Just in from Slashdot, The final release of Ubuntu 15.04 is now available. A modest set of improvements are rolling out with this spring’s Ubuntu. While this means the OS can’t rival the heavy changelogs of releases past, the adage “don’t fix what isn’t broken” is clearly one 15.04 plays to.
MySql and MariaDB are probably the most popular databases out there for linux based development, however the stock MySql installation in Centos 6 and 7 comes with caching disabled. This results in heavy MySql processor use for sites that start to take off.
We are pleased to announce support for monitoring CGminer in the latest version of LoadAvg! Now you can use LoadAvg as a full fledged monitoring framework for your linux based mining rigs. What is LoadAvg ? LoadAvg is a powerful way to manage load, memory, and resource usage on linux servers, cloud computers and virtual machines – and its open source so no price attached. With the addition of CGminer support, you can now use it as a monitoring tool. We know it has a long way to go compared to other mining monitors, but when coupled with its large […]
We are pleased to announce the release of LoadAvg 2.2. Version 2.2 builds on the core foundation delivered in the 2.0 branch and brings many bug fixes, new features and new plugins to extend its functionality. Version 2.2 cleans up and extends the code in many of the existing charting modules, comes with two new plugins for Alerts management and Process monitoring, and a framework for server side and client side timezone monitoring. It also introduces initial mobile support, and is touch enabled on phones and tablets. By popular request by many of our developers, It also has a bitcoin […]
We are pleased to announce the release of LoadAvg 2.1. Version 2.1 builds on the core foundation delivered in 2.0 but has been significantly re-coded with a true OOP architecture to allow for scaleability and portability. Version 2.1 introduces new modules such as Uptime, Swap and Processor monitoring as well as introduces plugins which can further extend the core framework for process monitoring, etc. It also has new UI updates that allow for drag and drop of modules in the charts, and stores module locations and expand/collapse status using cookies. We have tested this release on NGinx and Lightppd and […]
The joy of profiling! Profiling is a powerful way to fine tune your PHP applications before releases. It helps you to pinpoint loose code and track down computationally expensive loops that can be easily refactored to speed up your application. Since PHP has to load and run your entire application in one go, as opposed to storing parts of your application in memory for re-use, profiling is key to speedy performance and ensuring that your application is not a resource hog. Doing some basic profiling for the upcoming LoadAvg 2.1 release we were able to track down 1 processor intensive […]
Anthony Ferrara, a developer advocate at Google, has published a blog post with some statistics showing the sorry state of affairs for website security involving PHP. After defining a list of secure and supported versions of PHP, he used data from W3Techs to find a rough comparison between the number of secure installs and the number of insecure or outdated installs. After doing some analysis, Ferrara sets the upper bound on secure installs at 21.71%. He adds, “These numbers are optimistic. That’s because we’re counting all version numbers that are maintained by a distribution as secure, even though not all […]
This tutorial covers how to enable Apache server-status (mod_status) with extended status data on Centos servers. This data is useful for Apache profiling and understanding whats happening on your web-server. It allows you to view a detailed status page for your web server which is useful for watching your web server’s performance during load testing or to gather activity data. You can see what server-status looks like here: http://www.apache.org/server-status and extended status looks like this http://www.apache.org/server-status/?auto Make sure mod_status is installed First you need to make sire that mod_Status is installed. This is the apache module that powers server-status. Apache […]
This article discusses iostat and how it can identify I/O-subsystem and CPU bottlenecks. iostat works by sampling the kernel’s address space and extracting data from various counters that are updated every clock tick (1 clock tick = 10 milliseconds [ms]). The results — covering CPU, and I/O subsystem activity — are reported as per-second rates or as absolute values for the specified interval. The iostat tool in a part of the sysstat package, to install it simply type: sudo yum install sysstat or sudo apt-get install sysstat Syntax Normally, iostat is issued with both an interval and a count specified, […]
We are pleased to announce the release of LoadAvg 2.0. Version 2.0 is a rewrite from the ground up and features a completely new framework that has been redesigned with speed and scaleability in mind. Version 2.0 can easily be expanded through the addition of new modules, and currently includes support for monitoring Server Load, Memory, Disk Usage & Swap, Network Bandwidth (across multiple interfaces), Apache Usage, MySql thru-put and SSH access logs. With this new framework in place, we will now start to focus on streamlining the core and adding new features and functionality, including: 1. Alerts and Alarms […]