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strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
Dynatrace - Cloud-based quality testing, performance monitoring and analytics for mobile apps and websites. Get started with Keynote today!
ftrace - A function tracer for the Linux kernel.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Valgrind - Valgrind is an instrumentation framework for building dynamic analysis tools.