Plugin Awareness (Problem Plugin List)

[Tyler Martin]

CPU Resources are the main concern here... WordPress can get a bad name running on shared hosts (with limited CPU resources) and often it is due to plugins (which are not part of WordPress).

You need to beware of plugins, they can enhance your site, but can just as easily take it down. I suggest running as minimal amount of them as possible, specifically on shared or limited resource hosting. Carefully research plugins before trusting them on your live site. Anyone can write a plugin and post it for you to download, there is no set of standards for them to meet. They most likely were not able to be tested on live high-traffic sites.

Some plugins are going to be more resource intensive than others of course. Consider what the plugin is doing (what it's processing, how much it would be accessing the database, and if it runs for every pageload of the site for every visitor). Stats plugins for instance, tend to be pretty resource heavy (best to use offsite stats services). However, plugins that provide extra management on the administration side (like ComicPress Manager) are most likely going to be okay since they don't run for every site visit.

Maybe consider launching a new WordPress site nice and clean, with just our Must-Have Plugins list. I've seen people launch with 20 plugins running right at the start and it be a mess. Better to test and add functionality/features as you go. Easier to catch a problem plugin. Especially if you are paying less than $10 a month for hosting, you are going to have to come to terms with the fact that you are going to have some limitations (enjoy the affordable price over limitless site feature possibilities).

PROBLEM PLUGIN LIST
Here's a list of plugins we've seen cause excessive load or complications on the server. Feel free to add your own bad experience with a plugin. This is not a list of do-not-use plugins, we've just seen them not perform well in some situations so you should be aware of that from the start. I'm sure the developers have worked hard at them, and high resources is just the nature of some processes. These are plugins to keep your eye on should you choose to run them. It could even be a matter of them misbehaving with another plugin running (but that's still misbehaving).

Twitter Tools
This is a popular plugin but I've read so much bad about it. It's trying to do so much. In personal experience I've seen it run on a site, the server was reporting 5 times the access to index.php. There are some simpler Twitter plugins if you are just interested in cross-posting.

StatPress / StatPress Reloaded
Again, the plugin requires excessive CPU. Use offsite stat service like Google Analytics or Statcounter.com or something similar.

FeedStats
Causing excessive database load/connections resulting in a lost database connection. Use offsite stat service like Feedburner.

WP E-Commerce
This is a known issue, it changes reporting a page on your site from running 35 queries, to running nearly 400 queries and causing about double the server load, affects the entire site and not just store pages.

Related Posts Plugin
This may have just been an isolated incident, but with ComicPress 2.5 this plugin was duplicating posts in the feed, even when the feed aspect of the plugin was disabled.

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[Townie]

[Kristina19]

Ya exactly.......adding pluggins are really good to use but that makes your site slow so it is good to avoid more and more plug ins to site and be little choosy about them and go for only most suitable plugins that canbe manageble........
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[Frumph]

The Sociable plugin leaks so that the comments go to the wrong post, if sociable is in the Comic Post on the index page.

[seraulu1]

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