On Fri, Apr 12, 2013 at 02:38:27PM -0700, Jeff Davis wrote: > In general, we have more flexibility with WAL because there is no > upgrade issue. It would be nice to share code with the data page > checksum algorithm; but really we should just use whatever offers the > best trade-off in terms of complexity, performance, and error detection > rate. > > I don't think we need to decide all of this right now. Personally, I'm > satisfied having SIMD checksums on data pages now and leaving WAL > optimization until later.
As I understand it, SIMD is just a CPU-optimized method for producing a CRC checksum. Is that right? Does it produce the same result as a non-CPU-optimized CRC calculation? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
