> We were using normal worker MPM with keepalives for this test. The current > "stable" event would have helped with idle keepalive threads, but the system > didn't seem to care.
But when using mod_php, worker is not recommended, right? I doubt prefork scales as well as worker. Working on making a FastCGI based setup the recommended approach instead of mod_php is probably more important then async. Actually, it's a prerequisite. Having 30k threads still seems like a waste of resource to me though. What about a hybrid approach? Async for network IO and other stuff that doesn't require sync calls, worker threads for other parts? Olaf