Tag Archives: performance

Alternatives to top and htop

We’ve covered top, atop and indirectly due to it’s popularity as top’s alternative… htop (the last screenshot).  But are there any others worth looking at? That was the question today in the ask.haydenjames.io Linux forum. This is largely a matter of preference regarding what data is most important to you as it pertains to system healthy […]

PHP memory_limit – a *per-script* setting

What happens when your web host blames PHP memory_limit setting for memory usage issues on a Linux web server. This happened recently and although PHP’s memory limit was set to 1GB (very high) that does not mean that scripts were using 1GB. Let’s take a quick look at understanding PHP’s memory_limit setting. PHP memory_limit is a per-script […]

50 Top Server Monitoring & Application Performance Monitoring (APM) Solutions

August 6th 2017 Update: This list now contains 70 Top Server Monitoring & Application Performance Monitoring (APM) Solutions. Back in 2014, I compiled a list of the top 20 server performance monitoring solutions. Largely because I already had a list saved locally for my own reference. Sharing that list publicly was a great way to gain feedback and recommendations on […]

Does your Linux server need a RAM upgrade? Lets check with free, top, vmstat and sar.

Based on the output of ‘free -m’ on a 1GB VPS and taking into consideration the amount of swap space in use – details below – a RAM upgrade was necessary. Required was a minimum of 3GB of RAM multiplied by 2 = 6GB. This ensures that there’s adequate memory available for buffers/cache. There’s  This article will walk you though […]