Apache Performance Tuning: Swap Memory

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Before we get into the details of Apache tuning, we need to understand what happens when a VPS server or Dedicated server goes unresponsive due to a poorly optimized configuration.

An over-tuned server is one that is configured to allow more simultaneous requests (ServerLimit) than the server’s hardware can manage. Servers set in this manner have a tipping point, and once reached, the server will become stuck in a perpetual swapping scenario. Meaning the Kernel is stuck rapidly reading and writing data to and from the system swap file.

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Recommended Production Settings for Cassandra on CentOS 6

Reading Time: < 1 minuteIf you’ve already followed the tutorial on How To Install Cassandra on CentOS 6, then you’re ready for another step!
Pre-Flight Check
  • These instructions are intended for Cassandra 2 on a single CentOS 6 server.
  • I’ll be working from a Liquid Web Core Managed CentOS 6.4 server, and I’ll be logged in as root.
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