Post thumbnail of Brute force restarting of services on a machine under heavy load in response to the slashdot effect
30 October 2009
Continue reading Brute force restarting of services on a machine under heavy load in response to the slashdot effect

Brute force restarting of services on a machine under heavy load in response to the slashdot effect

So, for a single core single processor machine a load average of 1 means that on average there’s a process in the running or runnable state at all times. This means the CPU average is at 100% too. If another process wants to run, it has to wait in the queue before being executed. For a multi-core or multi-processor system, you’re not CPU bound until the load average equals the total number of cores. You can calculate a system’s CPU utilization by dividing the load average by the number of processors you see in /proc/cpuinfo

Post thumbnail of Fedora 10 Default Services
2 February 2009
Continue reading Fedora 10 Default Services

Fedora 10 Default Services

Fedora 10 Default Services

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Post thumbnail of How to automate just about anything using cron jobs
24 November 2008
Continue reading How to automate just about anything using cron jobs

How to automate just about anything using cron jobs

Cron is so simple yet so useful I think it’s often unappreciated! Being able to toss a command into a cron, or execute a script at specific times of the day, days of the week, etc. That’s good stuff!

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Post thumbnail of Use FSVS to keep track of Linux server configuration changes
14 October 2008
Continue reading Use FSVS to keep track of Linux server configuration changes

Use FSVS to keep track of Linux server configuration changes

FSVS is the abbreviation for “Fast System Versioning” and is pronounced [fisvis].
It is a complete backup/restore/versioning tool for all files in a directory tree or whole filesystems, with a subversion repository as the backend. 
Using this application, all files(almost) in /etc/ are maintained in a subversion repository. As files get created …

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Post thumbnail of Make a multi-polaroid image out of jpeg’s with ImageMagick’s Montage
23 September 2008
Continue reading Make a multi-polaroid image out of jpeg’s with ImageMagick’s Montage

Make a multi-polaroid image out of jpeg’s with ImageMagick’s Montage

You can take several regular pictures or other image files and put them together into one image that looks like they’re all polaroids laid out on a desk using ImageMagick’s montage tool.  If you have a dual monitor setup you can easily fit 8 across your screens at once without …

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