Jon Nelson <jnelson+pgsql@xxxxxxxxxxx> writes: > 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. No, it wouldn't; you don't have the slightest idea what's going on there. Those lseeks are for the purpose of detecting the current EOF location, ie, finding out whether some other backend has extended the file recently. We could get rid of them, but only at the cost of putting in some other communication mechanism instead. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
