Re: Streaming replication and non-blocking I/O

On Wed, Dec 9, 2009 at 3:58 PM, Heikki Linnakangas
<heikki.linnakangas@enterprisedb.com> wrote:
> True. Another idea I had was to introduce a callback that backend libpq
> can call when the buffer fills. Walsender would set the callback to
> ProcessStreamMsgs().
>
> But if everyone is happy with just relying on the OS buffer to not fill
> up, let's just drop it.

The OS buffer is expected to be able to store a large number of
XLogRecPtr messages, because its size is small. So it's also OK
to just drop it.

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center