> From: Robert Cummings [mailto:robert@xxxxxxxxxxxxx] > > However, accelerators don't make scripts faster per se. > They merely cut out the script reading and parsing time. Which is a HUGE portion of time since PHP is a two-pass step. One that reads and compiles to opcodes (with syntax checking) and another which actually executes it. > So, while > you may experience 10% gain within the first second of your script > running, the use of an accelerator should have no bearing > down the road > except for the initial dynamic load of other scripts at runtime. This is sort of misleading. You will experience faster page loads if it's a web php file, and if APC does allow you to run cached scripts via CLI, then these scripts will start execution immediately too. > Long running scripts will see almost no benefit from an accelerator. PHP scripts are (like it or not) NOT designed to be daemons and run for long periods of time. The GC is no optimized for such things. It's quite inneficient from what I've read. The whole purpose of a PHP _page_ is to get in and get out. Hit it and quit it. Therefore memory efficiency is not as important as speed and ease of use. > This is the general reason why CLI acceleration isn't very useful. That said > though, one could certainly glean an advantage if they had a > cron job or other daemon that was loading a script often. As is probably often the case, moreso than a "long running script". I think a code optimizer is what would be desired if you're trying to make a faster script. However in this day and age, I suspect that the 2nd phase of the compiler already does all the optimizing it can before creating the byte code. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
