one of our services is click counting for on line advertising. We do this by importing Apache log files every five minutes. This results in a lot of insert and delete statements. At the same time our customers shall be able to do on line reporting.

We have a box with
Linux Fedora Core 3, Postgres 7.4.2
Intel(R) Pentium(R) 4 CPU 2.40GHz
2 scsi 76GB disks (15.000RPM, 2ms)

I did put pg_xlog on another file system on other discs.

Still when several users are on line the reporting gets very slow. Queries can take more then 2 min.

I need some ideas how to improve performance in some orders of magnitude. I already thought of a box with the whole database on a ram disc. So really any idea is welcome.


Ulrich Wisser  / System Developer

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