freelex Posted January 31, 2017 Share Posted January 31, 2017 Hello, we have an issue on our website: www.ozdobnepolstare.cz - Time to first byte is too slow (about 7 seconds, sometimes longer...). Server info: http://ozdobnepolstare.cz/php/php.php Cache in configuration is ON. Can somebody help us? Thank you for reply Link to comment Share on other sites More sharing options...
JeredBolton Posted February 1, 2017 Share Posted February 1, 2017 What's the specification of the server you're running this on? Link to comment Share on other sites More sharing options...
freelex Posted February 1, 2017 Author Share Posted February 1, 2017 Server information: Linux wl61-wv5 2.6.32-573.7.1.el6.x86_64 #1 SMP Tue Sep 22 22:00:00 UTC 2015 x86_64 PHP version: 5.4.45 Memory limit: 128M Max execution time: 90 Database information: MySQL version: 5.6.17 MySQL engine: InnoDB Tables prefix: nvct_ Store information PrestaShop version: 1.6.1.9 Link to comment Share on other sites More sharing options...
JeredBolton Posted February 1, 2017 Share Posted February 1, 2017 That's your PHP and DB information. I'm asking about the server, that is amount of RAM, type of processor, SSDs etc. Link to comment Share on other sites More sharing options...
Guest Posted February 1, 2017 Share Posted February 1, 2017 I think some of your images are too big (filesize) See here: https://gtmetrix.com/reports/www.ozdobnepolstare.cz/YrVsZzOG Look at the waterfall page and you will see how long it takes to get the images I assume you have all your "performance" settings switched on in the prestashop backoffice? Link to comment Share on other sites More sharing options...
freelex Posted February 1, 2017 Author Share Posted February 1, 2017 Shared hosting 2x procesor Intel Xeon E5-2650 v2, 10C/20T 1.70GHz 25MB 384 GB RAM DDR3 4x SATA 1 TB, 8x SSD 800GB, RAID 1 or RAID 6 OS Linux CentOS 7 Link to comment Share on other sites More sharing options...
freelex Posted February 1, 2017 Author Share Posted February 1, 2017 It's multistore with 5 shops and on main shop (originalzfilmu.cz) we resized images, but issue still persists. Problem is First time byte (about 5-7 seconds - in some cases we see 25 seconds) what you can see for yourself, when you try go to the shop. Link to comment Share on other sites More sharing options...
Guest Posted February 1, 2017 Share Posted February 1, 2017 This suggests that TTFB is OK for individual assests https://tools.keycdn.com/performance?url=http://www.ozdobnepolstare.cz/modules/homesliderpro/images/resize_Chanel.png I think therefore that other things on your site are causing the issue Again. are all your "performance" settings on? Try switching off all third party modules to try to narrow it down Link to comment Share on other sites More sharing options...
JeredBolton Posted February 1, 2017 Share Posted February 1, 2017 "Shared hosting" - how many other hosting accounts are on that server? Link to comment Share on other sites More sharing options...
prestamax Posted February 2, 2017 Share Posted February 2, 2017 (edited) You should upgrade your php version. PHP 5.4 is no longer supported and unsecure. PHP 7 is much faster. You could try a local install with php 7 first. What kind of cache is activated ? "file system"? As to my experience caching in file system may cause massive delays in loading time sometimes. If your server doesn't support other cache methods it's sometimes better not to activate cache at all. You could try prestaspeed from codecanyon. And as mentioned before your slider images are way too big! Your slider images "weigh" 7 x 700KB = 4,9MB(!!!)png is not the right file format for slider images. Use jpg instead and compress them until they are not more than max. 100KB each. Edited February 2, 2017 by prestamax (see edit history) Link to comment Share on other sites More sharing options...
freelex Posted April 11, 2017 Author Share Posted April 11, 2017 Thanks all for replies. Problem was solved when I updated Prestashop to version 1.6.1.12. Link to comment Share on other sites More sharing options...
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