John Madden wrote:
First off, I'd recommend not using Sun hardware for this sort of thing - mid-range intels will blow the doors of of sparcs for this sort of processing. Secondly, we have to consider how this load testing software works -- what, exactly, is it doing within SM? We support about 5k users on 3 load-balancd PIII/1000's and have plenty of room to grow.
That surprises me. We aren't a Linux shop--yet--and I'm not sure I'm willing to start setting up Linux boxes will-nilly for this. I'm curious why Intel would be better than sparc, though.
As for the load testing software, it just runs a script--say, login, check mail, go to a folder, logout. Rinse, repeat. Once SM failed for real world users, I needed some way to test it without using human subjects. :)
This is probably one of your bigger problems. Given that it doesn't
support server-side sorting, it's left to the client, which can't do it
nearly as efficiently as the server. Why are you using iplanet's imap? Have you looked into implementing cyrus or courier?
We use iPlanet for mail, and again, I can't see changing one component of the system for this. In fact, our mail set up is pretty complex now. Adding a different imap would make that worse. What I see in testing is that the load goes way up on the initial login, then levels out. I assume that's the sorting problem.
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