The score below was taken based on 8.2 code, not 8.3 code. So I don't think the below measure is introduced only in 8.3 code.
Tom Lane wrote: > Koichi Suzuki <[EMAIL PROTECTED]> writes: >> For more information, when checkpoint interval is one hour, the amount >> of the archived log size was as follows: >> cp: 3.1GB >> gzip: 1.5GB >> pg_compresslog: 0.3GB > > The notion that 90% of the WAL could be backup blocks even at very long > checkpoint intervals struck me as excessive, so I went looking for a > reason, and I may have found one. There has been a bug in CVS HEAD > since Feb 8 causing every btree page split record to include a backup > block whether needed or not. If these numbers were taken with recent > 8.3 code, please retest with current HEAD. > > regards, tom lane > -- Koichi Suzuki ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
