An Expert Guide to Software Performance Optimization From mobile
and cloud apps to video games to driverless vehicle control, more
and more software is time-constrained: It must deliver reliable
results seamlessly, consistently, and virtually instantaneously. If
it doesn't, customers are unhappy--and sometimes lives are put at
risk. When complex software underperforms or fails, software
engineers need to identify and address the root causes. This is
difficult and, historically, few tools have been available to help.
In Understanding Software Dynamics, performance expert Richard L.
Sites tackles the problem head on, offering expert methods and
advanced tools for understanding complex, time-constrained software
dynamics, improving reliability and troubleshooting challenging
performance problems. Sites draws on several decades of experience
pioneering software performance optimization, as well as extensive
experience teaching graduate-level developers. He introduces
principles and techniques for use in any environment, from embedded
devices to datacenters, illuminating them with examples based on
x86 or ARM processors running Linux and linked by Ethernet. He also
guides readers through building and applying a powerful, new,
extremely low-overhead open-source software tool, KUtrace, to
precisely trace executions on every CPU core. Using insights
gleaned from this tool, readers can apply nuanced solutions--not
merely brute-force techniques such as turning off caches or cores.
Measure and address issues associated with CPUs, memory, disk/SSD,
networks, and their interactions Fix programs that are always too
slow, and those that sometimes lag for no apparent reason Design
useful observability, logging, and time-stamping capabilities into
your code Reason more effectively about performance data to see why
reality differs from expectations Identify problems such as excess
execution, slow instruction execution, waiting for resources, and
software locks Understanding Software Dynamics will be valuable to
experienced software professionals, including application and OS
developers, hardware and system architects, real-time system
designers, and game developers, as well as advanced students.
Register your book for convenient access to downloads, updates,
and/or corrections as they become available. See inside book for
details.
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