"Ravindra Guravannavar" <ravindrag@xxxxxxxxx> writes: > I am trying to cluster an index on the TPC-H lineitem table having > 6 million records. The index is on a single column l_suppkey. Postgres > (8.1.3) is not able to finish the operation even after 2 hours! The disk > is being accessed continuously and CPU is at 2%. Postmaster is > started with the following options: > -B 2000 --work-mem=10240 --maintenance_work_mem=10240 --wal_buffers=32 > --checkpoint_segments=128 --checkpoint_timeout=600 You should increase maintenance_work_mem for large reindexing operations. That shared_buffers setting is about a factor of 10 too small too. regards, tom lane
