On Wed, 2006-05-10 at 09:55 -0700, Mark Wong wrote: > Simon Riggs wrote: > > Could you turn full_page_writes = off and do a few more tests? I think > > the full page writes is swamping the xlog and masking the performance we > > might see for normal small xlog writes. > > I'd try XLOG_BLCKSZ = 4096 and 8192 to start with. Thanks. > > Ok, got data for XLOG_BLCKXZ at 4096, 8192, and 32768 with > full_page_wirtes = off. The new data is at the bottom of the page: > http://developer.osdl.org/markw/pgsql/xlog_blcksz.html
Mark, What do you think is causing the step changes at 30+ and 60+ minutes on these tests? -- Simon Riggs EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
