Re: [PERFORM] Speeding up Gist Index creations
On Mon, 2004-11-01 at 11:01, Josh Berkus wrote: Gist indexes take a long time to create as compared to normal indexes is there any way to speed them up ? (for example by modifying sort_mem or something temporarily ) More sort_mem will indeed help. How so? sort_mem improves index creation for B+-tree because we implement bulk loading; there is no implementation of bulk loading for GiST, so I don't see how sort_mem will help. -Neil ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [PERFORM] Speeding up Gist Index creations
Neil, How so? sort_mem improves index creation for B+-tree because we implement bulk loading; there is no implementation of bulk loading for GiST, so I don't see how sort_mem will help. Ah, wasn't aware of that deficiency. -- Josh Berkus Aglio Database Solutions San Francisco ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [PERFORM] Speeding up Gist Index creations
Mallah, Gist indexes take a long time to create as compared to normal indexes is there any way to speed them up ? (for example by modifying sort_mem or something temporarily ) More sort_mem will indeed help. So will more RAM and a faster CPU. Our GIST-index-creation process is probably not optimized; this has been marked as needs work in the code for several versions. If you know anyone who can help Oleg Teodor out, be put them in touch ... -- --Josh Josh Berkus Aglio Database Solutions San Francisco ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
