> Hmm. If the messages are less than PIPE_BUF bytes long (4096 bytes on > Linux) then the writes are supposed to be atomic. Can you > check whether > the interspersal cases involve messages whose total length (all lines) > exceeds 4K? Tom, Some of them involve long messages (>4K), but there are many that do not (like the ones I had posted at the start of this thread). I am not entirely sure where to start counting? I have been counting from the last "LOG: statement: " string immediately preceding the corruption and I have sometimes >4K, sometimes under. Also what is the beginning of the message? (after the string "statement: "?) In any case I have plenty that are way under 4K. The good news is that most of these don't trip the query analysis tool I am using (pgFouine). I get about 50-80 entries like this in the logs per day and only maybe 1 in 300-400 trips the tool. Even the ones that don't trip the tool probably cause problems and skew the stats a bit, but that's, I hope, negligible. Still it would be good to get it to do the right thing. Thanks! George
