Bernhard Schrader wrote: > Am Donnerstag, den 27.01.2011, 09:18 -0600 schrieb Kevin Grittner: > > Bernhard Schrader <bernhard.schrader@xxxxxxxxxxxx> wrote: > > > > > what maybe is also interesting, if i start the database manually i > > > have a huge waiting IO of 23% for a time of maybe 2-5 minutes, i > > > think it is because of the fragmentation of the tables. > > > > > > is the shutdown so slow because of the waiting io? but why can i > > > stop it as user root without problems... > > > > How do you "stop it as user root", exactly? If you kill PostgreSQL > > too abruptly, the recovery could easily run for several minutes with > > a lot of I/O while it recovers. > > > > Taking pg_upgrade out of the picture for a minute -- how long do > > shutdowns and startups normally take you? > > > > -Kevin > > > well, i tested it now with user postgres, the same command as the > program, and it didnt shut down the server, the log gives me the notice > that it want to shut down but it doesnt happen, maybe this stop method > is to "friendly". i tested it with the already running db, so there were > no waiting io or anything.. with option "-m fast" it stops without > problems. > > normally i do it as user root with /etc/init.d/postgresql-8.3 (stop| > start) and the shutdown takes about 5-10 seconds, the start the same but > with some waiting io, which takes up to 5 minutes of bad perfomance. I suggest you take pg_upgrade out of the testing and find out why you are having startup/shutdown delays. Once they are fixed, pg_upgrade should work fine. My initial reaction is that something is wrong with your system, either the I/O or the way it is being shutdown by the script. I would start to look in the script and do some pg_ctl tests starting/stopping the server. -- Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
