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stackoverflow.com › questions › 11921842 › read-and-parse-perf-data

There is builtin perf.data parser and printer in perf tool of linux tools with subcommand "script".

To convert perf.data file

perf script > perf.data.txt

To convert output of perf record in other file (perf record -o filename.data) use -i option:

perf script -i filename.data > filename.data.txt

perf script is documented at man perf-script, available online at http://man7.org/linux/man-pages/man1/perf-script.1.html

   perf-script - Read perf.data (created by perf record) and display
   trace output

   This command reads the input file and displays the trace recorded.

       'perf script' to see a detailed trace of the workload that was
       recorded.

Answer from osgx on Stack Overflow

Brendan Gregg

brendangregg.com › perf.html

Linux perf Examples

A perf record command was used to trace the block:block_rq_issue probe, which fires when a block device I/O request is issued (disk I/O). Options included -a to trace all CPUs, and -g to capture call graphs (stack traces). Trace data is written to a perf.data file, and tracing ended when Ctrl-C ...

Stack Overflow

stackoverflow.com › questions › 11921842 › read-and-parse-perf-data

linux - Read and parse perf.data - Stack Overflow

Videos

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Fastware - perf - How to analyse the performance of my program! ...

March 13, 2021

36:57

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Linux Performance Analysis Tools AKA Perf Tools 2022_10_08_01:26:17 ...

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Introduction to Perf - Linux Performance Analysis - YouTube

man7.org › linux › man-pages › man1 › perf-data.1.html

perf-data(1) - Linux manual page

Data file related processing. convert Converts perf data file into another format.

Red Hat

docs.redhat.com › en › documentation › red_hat_enterprise_linux › 8 › html › monitoring_and_managing_system_status_and_performance › recording-and-analyzing-performance-profiles-with-perf_monitoring-and-managing-system-status-and-performance

Chapter 21. Recording and analyzing performance profiles with perf | Monitoring and managing system status and performance | Red Hat Enterprise Linux | 8 | Red Hat Documentation

You can use the perf tool to record performance data into a perf.data file to be analyzed on a different device. ... You have the perf user space tool installed as described in Installing perf.

Nagios

assets.nagios.com › downloads › nagioscore › docs › nagioscore › 3 › en › perfdata.html

Performance Data

Everything after the pipe character is considered to be the plugin-specific performance data and will be stored in the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro · In the example above, the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macro would contain "PING ok - Packet loss = 0%, RTA = 0.80 ms" (without quotes) and the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro would contain "percent_packet_loss=0, rta=0.80" (without quotes). Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation.

GitHub

github.com › mstange › linux-perf-data

GitHub - mstange/linux-perf-data: A parser for the perf.data format · GitHub

The data section contains the main content of the file: a sequence of records. There are two types of records: event records from the kernel, and "user records" from perf / simpleperf.

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GitHub

github.com › torvalds › linux › blob › master › tools › perf › Documentation › perf.data-file-format.txt

linux/tools/perf/Documentation/perf.data-file-format.txt at master · torvalds/linux

On a high level perf.data contains the events generated by the PMUs, plus metadata.

Author torvalds

Linux Man Pages

linux.die.net › man › 1 › perf-report

perf-report(1): Read perf.data/display profile - Linux man page

This command displays the performance counter profile information recorded via perf record.

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GitHub

github.com › benjamingroeber › perfdata

GitHub - benjamingroeber/perfdata: Parsing and creating monitoring check performance data from and for monitoring engines

This library was created to fit basic needs for parsing and creating Performance Data commonly used by check commands from monitoring engines like Icinga2 or Nagios.

Author benjamingroeber

Red Hat

docs.redhat.com › en › documentation › red_hat_enterprise_linux › 10 › html › monitoring_and_managing_system_status_and_performance › recording-and-analyzing-performance-profiles-with-perf

Chapter 13. Recording and analyzing performance profiles with perf | Monitoring and managing system status and performance | Red Hat Enterprise Linux | 10 | Red Hat Documentation

A perf.data file is stored in the current directory. You have the root access, if the perf.data file was created with root access.

GitHub

github.com › KDAB › hotspot

GitHub - KDAB/hotspot: The Linux perf GUI for performance analysis. · GitHub

To do off-CPU analysis with Hotspot, you need to record the data with a very specific command: perf record \ -e cycles \ # on-CPU profiling -e sched:sched_switch --switch-events \ # off-CPU profiling --sample-cpu \ # track on which core code is executed -m 8M \ # reduce chance of event loss --aio -z \ # reduce disk-I/O overhead and data size --call-graph dwarf \ # we definitely want backtraces <your application>

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Super User

superuser.com › questions › 456234 › read-and-parse-perf-data

linux - Read and parse perf.data - Super User

Top answer

1 of 1

There is builtin perf.data parser and printer in perf tool of linux tools with subcommand "script".

To convert perf.data file

perf script > perf.data.txt

To convert output of perf record in other file (perf record -o filename.data) use -i option:

perf script -i filename.data > filename.data.txt

perf script is documented at man perf-script, available online at http://man7.org/linux/man-pages/man1/perf-script.1.html

   perf-script - Read perf.data (created by perf record) and display
   trace output

   This command reads the input file and displays the trace recorded.

       'perf script' to see a detailed trace of the workload that was
       recorded.

Output of perf script are ASCII text readable by human. But they may be not easy to be parsed by scripts. perf script -D will show how individual events are stored in hex.

Maine

web.eece.maine.edu › ~vweaver › projects › perf_events › perf_data

Parsing the perf_event perf.data file format

The perf tool stores sampled data in the perf.data format. This can be used by perf report and possibly other tools for analysis. The perf.data file format is complex. I have been working on updating the tools/perf/Documentation/perf.data-file-format.txt found in the Linux kernel tree which seems to be the most up-to-date source of the file layout.

Arch Linux Man Pages

man.archlinux.org › man › perf-data.1.en

perf-data(1) — Arch manual pages

Data file related processing. ... Converts perf data file into another format.

Red Hat

docs.redhat.com › en › documentation › red_hat_enterprise_linux › 8 › html › monitoring_and_managing_system_status_and_performance › monitoring-application-performance-with-perf_monitoring-and-managing-system-status-and-performance

Chapter 23. Monitoring application performance with perf | Monitoring and managing system status and performance | Red Hat Enterprise Linux | 8 | Red Hat Documentation

You can use perf report to display and analyze a perf.data file.

Python documentation

docs.python.org › 3 › howto › perf_profiling.html

Python support for the Linux perf profiler — Python 3.14.6 documentation

perf inject --jit command will read perf.data, automatically pick up the perf dump file that Python creates (in /tmp/perf-$PID.dump), and then create perf.jit.data which merges all the JIT information together. It should also create a lot of jitted-XXXX-N.so files in the current directory which are ELF images for all the JIT trampolines that were created by Python. ... When using --call-graph dwarf, the perf tool will take snapshots of the stack of the process being profiled and save the information in the perf.data file.

Linux Man Pages

man7.org › linux › man-pages › man1 › perf-report.1.html

perf-report(1) - Linux manual page

This command displays the performance counter profile information recorded via perf record. -i, --input= Input file name. (default: perf.data unless stdin is a fifo) -v, --verbose Be more verbose. (show symbol address, etc) -q, --quiet Do not show any warnings or messages.

LWN.net

lwn.net › Articles › 644919

perf.data file format specification draft [LWN.net]

Thanks, -Andi --- perf.data format This document describes the on-disk perf.data format, generated by perf record or perf inject and consumed by the other perf tools. On a high level perf.data contains the events generated by the PMUs, plus metadata. All fields are in native-endian of the machine ...

Ubuntu

manpages.ubuntu.com › trusty › man(1)

Ubuntu Manpage: perf-report - Read perf.data (created by perf record) and display the profile

Use the addresses of sampled taken branches instead of the instruction address to build the histograms. To generate meaningful output, the perf.data file must have been obtained using perf record -b or perf record --branch-filter xxx where xxx is a branch filter option.

reddit.com › r/linuxquestions › perf data information

r/linuxquestions on Reddit: perf data information

March 6, 2024 -

Hi guys i am new to profiling and perf command and i was wondering what all these data i am getting from when i run
"perf record -g ./app"

"perf script > out.perf"

like what is the "382158" and cycles:p are if there is any refrence for this please help me out