Sagive, wp-blog-header.php loaded in the index.php on each page request. AJAX calls included (if that’s what you mean “time after time”. Then it loads template-loader.php. This has nothing to do with the SQLs you see, and not with the “spikes”. Install the Query Monitor plugin to see your SQLs better in the Debug Bar. Do … Read more
For each extra functionality, you are going to pay for How much would depend on the function or action. It is like @TomJNowell said, even a simple echo statement costs time and memory although it is really minute and insignificant. The real issue here is db calls as they can get very expensive depending on … Read more
I’ll be controversial here and point out that if you’re using a pre-built theme as massively “heavy” as you are, then honestly I wouldn’t even worry about minning CSS files! I’ll go out on a limb and guess you are also using a bunch of plugins (my bunch is 6+) in which case why not … Read more
I monitor a few websites with pingdom, one of the sites I monitor is not mine but I monitor out of curiosity is a amazon hosted site. In the past 6 months it has had 3 hours of downtime and 2 hour of that is in one chunk, apart from the it just went off … Read more
You should look at the queries there run on the pages, with and without plugins and custom Theme. So you have the possibility to compare the process and find the bottlenecks. As helping tools should I named: https://wordpress.org/plugins/debug-objects/ https://wordpress.org/plugins/query-monitor/ Activate the debug mode so that you also get errors and the usage of minified scripts … Read more
It is very possible to scale WordPress to support multiple sites. WordPress.com, for example, has over 13 million. The trick, when it comes to performance, is to: Make sure your server can handle it If you’re on a shared hosting system, upgrade to a dedicated server (or many). If you’re running 170 blogs, you should … Read more
Not much information to go on… Start with elimination – disable the plugins, switch to default (or better – blank) theme. If it gets better – just find code at fault. If you are down to the bare and clean WP core and still having the issue – likely you have some server configuration issue. … Read more
I’ve actually been in the exact situation you’re in before, all you need to do is drop the __()s and the _e()s and replace them with their first parameter, you can pretty easily do this by regex if there are a lot, and it’s quick to do by hand if there aren’t…I’m not sure what … Read more
There is no significant difference. Both will use a cached version of the current $post, in one you will access it via global $post, in other via functions that will get the data from the $post in the cache. I would suggest moving the in_the_loop() condition to be first in the IF.
WordPress has Transient and Object Cache APIs available. In a default WordPress install, Transients are stored in the database while Object Cache is stored in memory for the duration of the request. You can change this configuration to using something like Redis, Memcache, or APC to store and access this faster. In your case, you’d … Read more