"Jim C. Nasby" <decibel(at)decibel(dot)org> writes:
> A friend of mine has an application where he's copying in 4000 rows at a
> time into a table that has about 4M rows. Each row is 40-50 bytes. This
> is taking 25 seconds on a dual PIII-1GHz with 1G of RAM and a 2 disk
> SATA mirror, running FBSD 4.10-stable. There's one index on the table.
If there's no hidden costs such as foreign key checks, that does seem
pretty dang slow.
> What's really odd is that neither the CPU or the disk are being
> hammered. The box appears to be pretty idle; the postgresql proces is
> using 4-5% CPU.
It's very hard to believe that *neither* disk nor CPU is maxed.
Can we see a reproducible test case, please?
regards, tom lane