Hi Alexander, On 22.06.2017 18:36, Alexander Korotkov wrote:
On Wed, Jun 7, 2017 at 11:33 AM, Alexander Korotkov <a.korot...@postgrespro.ru <mailto:a.korot...@postgrespro.ru>> wrote:
0002-heap-page-special-1.patch Putting xid and multixact bases into PageHeaderData would take extra 16 bytes on index pages too. That would be waste of space for indexes. This is why I decided to put bases into special area of heap pages. This patch adds special area for heap pages contaning prune xid and magic number. Magic number is different for regular heap page and sequence page.
We've discussed it earlier but it worth mentioning here too. You have pd_prune_xid of type TransactionId which is treated elsewhere as ShortTransactionId (see HeapPageGetPruneXid() and HeapPageSetPruneXid()) and hence introduces redundant 4 bytes. Could you please fix it?
-- Ildar Musin i.mu...@postgrespro.ru -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
