GB RAM) failed with this error in the event log:
%t FATAL: could not create shared memory segment: 8
%t DETAIL: Failed system call was MapViewOfFileEx.
So, for now I’m going with a conservative 32MB setting.
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