Drupal's bootstrap takes something like 50% of the total page processing time on a typical page. You are still paying for that overhead even though you don't need it.
See http://api.drupal.org/api/drupal/includes--bootstrap.inc/function/drupal_bootstrap/6 and look at something like the chatroom module's lightweight bootstrap code: http://drupalcode.org/viewvc/drupal/contributions/modules/chatroom/chatroomread.php?revision=1.29.4.19&view=markup In particular: require_once './includes/bootstrap.inc'; drupal_bootstrap(DRUPAL_BOOTSTRAP_CONFIGURATION); // Choose the minimum bootstrap level necessary for your module. // Put your code here. // See performance skyrocket. // Rejoice. Regards, Greg On Sun, Feb 6, 2011 at 10:15 AM, John Mitchell <mitchellj...@gmail.com> wrote: > Any reason why having a javascript timer fire every 2.5 second for an ajax > request to my own callback(listed below) that all it does is return the > contents of 2 _session variables would take up so much resources? > > John > > function refreshcarttimer() { > print($_SESSION['num_items'] . ',' . $_SESSION['uc_price']); > return; > } > > /** > * Implementation of hook_menu(). > */ > > function product_type_menu() { > $items = array(); > > $items['cart/refreshcarttimer'] = array( > 'title' => 'Refresh Shopping Cart', > 'description' => 'Refresh Shopping Cart', > 'page callback' => 'refreshcarttimer', > 'access callback' => TRUE, > 'type' => MENU_CALLBACK, > ); > return $items; > } > > On Sun, Feb 6, 2011 at 2:10 AM, John Mitchell <mitchellj...@gmail.com> > wrote: >> >> I have a javascript timer set to fire every 2.5 seconds so that I can set >> the current values for the items and total for the shopping cart summary. I >> would like to be able to get these values from client side cookies or >> javascript global variables so that I don't have to make an ajax call to the >> server but I have found that the DOM elements are not accessible within the >> javascript function unless I run an ajax request to a page (listed below) >> and after it returns then the DOM elements are accessible (i.e. >> $(".num-items").html(numItems);) and now I can update them. Having these >> ajax requests run every 2.5 seconds for every client will not scale. >> >> How can I make Drupal DOM elements accessible within a javascript function >> without having to do an ajax request to a page? >> >> Thanks, >> >> John >> >> setInterval('updateShoppingCartInfo()', 2500); >> >> function updateShoppingCartInfo(){ >> var xmlHttpReq = new XMLHttpRequest(); >> var url = 'https://' + document.domain + '/cart/refreshcarttimer'; >> xmlHttpReq.open('post', url, true); >> xmlHttpReq.onreadystatechange = function() { >> if (xmlHttpReq.readyState != 4) { >> return; >> } >> else { >> var responseText = xmlHttpReq.responseText; >> var numItems = >> responseText.substr(0,responseText.indexOf(",")); >> var ucPrice = >> responseText.substr(responseText.indexOf(",")+1); >> $(".num-items").html(numItems); >> $(".uc-price").html(ucPrice); >> } >> } >> xmlHttpReq.send(null); >> } >> >> >> -- >> John J. Mitchell > > > > -- > John J. Mitchell > -- Greg Knaddison | 720-310-5623 | http://growingventuresolutions.com http://masteringdrupal.com - Videos and Tutorials
