Linux Performance: Why You Should Almost Always Add Swap Space

We know that using swap space instead of RAM can severely slow down the performance of Linux. So then, one might ask, since I have more than enough RAM available, wouldn’t it better to remove swap space completely? The short answer is, No. There are performance benefits when swap is enabled, even when you have more than enough […]

MySQL Performance Tuning: Tips, Scripts and Tools

With MySQL, common configuration mistakes can cause serious performance problems. In fact, if you mis-configure just one of the many config parameters, it can cripple performance! (see examples) Of course, the performance of MySQL is often tied greatly to the efficiency of your MySQL queries. It’s important to ensure that your performance issues are not […]

PHP Performance: Additional CPU cores vs faster CPU cores

Just over a week ago I received a contact form email detailing slow performance issues with a LAMP (Linux, Apache MySQL, PHP) web server. During the audit phase, I found that the server’s load average was pretty idle. However, the website was indeed very slow. Among a slew of other issues and misconfigurations, one aspect of […]

Panopta (exclusive offer) Get Two Free Months

Over the years Panopta has listened to customer feedback and continues to respond with additional development and improvements to their infrastructure, application and network performance monitoring tools. With Panopta you can easily keep an eye on the most fundamental metrics across your complex infrastructure so you can identify the root cause of problems. If you […]

80% of the web powered by PHP

Today, PHP is used by more than 80% of all the websites whose server-side programming language we know. Popular websites such as Facebook, Wikipedia, WordPress.com, Tumblr and this website are all powered by PHP. With such a large share of the web, it may or may not surprise you that more than 90% of PHP based websites […]

Accelerate Time to Value for Log Analytics with the Oracle Management Cloud

Guest post by Philip Brown, Director of Cloud Strategy @ Red Stack Tech. Oracle Management Cloud is the latest innovation from Oracle, a unique on-premise and in cloud suite of monitoring, management and analytics services, meeting the individual needs of each business. This unified suite enables you to improve IT stability, prevent application outages, increase DevOps […]

Linux server performance: Is disk I/O slowing your application?

If your Linux server is bogged down, your first step is often to use the TOP command in terminal to check load averages and wisely so. However, there are times when TOP shows very high load averages even with low cpu ‘us’ (user) and high cpu ‘id’ (idle) percentages. This is the case in the video below, load averages […]

Apache Performance: Disable .htaccess

About 3 years ago I wrote a short blog entry about the very basic Apache configuration mistakes and oversights which developers and server admins of the then $500 million dollar Healthcare.gov website made. Most shocking, were elemental oversights, as if devs were not aware of common best practices. Which brings us to another Apache performance related entry. A while […]