> > Imho this write at logfile init time adds a substantial amount of IO,
> > that would better be avoided. If we really need this, it would imho
> > be better to preallocate N logfiles and reuse them after checkpoint.
>
> Already done. See the WAL_FILES parameter.
I meant something else. I did not mean to write/format the logfile during
checkpoint at all, but to reuse logfile number 0000000 for a later logfile.
Doing the format during checkpoint hurts even more, since that is the
time when the most writes occur, no ?
In my setup initdb, or startup, or whatever would preallocate N logfiles,
and those are reused round robin.
Andreas
