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Running Systems

(and me chasing them)

Running Systems
Running Systems
(and me chasing them)

performance impact

General Hardware | Linux | Scripting/Programming

New version of Cacti, and using spine

Byetzion 21/01/2008

A while ago, a newer version of Cacti became available through Dag’s RPM repository. An upgrade went without any special events, and was nothing to write home about. A failure in one of my customer’s Cacti system lead me to test the system using “spine” – the “cactid” new generation. I felt as if it…

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Linux

Misconfigured Amavisd and its impact

Byetzion 19/06/2007

As an administrator, I am responsible for many setups and configurations, sometimes hand tailored to supply an answer to a set of given demands. As a human, I err, and the common method of verifying that you have avoided error is by answering this simple rule: “Does it work after these changes?” In the world…

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Disk Storage | Linux

Linux LVM performace measurement

Byetzion 10/06/2007

Modern Linux LVM offers great abilities to maintain snapshots of existing logical volumes. Unlike NetApp “Write Anywhere File Layout” (WAFL), Linux LVM uses “Copy-on-Write” (COW) to allow snapshots. The process, in general, can be described in this pdf document. I have issues several small tests, just to get real-life estimations of what is the actual…

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