Stains, Great benchmarking and awesome explanations. You are an EXPERT in this area! Regards,
Shekar On Thu, May 15, 2008 at 5:56 PM, Stanislav Malyshev <[EMAIL PROTECTED]> wrote: > Hi! > > I've run a benchmark loading 725 framework class files on 5.2 and 5.3 with > and without bytecode caching. > The benchmark uses list of 725 Framework classes and loads them one by > one, via require_once and via Zend_Loader::loadClass. You can see the > files here: http://random-bits-of.info/fw-tests/ > > OK, so here's the results: > > Without bytecode cache: > require_once Zend_Loader > php5.2 4.42 4.42 > php5.3 4.96 4.97 > > With bytecode cache: > require_once Zend_Loader > php5.2 63.04 56.62 > php5.3 61.28 55.52 > > Numbers are requests per second (more is better). Bytecode cache used in > the benchmark is Zend's one, not APC. > > Conclusions from this would be: > 0. It is *very* important to understand that it is a narrow-point > benchmark that tests only one function in one specific way. Please do > not draw conclusions on behavior of whole applications based only on > this benchmark. > > 1. You *do* want to use bytecode caching. You won't get 15x performance > on any real application, but it does speed up loading very significantly. > > 2. Without bytecode caching, it doesn't matter if you use require_once > or Loader - both are equally slow :) > > 3. With bytecode caching, Loader has some overhead - explanation for > this is that with file accesses eliminated, require_once of course has > little left, while Loader still does a couple of function > calls. But on real-life apps it'd probably be very small, provided that > it's about 10% even on loading-only huge-class-list benchmark, and your > application probably does something useful instead of loading 700+ > framework classes :) > > 4. 5.3 is still a moving target, to don't put too much stake in current > benchmark results for 5.3, they probably will be different by the time > 5.3 is in release cycle (hopefully, better :) > > If you have more questions on this, please ask. > -- > Stanislav Malyshev, Zend Software Architect > [EMAIL PROTECTED] http://www.zend.com/ > (408)253-8829 MSN: [EMAIL PROTECTED]
