Re: [PERFORM] pg_dump index creation order

2006-05-06 Thread Ed L.
On Saturday May 6 2006 7:15 pm, Ed L. wrote: > I'm watching a long, painfully slow 60GB load from pg_dump > (8.1.2), and noticing it's jumping back and forth from > different tables. I assume this is the index creation order > showing up. > > Would it make more sense

[PERFORM] pg_dump index creation order

2006-05-06 Thread Ed L.
I'm watching a long, painfully slow 60GB load from pg_dump (8.1.2), and noticing it's jumping back and forth from different tables. I assume this is the index creation order showing up. Would it make more sense to have pg_dump dump indexes grouped by the table? That way, if a table got loaded

Re: [PERFORM] Column correlation drifts, index ignored again

2004-02-24 Thread Ed L.
On Tuesday February 24 2004 1:14, Kevin Brown wrote: > > One problem I've been running into is the merge join spilling to disk > because sort_mem isn't big enough. The problem isn't that this is > happening, it's that I think the planner is underestimating the impact > that doing this will have on

Re: [PERFORM] [PERFORMANCE] slow small delete on large table

2004-02-24 Thread Ed L.
On Monday February 23 2004 10:23, Tom Lane wrote: > "Ed L." <[EMAIL PROTECTED]> writes: > > If I could say it the way I think for a simple example, it'd be > > like this: > > > > delete from mytable > > where posteddatetime < now()

[PERFORM] [PERFORMANCE] slow small delete on large table

2004-02-23 Thread Ed L.
A 7.3.4 question... I want to "expire" some data after 90 days, but not delete too much at once so as not to overwhelm a system with precariously balanced disk I/O and on a table with millions of rows. If I could say it the way I think for a simple example, it'd be like this: delete fr