Thank you, Then i'll try something like this for configure: ./configure CFLAGS='-march=opteron -O2 -pipe' AN other question: Are the postgres datafiles (not the dump) platform independ? So is it possible to just copy the datafiles from linux to a windows machine if they are running the same postgres version? Thomas > Thomas Papke wrote: >> 1. i am running a large postgres 8.1.4 database in production. What >> is a good and safe way for an minor update to 8.1.8 (less downdown >> and possible jump back option)? > > Using binary packages, install the new one over the old one, and if you > don't like it, install the old one over the new one. > >> How riskful is an minor update for the data files? > > Not riskful. > >> 2. i am using two dualcore opterons with 8GB memory - if i am using >> the CFLAGS="-O2" option for compile optimization --> is there any >> real performance boost? > > I don't think anyone has ever seriously considered building with > anything less than -O2 for anything but debugging purposes or coping > with buggy compilers on rare architectures. In other words, there > isn't any good reason not to do it. > > -- > Peter Eisentraut > http://developer.postgresql.org/~petere/ > > ---------------------------(end of broadcast)--------------------------- > TIP 1: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your > message can get through to the mailing list cleanly > >
