Recently I found my C/S program becomes slow. So I analysed the tcp traffic between my program and the Postgresql database. I found there are occasionally tcp re-transmission and that's why my porgram slow down.
But when I changed to npsql, the tcp traffic was cut off to only 1/4 and there are much fewer re-transmission. I am not sure it's the problem of odbc or it's because that I am using odbc correctly.
