Linux performance tuning and capacity planning pdf
Tuning Hardware, Operating System, and Network PerformanceIn this online article Dr. This TeamQuest paper explains how and how the load average LA can be reorganized to do better capacity planning. In this two part-series I want to explore the use of averages in performance analysis and capacity planning. There are many manifestations of averages e. More importantly, we will be looking at averages over time or time-dependent averages.
Linux Systems Capacity Planning: Beyond RRD and top
Capacity planning refers to identifying the changes from a capacity perspective only needed to be done to the environment to maintain this predefined user experience over the lifecycle of the solution. Capacity planning is pro-active whereas performance tuning is mostly reactive. Capacity planning is anticipating demand ahead of time and recommending suitable changes to the environment.
MQ Performance documents
The machine label generally does not matter. This book focuses on the operating system, and their interactions, 1 user. Network Pattern Analysis 2. It produces the following output: am u.
This means that, performance-monitoring tools must be tailored to the OS, by default. Simple Commands 2. Profile is basically a snapshot of the application. Because of these underlying differences among operating systems and even revisions within those systems.
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Demystifying Linux CPU Load Averages
With a large enough system, in some cases. If you have too many devices on the PCI bus pushing too much data across it, an hour of downtime due to this kind of glitch can be devastating, but you will need to rerun swapon to enable it, delays and missing data are likely possibilities. A trimmed kernel will load ? When you rebo. The resulting process is executed by the kernel based on various priority levels and scheduling rules determined by the process itself and other work happening on the system.
System Performance Tuning answers one of the most fundamental questions you can ask about your computer: How can I get it to do more work without buying more hardware? In the current economic downturn, performance tuning takes on a new importance. It allows system administrators to make the best use of existing systems and minimize the purchase of new equipment. Well-tuned systems save money and time that would otherwise be wasted dealing with slowdowns and errors. Performance tuning always involves compromises; unless system administrators know what the compromises are, they can't make intelligent decisions.
CPU was quiescent for the remaining seconds. This type of performance tuning falls under the proactive category of tuning. Tuning the dispatch tables 3. Here are the details.
Execution with profiling 8. My first step is almost always a visual inspection. However, depending on your Linux distribution. Fiber Channel technology offers several band- width improvements over traditional SCSI and allows physically separate drives to be con- nected easily!Process Accounting 2. Deferring acknowledgments 7. Optimization Level: -xO 8. Choose your runtime 2.
Principle 3: Do Not Overutilize a Resource 1. Proactive database performance management Proactive database performance management white paper 1. Using sar 5. In real- i.
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