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How to obsessively speed up Prestashop?


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I'm focusing on the speed aspect now and doing further tuning. My goal is to make the store load feel "instant".

 

Below are my debugs stats for the various core pages. I am using a full page cache module, APC (64mb 2 seg ttls set), MaxCDN (3 parallels), mysql query cache 512mb, shared server with 2 x 100% (2.64mhz) max allowed utilization.

 

My page is taking 2-3 secs to render which is already fast enough. I'm looking to make this even faster. What is the next thing I should be looking at? (disable layered modules?, get a vps with more cores?, etc)

 

I also wanted to understand a few aspect of the load time in debug:

  1. When APC caches, which part does it cache? The "config:" or "init:" part?
  2. While my Full Page Cache module is doing a wonderful job, I see that "Hook processing:" contributes to most of the ms. Can I assume that Hook processing makes up the "initContent:" time? What is FPC not caching?
  3. Does it make a difference if I Disable vs Uninstall a module? I tried disabling the "Analytics and Stats" modules but it doesn't make a diff.

I'm looking to see what is the next impactful step to do. Hopefully some of you speed demons out there can share :)

 

 

Product Pages

 

Load time226ms
Good boy! That's what I call a webserver!
  • config: 46ms
  • constructor: 0ms
  • init: 46ms
  • checkAccess: 0ms
  • setMedia: 2ms
  • postProcess: 0ms
  • initHeader: 0ms
  • initContent: 108ms
  • initFooter: 13ms
  • display: 10ms

 

Hook processing107ms / 4.91 Mb

  • displayHeader: 36ms / 2.58 Mb
  • displayTop: 14ms / 0.48 Mb
  • displayFooter: 13ms / 0.53 Mb
  • moduleRoutes: 8ms / 0.27 Mb
  • actionProductOutOfStock: 6ms / 0.19 Mb
  • displayRightColumnProduct: 6ms / 0.19 Mb
  • displayProductTabContent: 5ms / 0.12 Mb
  • displayFooterProduct: 4ms / 0.16 Mb
  • displayProductTab: 4ms / 0.1 Mb
  • actionDispatcher: 4ms / 0.05 Mb
  • displayLeftColumn: 1ms / 0.05 Mb
  • displayProductButtons: 1ms / 0.06 Mb
  • displayLeftColumnProduct: 1ms / 0.06 Mb
  • displayRightColumn: 1ms / 0.07 Mb
  • maxHeader: 0ms / 0 Mb
  • actionFrontControllerSetMedia: 0ms / 0 Mb
  • actionModuleRegisterHookBefore: 0ms / 0 Mb
  • freeFblock: 0ms / 0 Mb
  • actionModuleRegisterHookAfter: 0ms / 0 Mb
  • DisplayOverrideTemplate: 0ms / 0 Mb
  • maxInfos2: 0ms / 0 Mb

 

Memory peak usage12.9 Mb

  • config: 4.13 Mb (4.2 Mb)
  • constructor: 0 Mb (4.2 Mb)
  • init: 2.74 Mb (7 Mb)
  • checkAccess: 0 Mb (7 Mb)
  • setMedia: 0.08 Mb (7.1 Mb)
  • postProcess: 0 Mb (7.1 Mb)
  • initHeader: 0.01 Mb (7.1 Mb)
  • initContent: 4.83 Mb (11.9 Mb)
  • initFooter: 0.56 Mb (12.5 Mb)
  • display: 0.29 Mb (12.9 Mb)

Total cache size (in Cache class)1.13 M

 

DB type: DbPDO 
SQL Queries97 queries 
Time spent querying66ms
Included files: 233
Size of included files2.65 Mb

 

 

 

 

 

Product Listing Page

 

Load time736ms
I hope it is a shared hosting

  • config: 157ms
  • constructor: 0ms
  • init: 53ms
  • checkAccess: 0ms
  • setMedia: 3ms
  • postProcess: 0ms
  • initHeader: 0ms
  • initContent: 423ms
  • initFooter: 13ms
  • display: 87ms

 

Hook processing143ms / 11.32 Mb

  • displayHeader: 93ms / 8.76 Mb
  • displayTop: 19ms / 1.1 Mb
  • displayFooter: 13ms / 0.74 Mb
  • moduleRoutes: 7ms / 0.27 Mb
  • actionDispatcher: 4ms / 0.05 Mb
  • displayRightColumn: 3ms / 0.27 Mb
  • displayLeftColumn: 1ms / 0.05 Mb
  • productlHook: 1ms / 0.04 Mb
  • productlratingHook: 1ms / 0.03 Mb
  • maxHeader: 0ms / 0 Mb
  • freeFblock: 0ms / 0 Mb
  • actionModuleRegisterHookBefore: 0ms / 0 Mb
  • actionFrontControllerSetMedia: 0ms / 0 Mb
  • actionProductListOverride: 0ms / 0 Mb
  • actionModuleRegisterHookAfter: 0ms / 0 Mb
  • DisplayOverrideTemplate: 0ms / 0 Mb
  • maxInfos2: 0ms / 0 Mb

 

Memory peak usage35.7 Mb

  • config: 11.64 Mb (11.7 Mb)
  • constructor: 0 Mb (11.7 Mb)
  • init: 5.03 Mb (16.7 Mb)
  • checkAccess: 0 Mb (16.7 Mb)
  • setMedia: 0.23 Mb (17 Mb)
  • postProcess: 0 Mb (17 Mb)
  • initHeader: 0.01 Mb (17 Mb)
  • initContent: 14.5 Mb (31.5 Mb)
  • initFooter: 0.75 Mb (32.3 Mb)
  • display: 3.3 Mb (35.7 Mb)

Total cache size (in Cache class)1.35 Mb

 

DB type: DbPDO 
SQL Queries356 queries 
Time spent querying218ms
Included files: 241
Size of included files2.48 Mb

 

 

 

 

 

 

 

Home Page

Load time214ms
Good boy! That's what I call a webserver!
  • config: 84ms
  • constructor: 0ms
  • init: 29ms
  • checkAccess: 0ms
  • setMedia: 2ms
  • postProcess: 0ms
  • initHeader: 0ms
  • initContent: 84ms
  • initFooter: 11ms
  • display: 5ms
  •  

 

 

 

 

 

 

 

 

 

 

 

Hook processing102ms / 11.03 Mb

  • displayHeader: 64ms / 8.75 Mb
  • displayFooter: 11ms / 0.74 Mb
  • displayTop: 10ms / 0.63 Mb
  • displayHome: 6ms / 0.28 Mb
  • moduleRoutes: 4ms / 0.25 Mb
  • actionDispatcher: 3ms / 0.05 Mb
  • displayRightColumn: 2ms / 0.27 Mb
  • displayLeftColumn: 1ms / 0.05 Mb
  • maxHeader: 0ms / 0 Mb
  • actionFrontControllerSetMedia: 0ms / 0 Mb
  • actionModuleRegisterHookBefore: 0ms / 0 Mb
  • freeFblock: 0ms / 0 Mb
  • DisplayOverrideTemplate: 0ms / 0 Mb
  • actionModuleRegisterHookAfter: 0ms / 0 Mb
  • maxSlideshow: 0ms / 0 Mb
  • maxInfos: 0ms / 0 Mb

 

Memory peak usage27.4 Mb

  • config: 11.54 Mb (11.6 Mb)
  • constructor: 0 Mb (11.6 Mb)
  • init: 4.38 Mb (16 Mb)
  • checkAccess: 0 Mb (16 Mb)
  • setMedia: 0.23 Mb (16.2 Mb)
  • postProcess: 0 Mb (16.2 Mb)
  • initHeader: 0.01 Mb (16.2 Mb)
  • initContent: 10.01 Mb (26.3 Mb)
  • initFooter: 0.75 Mb (27 Mb)
  • display: 0.27 Mb (27.4 Mb)

Total cache size (in Cache class)0.37 Mb

 

DB type: DbPDO 
SQL Queries39 queries 
Time spent querying19ms
Included files: 191
Size of included files2.17 Mb
Edited by Pressed0024 (see edit history)

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Do you have a link to your site? I would bail the shared server, that is more than likely one of your issues. This site runs on a pretty good server, http://tools.pingdom.com/fpt/#!/c7u2gd/maisondestencils.com  so does this one http://tools.pingdom.com/fpt/#!/cGcrAL/zpalette.com That last one, because of the toolbar look at how many requests it is making, but still pretty quick even with that. 

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My site actually feels the same (when not on browser cache), in fact maybe faster (when on browser cache) than those 2 sites browsed from my location (Asia). I adopt 15 mins browser caching and loading is near instant when it hits browser cache. It feels the same as those 2 sites when cache is cleared. My server is in Phoenix, US. 

 

My Pingdom performance loses at 2 sec load time. This is the full time taken to load all DOMs.

 

I'm trying to speed up above-the-fold page render which is what matters. I'm looking at this module: http://www.prestashop.com/forums/topic/282343-free-module-move-java-script-to-footer/?do=findComment&comment=1477037

 

Also hoping to see if anyone knows of any pre-loaded modules that is known to slow down the compilation.

 

What is the optimum APC setting for a site that receives 800 average daily visits with average 4 pages per visit?

 

Trying to put moving to a dedicated server as the last resort as that means I lose all those litespeed, fully-managed goodies that comes with shared hosting at good cost.

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Both of those sites are hosted in the US as well, with their target audience being in the US.

 

Staying with a shared server, run loadimpact on your site and see how it manages under a load. 

 

There is no optimal setting as far as APC is concerned without knowing more about the environment and having access to the server. How many workers are spawned during a day? How long is your APC cache lasting before a worker dies?

 

If you link me to your site I can give you some tips on what you can do to make it run faster.  

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