On 9 January 2013 21:02, Heikki Linnakangas <hlinnakan...@vmware.com> wrote:
>> OK, crazy idea, but can we just record xl_len as a difference against >> xl_tot_len, and shorten the xl_len field? > > > Hmm, so it would essentially be the length of all the backup blocks. perhaps > rename it to xl_bkpblk_len. > > However, that would cap the total size of backup blocks to 64k. Which would > not be enough with 32k BLCKSZ. Since that requires a recompile anyway, why not make XLogRecord smaller only for 16k BLCKSZ or less? Problem if we do that is that xl_len is used extensively in _redo routines, so its a much more invasive patch. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
