GitHub - holyjak perfstats-lib: Minimalistic library for collecting and . . . Perfstats-lib is a light-weight, minimalistic, low-overhead library for collecting and publishing performance statistics in production systems, written in Java Calls to the library can be performed manually but are expected to be injected automatically to the production code via AOP
Getting accurate time measurement with `perf-stat` To do that I run perf-stat at high priority to avoid context switching So I come up with something like that: sudo chrt -f 99 perf stat -e cs -e cpu-clock hello_c However, the results I get for the same program differ significantly For instance the result for the same C compiled executable can be:
linux - perf stat for part of program - Stack Overflow You can try some library like libpfm4 or PAPI (which may use libpfm4) to do hardware performance counting from your program They will program perf_event_open for you, libpfm4 also has tables of event names, and there are some programming ways to use env vars cmdline args to specify the event names
How to collect performance data when Perfstat8 fails by using preset . . . Perfstat8 should only be collected on Data ONTAP 8 2 or if directed by Support, and perfstat7 for Data ONTAP 8 7-mode See the perfstat omnibus for download links and directions for your operating system Perfstat8 can have issues collecting against a cluster with one or more nodes under CPU pressure or due to network issues
performance - Interpretation of perf stat output - Stack Overflow After IPC you need to check branch misses and L1 misses (data and code) because those generate most penalties A final suggestion: you may be interested in trying Intel's vTune Amplifier It gives a much better explaining on the metrics and points you to the eventual problems in your code
7. Measuring performance — Processor SDK AM62Ax Documentation Perf-stats tool is a simple cpp application which prints stats on the terminal and updates it every second To use this tool, it needs to be compiled and run in a parallel ssh terminal along with the application For detailed instructions please refer to perf-stats readme below is the sample output of the tool ====================
Create a lightweight perfstats scritp that does not use tempdb When troubleshooting tempdb issues, we do not get perfstats to run frequently enough since perfstats uses tempdb so heavily We need to create a light weight version of perfstats that can be run on this type of scenarios