On Mon, May 5, 2008 at 9:03 AM, Scott Marlowe <scott.marlowe@xxxxxxxxx> wrote: > On Sun, May 4, 2008 at 5:11 PM, Hans Zaunere <lists@xxxxxxxxxxx> wrote: > > Hello, > > > > We're using a statement like this to dump between 500K and >5 million rows. > > > > COPY(SELECT SomeID FROM SomeTable WHERE SomeColumn > '0') > > TO '/dev/shm/SomeFile.csv' > > Wait, are you really creating a .csv file in shared memory? Can such > a thing even work? > > If you're not creating a file in /dev/shm, where is it being built? > On the main OS drive? the battery backed cached RAID array? OK, looked it up. you're making your .csv file in a ramdisk? If it gets big it's gonna make the machine start swapping. i'd suggest storing only small things in a ram disk really. Other than that, I'm not sure what the problem is.
