On Tue, Oct 19, 2010 at 9:10 AM, Jon Nelson <jnelson+pgsql@jamponi.net> wrote:
> No replies?
>
> This is another situation where using pread would have saved a lot of
> time and sped things up a bit, but failing that, keeping track of the
> file position ourselves and only lseek'ing when necessary would also
> help. Postgresql was spending 37% of it's time in redundant lseek!
37% of cpu time? Is that according to strace -T? how did you measure it?
merlin