Tom, Actually the 120 records I quoted is a mistake. Since it is a three band image the number of records should be 360 records or 120 records for each band.
Mark -----Original Message----- From: Tom Lane [mailto:[EMAIL PROTECTED] Sent: Friday, May 18, 2007 10:48 AM To: Mark Harris Cc: pgsql-performance@postgresql.org Subject: Re: [PERFORM] reading large BYTEA type is slower than expected "Mark Harris" <[EMAIL PROTECTED]> writes: > We have recently ported our application to the postgres database. For > the most part performance has not been an issue; however there is one > situation that is a problem and that is the initial read of rows > containing BYTEA values that have an average size of 2 kilobytes or > greater. For BYTEA values postgres requires as much 3 seconds to read > the values from disk into its buffer cache. How large is "large"? (No, I don't believe it takes 3 sec to fetch a single 2Kb value.) regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
