> Hi there, > > I'm looking into strange locking, which happens on WinXP SP2 > SMP machine running 8.1.4 with stats_row_level=on. This is > the only combination (# of cpu and stats_row_level) which has > problem - SMP + stats_row_level. > > The same test runs fine with one cpu (restarted machine with > /numproc=1) disregarding to stats_row_level option. > > Customer's application loads data into database and sometimes > process stopped, no cpu, no io activity. PgAdmin shows > current query is 'COMMIT'. > I tried to attach gdb to postgres and client processes, but > backtrace looks useless (see below). Running vacuum analyze > of this database in separate process cause loading process to > continue ! Weird. > > It's interesting, that there is no problem with 8.2beta1 in > all combinations ! Any idea what changes from 8.1.4 to > 8.2beta1 could affect the problem ?
There is a new implementations of semaphores in 8.2. That could possibly be it. //Magnus ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
