Sean Chittenden wrote:
Will more RAM become available to postgresql if I change the
kernel-values mentioned above to half the size?
Yes, it will raise the in-kernel limits so that PostgreSQL can
allocate more RAM for its user-land cache.
You will probably have a better ROI in terms of performance by
increasing the kernel's caching parameters as opposed to PostgreSQL's
cache. You need both, don't get me wrong, but there is lots of
performance to be gained by increasing the amount of caching the
kernel does. -sc
Any generally good rules of thumb you could share? Which kernel caching
are you referring to (ie disk, ...) ?
Thanks!
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