kohashi

WPPerformanceTester was written as a tool to benchmark WordPress in the <a href="http://reviewsignal.com/blog/2015/07/28/wordpress-hosting-performance-benchmarks-2015/" rel="nofollow ugc">WordPress Hosting Performance Benchmarks (2015)</a> by <a href="http://reviewsignal.com" rel="nofollow ugc">Review Signal</a>. Current benchmarks are on <a href="https://wphostingbenchmarks.com" rel="nofollow ugc">WPHostingBenchmarks.com</a>. It was designed to test the server’s performance by stressing PHP, MySql and running $wpdb queries.
WPPerformanceTester performs the following tests
<ul>
<li>Math – 100,000 math function tests</li>
<li>String Manipulation – 100,000 string manipulation tests</li>
<li>Loops – 1,000,000 loop iterations</li>
<li>Conditionals – 1,000,000 conditional logic checks</li>
<li>MySql (connect, select, version, aes_encrypt) – basic mysql functions and 5,000,000 AES_ENCRYPT() iterations</li>
<li>\$wpdb – 250 insert, select, update and delete operations through \$wpdb</li>
</ul>
It also allows you to see how your server’s performance stacks up against our industry benchmark. Our industry benchmark is the average of all submitted test results.
<h3>Notes on Performance</h3>
Performance can be measured in a lot of ways. WPPerformanceTester was simply one component of a much larger performance benchmark. It tests a single server (or node) that it is running on. So if you’re considering looking at the results from a clustered or distributed setup, it may give you limited insight into how well your whole system performs. WPPerformanceTester is about the raw speed a system has to execute code and perform database operations.
Real website performance isn’t always correlated with raw speed. A seemingly slow website could have a very fast WPPerformanceTester result. There are lots of layers (namely caching) in making a WordPress website fast. A good caching layer will almost always outperform computing power. But when the caching layers are equal, raw speed can make a difference.
WPPerformanceTester is simply one tool to add to your toolkit in measuring performance. You should have a variety of others to test other facets of performance.
<h3>Known Issues</h3>
If the script times out (max_execution_time limit) it will not show any results. You can solve this by increasing the max_execution_time in the php.ini. Some plugins may also cause WPPerformanceTester to run exceptionally slow and make it more likely to hit this limit. One such plugin is VersionPress. You can temporarily disable plugins that might be interfering with it as an alternative way to run it.
<blockquote>
Note:
<ul>
<li>It’s always best to BACKUP EVERYTHING before running ANY new plugin or making changes to your WordPress install.</li>
</ul>
</blockquote>

WPPerformanceTester

WPPerformanceTester benchmarks your server's performance through a variety of PHP, MySql and WordPress tests

Aleksei Znaev

Plugin for measuring hosting benchmarks stability in time. 
It uses several benchmarks to find out is your hoster stable or not. Like,
<ol>
<li>CPU test</li>
<li>Disk test</li>
<li>Database test</li>
</ol>
The plugin stores benchmarks results and displays detailed graph for every benchmark. The graph shows hosting performance peaks and dips. 
Many peaks and dips mean low hosting stability. You can use this in hosting support conversations.
The plugin uses this <a href="https://github.com/hostingstabilitymeter/php-benchmarks-library" rel="nofollow ugc">benchmarks library</a>. 
Each benchmark takes no more that 1 second. You fully control benchmarks calls frequency.
The plugin may inform you about performance lacks by e-mail. 
Also it may send stability benchmark results to <a href="https://HostingStabilityMeter.Com" rel="nofollow ugc">HostingStabilityMeter.Com</a> if you allow. It helps to maintain a rating of hosters.
Note: <a href="https://HostingStabilityMeter.Com" rel="nofollow ugc">HostingStabilityMeter.Com</a> will never publish or give somebody neither your benchmark results nor hardware information.

Hosting Stability Meter

Benchmarks stability measuring in time. Detailed interactive graph for hosting performance peaks and dips let you know hosting is good or bad.

WPPerformanceTester vs Hosting Stability Meter