> COPY invokes all the same logic as INSERT on the server side
> (rowexclusive locking, transaction log, updating indexes, rules).
> The difference is that all the rows are inserted as a single
> transaction. This reduces the number of fsync's on the xlog,
> which may be a limiting factor for you. You'll want to crank
> WAL_BUFFERS and CHECKPOINT_SEGMENTS to match, though.
> One of my streams has 6K records; I run with WB=1000, CS=128.
So what's the difference between a COPY and a batch of INSERT
statements. Also, surely, fsyncs only occur at the end of a
transaction, no need to fsync before a commit has been issued, right?
David
