"Matthew Nuzum" <[EMAIL PROTECTED]> writes: > Thanks. Other than avoiding using too much sort mem, is there anything else > I can do to ensure this query doesn't starve other processes for resources?
Not a lot. > Doing the explain analyze only increases my server load by 1 and seems to > readily relinquish CPU time, but previously when I had been running a test > query my server load rose to unacceptable levels. Interesting. EXPLAIN ANALYZE is going to cause a bunch of gettimeofday() calls to be inserted ... maybe your kernel takes those as process preemption points? Seems unlikely, but ... > FWIW, the explain was run from psql running on the db server, the test query > the other day was run from one of the webservers. Should I run this on the > db server to minimize load? Since it's an insert/select, psql isn't participating in the data flow. It's not going to matter where the psql process is. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])