Ok. Cheers. I will do some more testing on my heavy PostGIS queries which often takes hours to complete.
Thanks. Andreas 2011/3/7 Kenneth Marshall <k...@rice.edu> > On Mon, Mar 07, 2011 at 03:17:05PM +0100, Andreas For? Tollefsen wrote: > > Thanks, Ken. > > > > It seems like the tip to turn off synchronous_commit did the trick: > > > > /usr/lib/postgresql/8.4/bin/pgbench -T 60 test1 > > starting vacuum...end. > > transaction type: TPC-B (sort of) > > scaling factor: 1 > > query mode: simple > > number of clients: 1 > > duration: 60 s > > number of transactions actually processed: 86048 > > tps = 1434.123199 (including connections establishing) > > tps = 1434.183362 (excluding connections establishing) > > > > Is this acceptable compared to others when considering my setup? > > > > Cheers, > > Andreas > > > > > These are typical results for synchronous_commit off. The caveat > is you must be able to handle loosing transactions if you have a > database crash, but your database is still intact. This differs > from turning fsync off in which a crash means you would need to > restore from a backup. > > Cheers, > Ken >
