On Thu, 2005-06-09 at 18:32 -0700, gopalakrishnan kamalanathan wrote: > So, does it keep all the message information that it retrieves from the > database in memory? > > I notice that the Memory usage increases as more messages are retrieved.
How do you notice this? The chart you provided doesn't demonstrate this! > Data retrieved Memory usage > 33 headers 266k > +10 msg dody 444k > +20 msg body 507k > +30 msg doby 452k > > If it does keep the message information in memory, why does it need to do > that? What says that it _is_ keeping the message information in memory? How exactly are you measuring memory size? How do you know it isn't the client-libraries for your database engine performing connection caching? How do you know it isn't the zlib library used to decompress MySQL and PostGresql's result sets? Is this real memory usage? If it is, how do you know it isn't the operating system aggressively paging packages in and out of memory. Is this the BRK size of the process? If it is, why is it decreasing at all? What operating system are you using? What client libraries and server versions/names are you using for database engine? What IMAP clients are you using? Are you only testing this with Outlook Express? Are you actually experiencing a problem we can help with? You must understand that listing answers all of these things- things that only you know right now, are FAR more important than handmade chart that shows a 60k wobble when downloading message bodies. -- Internet Connection High Quality Web Hosting http://www.internetconnection.net/
