Briljander Posted February 16, 2016 Share Posted February 16, 2016 Hi, I have been trying to tweak my site to become a little bit faster. First visit is pretty slow but if I visit the same page again right after then its fast. When waiting for about 10 minutes again the page loads slow again. Im using Prestashop 1.6.1.4, MariaDB 10.1, OPCache 7.04 and have Smarty Cache and CCC turned on. Mysqlquerysize is 128MB, PHP memory limit is 256MB. The querying time is fast, but it seems like its the wait time that is slow when I check with Pingdom. Does anyone have a solution for this or can give me a hint of something I can try to tweak to get this to work faster? Does it have something to do with cache? .htaccess? Thanks in advance Link to comment Share on other sites More sharing options...
JPresta.com Posted February 16, 2016 Share Posted February 16, 2016 Hi, I have been trying to tweak my site to become a little bit faster. First visit is pretty slow but if I visit the same page again right after then its fast. When waiting for about 10 minutes again the page loads slow again. Im using Prestashop 1.6.1.4, MariaDB 10.1, OPCache 7.04 and have Smarty Cache and CCC turned on. Mysqlquerysize is 128MB, PHP memory limit is 256MB. The querying time is fast, but it seems like its the wait time that is slow when I check with Pingdom. Does anyone have a solution for this or can give me a hint of something I can try to tweak to get this to work faster? Does it have something to do with cache? .htaccess? Thanks in advance The WAIT is the time Prestashop is generating the page. To analyse where the time is being spent you can enable PROFILING. Link to comment Share on other sites More sharing options...
Briljander Posted February 16, 2016 Author Share Posted February 16, 2016 Thank you for your answer. I have attached two screenshots in my first post with first visit and second visit from profiling. They are pretty hard to see but just click below "Attached Thumbnails" I have tried to analyse it but really dont know how to continue. The things that take the most time is_construct and initcontent. The page is loading fine the second time so it got to have something to do with the cache that works for the second time. But I really dont know how I can extend this time. The OPCache seems fine, 57% full memory. The querying time is low - only around 100ms. The site is not public so Im the only one visiting right now. Link to comment Share on other sites More sharing options...
JPresta.com Posted February 16, 2016 Share Posted February 16, 2016 The page is loading fine the second time so it got to have something to do with the cache that works for the second time. I agree. Maybe when you will open your site with a bit of traffic it will keep the cache warm and so be fast. Link to comment Share on other sites More sharing options...
Briljander Posted February 16, 2016 Author Share Posted February 16, 2016 (edited) But I think there will be a couple of times where I dont have visitors for 5-10 minutes and then it will be slow again. I have tried to turn everything off, except OPCache, and restarted Apache. I can still get a descent speed with a loading time of 571ms for the second visit. So there must be something else that is helping the me out with caching. But I dont know what! SMARTY Never recompile CacheNo CCC Smart Cache för CSSNo Smart Cache för JavaScriptNo Minimera HTMLNo Komprimera infogade JavaScript i HTMLNo Flytta JavaScript till slutetNo Apache-optimering No CACHNING Use cache No Edited February 16, 2016 by Briljander (see edit history) Link to comment Share on other sites More sharing options...
El Patron Posted February 16, 2016 Share Posted February 16, 2016 But I think there will be a couple of times where I dont have visitors for 5-10 minutes and then it will be slow again. I have tried to turn everything off, except OPCache, and restarted Apache. I can still get a descent speed with a loading time of 571ms for the second visit. So there must be something else that is helping the me out with caching. But I dont know what! SMARTY Never recompile CacheNo CCC Smart Cache för CSSNo Smart Cache för JavaScriptNo Minimera HTMLNo Komprimera infogade JavaScript i HTMLNo Flytta JavaScript till slutetNo Apache-optimering No CACHNING Use cache No all of the above should be set to 'yes/enabled', you can leave CAHNNING Use Cache = No for now Link to comment Share on other sites More sharing options...
Briljander Posted February 16, 2016 Author Share Posted February 16, 2016 Hi El Patron, Thanks for your answer. I know. Just wanted to show that i can get decent page loading with these turned off. Thats why Im wondering what it is that is helping my site to load fast the second visit. All these tweaks are off so it must be something else and i would like to know what it is so maybe i can make it last longer. Link to comment Share on other sites More sharing options...
El Patron Posted February 17, 2016 Share Posted February 17, 2016 first page load requires load of CCC of .js and .css files, the large files, among others. (.js files should be loaded bottom) re-visit of the same page will be significantly faster (assuming mod_expires for CCC of .js/.css) this is nature of previous PrestaShop versions which is still better than most...but...read on in 1.7, we will have one CCC .js/.css file, across multiple pages, this is going to be a 'significant' performance improvement. Above the fold across multiple pages will be super fast. Link to comment Share on other sites More sharing options...
Briljander Posted February 18, 2016 Author Share Posted February 18, 2016 first page load requires load of CCC of .js and .css files, the large files, among others. (.js files should be loaded bottom) re-visit of the same page will be significantly faster (assuming mod_expires for CCC of .js/.css) this is nature of previous PrestaShop versions which is still better than most...but...read on in 1.7, we will have one CCC .js/.css file, across multiple pages, this is going to be a 'significant' performance improvement. Above the fold across multiple pages will be super fast. Oki, good to know how it works. I been searching all over the Internet to find a solution. But does the .js and .css reload every 3-5 minutes for the next visit? I am using mod_expires and its set to 1 Week or more. I have found some discussions talking about Apache having long TTFB at first visit and then second visit seems to be quick: But I cant seem to find any solution for this. Sounds great with that improvement in 1.7! Link to comment Share on other sites More sharing options...
Briljander Posted February 22, 2016 Author Share Posted February 22, 2016 Does anyone know if this can have something to do with Apache-services spinning down or something? And if so where I can check that out? Link to comment Share on other sites More sharing options...
Briljander Posted February 25, 2016 Author Share Posted February 25, 2016 Its using a some swap: Current Memory Usage total used free shared buffers cached Mem: 1016068 1005704 10364 59012 2852 106804 -/+ buffers/cache: 896048 120020 Swap: 2097148 290648 1806500 Total: 3113216 1296352 1816864 Anyone think my issue will be better if I upgrade my VPS from 1GB, 2 Cores Intel® Xeon® CPU E5-2620 v2 @ 2.10GHz to a VPS with 2GB RAM and 3 Cores or is this just a Prestashop problem? That the TTFB will be reduced at first visit? Must clarify that the site isnt public so there is no load at all right now. Link to comment Share on other sites More sharing options...
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