In short: if using a low-end RAID card (without cache), do yourself a favor and switch to software RAID. If using a mid-to-high-end card (with BBU or NVRAM), then hardware is often (but not always! see below) a good choice. Long answer: when computing power was limited, hardware RAID cards had the significant advantage to … Read more
Although a quarter of second is quite slow to query a single post from db, I’m convinced that this is not your only issue. I also use the Query Monitor plugin, but I have never really taken note when does the plugin redline a query as being slow. But that is not the point here. … Read more
If the front page is set to display posts then the query for those posts will run regardless of wether your theme shows these posts or not. That’s why you’re getting pagination with no posts. You can test this by temporarily removing your themes front-page.php (or whatever it is). You should see all your posts … Read more
Right now: Small packet performance sucks under Xen (moved from the question itself to a separate answer instead) According to a user on HN (a KVM developer?) this is due to small packet performance in Xen and also KVM. It’s a known problem with virtualization and according to him, VMWare’s ESX handles this much better. … Read more
You are perfectly right, ThickBox is old and it supposes to be present in admin Dashboard only, but beeing able to change this kind of behavior makes WordPress great (and sometimes not). Every theme or plugin can actually call this library for his help with the wp_enqueue_script(‘thickbox’) function or it can use it as a … Read more
It is impossible to just guess what the performance issue is, it might not be related to a web server at all. Your options with WordPress are (scope ascending): PHP runtime profiler / debug code for basic timing of WP load. PHP engine profiler (binary extension), such as Blackfire. Full stack profiler (server software, etc), … Read more
Use a cache plugin (or write your own custom cache plugin) to server those posts. Set the cache plugin to update posts’ contents whenever any other post title is updated / added. Or you can do this in a background process using cron. This way your original content remains intact, but you still get quick … Read more
Instead of directly outputting the stylesheets to your header, you should use wp_enqueue_stylesheet. Take a look at this example: add_action( ‘wp_enqueue_scripts’, ‘my_scripts’ ); function my_scripts(){ if (is_page([505,981,928,1035,1036])) wp_enqueue_style( ‘css1′, get_template_directory_uri().’/start-here.css’); if (is_page([37,40])) wp_enqueue_style( ‘css2′, get_template_directory_uri().’/faq-links.css.css’); if (is_page(’27’)) wp_enqueue_style( ‘css3′, get_template_directory_uri().’/contact-form.css’); if (is_front_page()) wp_enqueue_style( ‘css4′, get_template_directory_uri().’/slider.css’); } This way, you don’t have to mess with your … Read more
With some further investigation, it appears that the performance problem is mostly due to a high number of network calls between two systems (Oracle SSXA and UCM). The calls are quick but plenty and serialized, hence the low CPU usage (mostly waiting for I/O), the high load average (many calls waiting to be processed) and … Read more
lurie. I would use vanilla Javascript in the front end. This way, you don’t need to invalidate any server cache. Here is a untested solution. The Javascript File – using ES6 features and forEach polyfill In your main javascript file: ‘use strict’; /** * @summary Clones social buttons and insert them elsewhere * * Clones … Read more