On Thu, Feb 21, 2013 at 12:16 PM, Jeff Janes <jeff.ja...@gmail.com> wrote: > Does the kernel really read a data block from disk into memory in > order to immediately overwrite it? I would have thought it would > optimize that away, at least if the writes are sized and aligned to > 512 or 1024 bytes blocks (which WAL should be).
Now that you mention that I agree it seems strange, but that's what I saw. /me scratches head It does seem pretty odd, though. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
