Re: [PHP4BETA] RFC: Request startup optimization

Generally I'm -1 for the change if there's no significant noticeable change. There's a considerable penalty for the shutdown process involved with this patch, and if the gain is unnoticeable, I don't see the point (that's what we arrived at in the PDM, as far as I recall). Zeev On Fri, 11 Feb 2000 thies@digicol.de wrote: > On Fri, Feb 11, 2000 at 04:50:26PM +0100, Sascha Schumann wrote: > > What? > > > > Defer the request startup until one of the module specific > > functions is used. Request shutdowns are avoided completely, > > if a module has a startup handler, but was not started up. > > > > Why? > > > > Module request startups (and respective shutdowns) can add > > (noticeable?) overhead to requests. > > > > How is it implemented? > > > > We use a stub function in the function_table which > > > > (a) calls the request_startup_func of the module > > (b) adds the module to the list of lazy_started_modules > > (c) sets all per-module function_table entries to their real > > handler > > > > Step (c) is reversed during module_registry_cleanup(), if the > > specific module was found in lazy_started_modules. > > > > Your comments and benchmark results are welcome. > > > > -- > > > > Regards, > > > > Sascha Schumann > > Consultant > > my initial "hello world" benchmark showed no measurable jump > at all (could be me beeing stupid - will do some quantifying > early next week). im +1 for the change - what's your milage > sascha? > -- Zeev Suraski <zeev@zend.com> http://www.zend.com/