sarafian

Once more performance tweak, I have modified blockmanufacturer.php to use the smarty cache (it doesn't by default), and this has further increased my performance. I now have < 1 sec Time to First Byte for web site loading.

Please see: http://www.prestashop.com/forums/topic/176681-slow-blockcategoriestpl/ This simple change to blockcategories.php and blocktopmenu.php reduced my smarty cache size and dramatically increased web page load times/performance.

Thank you! Thank you! Thank you! I am running 1.5.2. I have tried all previous suggestions to improve web page load time (misc performance settings, using nginx instead of apache, using Amazon CloudCache for media content, etc). I have applied your change to blockcategories.php and my Time To First Byte went from over 8 sec to 2.6 sec! I then applied the same change to blocktopmenu.php, which also uses the smarty cache, and I was able to reduce TTFB to 1.45 sec. Thank you again.

I had the same problem on v. 1.5.2, and it was driving me crazy as all of the carriers were configured properly with price ranges, weight ranges, and fees for all zones. If I was not logged in, then the carriers/shipping options would display correctly for my shop's default location (United States). Once I logged in (with an address configured in the US), I would get the dreaded "There are no carriers available that deliver to this address..." mesages. I ended up putting debug statements in the code in classes/Carrier.php and discovered that the code was calculating that I was in the disabled "North America" zone, even though it was disabled and I had created a new zone called "United States" and configured the country of United States to be in the new zone with the same name! I then deleted all of the preconfigured zones that came with Prestashop, which had previously been disabled. Upon doing that, shipping is now working correctly. I hope this information helps somebody.