Re: Keepalive for max_standby_delay
Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
From: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org
Date: 2010-05-18T21:25:46Z
Lists: pgsql-hackers
On 18/05/10 17:17, Simon Riggs wrote: > There's no reason that the buffer size we use for XLogRead() should be > the same as the send buffer, if you're worried about that. My point is > that pq_putmessage contains internal flushes so at the libpq level you > gain nothing by big batches. The read() will be buffered anyway with > readahead so not sure what the issue is. We'll have to do this for sync > rep anyway, so what's the big deal? Just do it now, once. Do we really > want 9.1 code to differ here? Do what? What exactly is it that you want instead, then? -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com