On Mon, Mar 13, 2006 at 06:49:39PM -0500, mcelroy, tim wrote: > Does anyone know how much of a performance hit turning stats_block_level and > stats_row_level on will incur? Do both need to be on to gather cache > related statistics? I know the annotated_conf_80 document states to only > turn them on for debug but if they're not that performance intensive I > cannot see the harm. I ran some tests a few months ago and found that stats_command_string had a significant impact, whereas stats_block_level and stats_row_level were almost negligible. Here are my test results: http://archives.postgresql.org/pgsql-performance/2005-12/msg00307.php Your results may vary. If you see substantially different results then please post the particulars. -- Michael Fuhr
