So, maybe just a note on which parameters to increase if you have more
RAM/CPU/I/O bandwidth in the big server example?
Yes, that would be great. Actually I prefer rules of thumb and examples for each extreme. If possible a little note WHY the parameter should be tweaked, and what effects it will have. For example, more note's like Josh's below would be a big help...
Yes. Take sort_mem for example:
OLTP_SM 1024
OLTP_LM 2048
OLAP_SM 4096
OLAP_LM 16384
WWW_SM 512
WWW_LM 1024
Workstation 1024
The basic idea is:
More RAM => more sort_mem
More concurrent queries => less sort_mem
Larger data sets => more sort_mem
Lots of grouped aggregates => more sort_mem
--
[ Christian Fowler
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