Tag Archives: server

Logagent: The Swiss Army Knife for Log Processing?

Guest post by Stefan Thies DevOps Evangelist at Sematext Group Inc. Dealing with log files or extracting data from various data sources is a daily task in the IT administration. Users ask about statistics or details of their technical or business operations. The relevant data is often present in log files, databases or message queues. Converting […]

Avoid This When Tuning MySQL Query Cache for Performance

One of the most misconfigured MySQL performance features, is MySQL Query Cache Size. This post references a web server with 32 gigabytes of RAM where the existing config had MySQL’s query cache size set incorrectly to 4 gigabytes. The thought behind it seemed to be that more is better. Since the server has free RAM available, setting MySQL Query Cache […]

Strip Down Apache to Improve Performance & Memory Efficiency

Can you believe that its been 5 years since the release of Apache 2.4?! Still, most Apache based web servers continue to run Apache version 2.2 or even 2.0. This is understandable for the same reasons why Apache web servers are still used more than Nginx… compatibility, official support and features. If you haven’t replaced Apache […]

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 […]

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 […]

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 […]

Your Web Host Doesn’t Want You To Read This: Benchmark Your VPS

Oct 31st 2017: Here’s a list of command line scripts for Linux VPS/Server benchmarking. Nov 2nd 2016: Included quick dd commands to check cached vs uncached disk read performance. This article will highlight using the ‘dd’ Unix command for a quick overview and benchmark of your Linux server or VPS. ‘dd’ requires no downloads and can quickly alert […]

When is it time to add more application monitoring?

Guest post by James Paden, Partner at Instrumental At Instrumental, we often talk about getting started with monitoring. In the past, we’ve covered the critical, but basic, metrics everyone needs on our Ultimate Monitoring Metrics Cheatsheet (many of which are gathered by out-the-box system and service monitoring). We also wrote the Quick-Start Guide to Monitoring […]