It is always best to avoid the use of plugins as it is simply an overhead on server resources. I strongly recommend that you use header.php or functions.php for adding the code. This is not true. In the end, it all comes down to PHP code. If the code lives in a plugin, a theme, … Read more
I think Pingdom Tools gives you a false image. I opened your website (advia.com.au?) in Chrome with the Developer Tools open, and it loads 57 items, not 146 as Pingdom Tools shows. I think Pingdom Tools just scans the HTML and CSS files and loads all images it finds there – you have 113 url() … Read more
A few things to check on: Review wp_salt. Make sure all of the web servers are running on the same set of salts in the wp-config.php file. Ideally, these should be mirrored from a single location. Review is_ssl() and make sure this function is properly detecting SSL across all of your web servers. I’ve seen … Read more
@Tal, Generally speaking you should only be using one caching plugin. WP Super Cache, W3 Total Cache, Hyper Cache and DB Cache Reloaded all drop files directly in your wp-content directory and they would conflict with each other and cause errors if you were using more than one. I would recommend using W3 Total Cache … Read more
W3 Cache will do this for you
There’s a free to download ‘lite’ version of the GDPress Tools plugin that may sort you out, but it’s probably preferable and more accurate to use XDebug + KCachegrind. FWIW, the latest build of PHPStorm integrates with XDebug’s profiler to handle the data presentation and visualisation side.
Depends. One argument could be that if the requested page use all sizes then there will be a lot of image calls (slower response, bandwidth etc) but you can bypass that i.e. by loading images with JS. Also more sizes means more disk space usage. I don’t think there is any significant performance concern related … Read more
It would depend on the speed of the NFS and the speed of the local network. If your using an object cache like APC the plugins and theme file folders will not be effected because they will be loaded in memory. A better solution would be to use a CDN or even create your own … Read more
Any time your traffic goes up your CPU usage will go up. Based on what you’re saying it could be bot activity. I’m also assuming you’re on a shared host that is overloading the server with 10 billion accounts. My suggestions include: Running a virus scan for WordPress via any number of available plugins Minimize … Read more
“squat” is synonymous with “nothing” in this case. So, I’d say: Before you consider using nginx, be aware that PHP APC or a similar opcode cache with a WordPress caching plugin is going to offer significant performance improvements over just switching from Apache to nginx. If you aren’t already using a PHP opcode cache and … Read more