Re: [PERFORM] Performance degradation, index bloat and planner estimates

2010-09-21 Thread Tom Lane
Craig Ringer writes: > If the bloat issue were with relations rather than indexes I'd suspect > free space map issues as you're on 8.3. > http://www.postgresql.org/docs/8.3/interactive/runtime-config-resource.html > My (poor) understanding is that index-only bloat probably won't be an > FSM is

Re: [PERFORM] Performance degradation, index bloat and planner estimates

2010-09-21 Thread Craig Ringer
On 20/09/2010 7:59 PM, Daniele Varrazzo wrote: Does anybody have some information about where the bloat is coming from and what is the best way to get rid of it? Would a vacuum full fix this kind of problem? Is there a way to fix it without taking the system offline? It's hard to know where th

[PERFORM] Performance degradation, index bloat and planner estimates

2010-09-20 Thread Daniele Varrazzo
Hello, we are experiencing some performance degradation on a database where the main table is running towards the 100M record. Together with the slowness of the queries I notice these symptoms: - size bloat of partial indexes - very bad planning estimates I'd appreciate any hint to get a better