Tools and techniques for performance tuning in Linux
Tune up your systems and search out bottlenecks with these handy performance tools.
Over the past several years, the Linux Kernel Performance Project  has tracked the performance of Linux and tuned it for throughput and power efficiency on Intel platforms. This experience has given us some insights into the best tools and techniques for tuning Linux systems. In this article, we describe some of our favorite Linux performance utilities and provide a real-world example that shows how the Kernel Performance Project uses these tools to hunt down and solve a real Linux performance issue.
The first task in performance tuning is to identify any bottlenecks that might be slowing down system performance.
The most common bottlenecks occur in I/O, memory management, or the scheduler. Linux offers a suite of tools for examining system use and searching out bottlenecks. Some tools reveal the general health of the system, and other tools offer information about specific system components.
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