Hidden Treasures

The libiotrace library monitors running, static and dynamically linked programs and collects detailed data for many file-I/O-related function calls.

Gerrit Klein, Philipp Koester, Rainer Keller

Scientific applications can be limited by file I/O because of their distributed nature and implementation of storage. The libiotrace library, extended with ptrace-based syscall tracing, lets users and developers analyze file-I/O-based bottlenecks. LD_PRELOAD Dynamic profiling analyzes a program during runtime, thereby gathering information about resource utilization. Often, you want to know which part of a program causes the highest CPU utilization or which task uses how much memory. This information can be used either to optimize the program or to manage a running system and prevent bottlenecks. You can find a multitude of tools for gathering such data. If the source code of the program is available, you can use a debugger or an instrumentation framework to gather resource usage information. Most compilers offer an instrumenting framework that allows you…

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ADMIN Network & Security (Digital) - 1 Issue, September/October 2022

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