On Thu, Oct 06, 2005 at 04:25:11PM -0400, Tom Lane wrote: > Martijn van Oosterhout <kleptog@svana.org> writes: > > Are we awfully worried about people still using 2.0 kernels? And it > > would replace two calls with three in the worst case, we currently > > lseek before every read. > > That's utterly false.
Oops, you're right. I usually strace during a vacuum or a large query and my screen fills up with: lseek() read() lseek() read() ... So didn't wonder if the straight sequential read was optimised. Still, I think pread() would be a worthwhile improvement, at least for Linux. -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
pgpu7YI0K0Ugf.pgp
Description: PGP signature
