How “Niceness” impacts shared servers!

A very well known word in linux server is “nice” value. I have seen many people discussing about the effectiveness of Apache/Mysql tweaking, but eventually, if the throughput of your linux system isn’t good enough, apahce/mysql tweaking can fail. In this article, I am going to try explaining how “Nice” value of linux system can impact the performance of linux shared servers.

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How to stop wp-cron.php from firing!

Recently, I have written an article about reducing the cpu usage for a wordpress blog. My post contains some information about the wp-cron.php, but it doesn’t explain how you can stop wp-cron.php from taking high CPU. Couple of our twitter followers and facebook clients were asking for a post describing how they can stop wp-cron.php from taking high CPU or firing up. Here are some small tricks to reduce the CPU usage from wp-cron.php.

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Misconception about Server Specification!

“Oh! Damn! That server seems pretty cheap, giving me 12GB RAM, dual intel xeon 5430, so, lets go and purchase it” – a  big misconception to judge a server specification looking at their cpu and the ram size in current web hosting industry. I have been playing a lot in Webhostingtalk and some other hosting forums these days and found people are asking the same question everyday, which server is going to be right for me. Here I will go through some basic idea why the idea of users are biasing everyday and how to judge a proper server specification.

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Reducing CPU usage for WordPress users!

WordPress is one of the most demanding content management system of recent days. Most of the users these days use wordpress for their blogs or websites. Around 85% sites of our servers are using wordpress and most of the clients are utilizing multiple wordpress blogs for their business. WordPress has been found to be using pretty good sum of CPU and Memory. Today’s shared hosting environments are more limited based on the CPU and memory rather than the Space and Bandwidth. It is always a wiser choice to spend little amount of time to reduce the overall cpu usage. This makes the blog running faster and hosting companies feel good to host sites which are nicer to their CPUs 🙂 Here are some tips to reduce the CPU usage on a wordpress blog and improve the site performance.

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Confusing server load average explained!

Server load average is a pretty big word in web hosting industry. Customers trust servers with least CPU load. Moreover, I have seen they feel very secure when they are on a server averaging a cpu load lesser than 1. I am very familiar with a question on live chat desk from the new customers saying, what is your average cpu load. Now let me go into deeper in this discussion and see if I can find something new for you.

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Rsync with Custom SSH Port

We are running R1Soft as our backup software for last 4 months. We have converted almost all of our servers into R1Soft. But we still have couple of very old server (Aging 4 years) who are using Rsync. We have recently moved our backup server and found that changing the SSH port for the backup server was necessary. By default, rsync command won’t work with custom SSH port as it assume the SSH port is set to 22. To use a custom port you need to use the attribute ‘-e’. Here is an example of using Rsync with Custom SSH port 2287:

rsync -vrplogDtH -e “ssh -p 2287” /home root@76.76.76.76:/backup/

Just posted it thinking it might be useful for some users 🙂