Quantcast
Channel: Intel® VTune™ Profiler (Intel® VTune™ Amplifier)
Viewing all articles
Browse latest Browse all 1347

Basic questions about vtune

$
0
0

Does VTune work with using perf?

Can Vtune work on hardware which has not an x86 intel CPU inside, e.g. an embedded Samsung CPU?

I use the analyzer checking tool

Intel(R) VTune(TM) Amplifier Self Check Utility
Copyright (C) 2009-2019 Intel Corporation. All rights reserved.
Build Number: 602217

Instrumentation based analysis check
Example of analysis types: Hotspots with default knob sampling-mode=sw, Threading with default knob sampling-and-waits=sw
    Collection: Ok
    Finalization: Ok
amplxe: Warning: Cannot locate debugging information for file `/opt/intel/vtune_amplifier_2019.6.0.602217/lib64/libtpsstool.so'.
    Report: Ok

HW event-based analysis check (Perf)
Example of analysis types: Hotspots with knob sampling-mode=hw, HPC Performance Characterization, etc.
    Collection: Ok
amplxe: Warning: Access to /proc/kallsyms file is limited. Consider changing /proc/sys/kernel/kptr_restrict to 0 to enable resolution of OS kernel and kernel modules symbols.
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
    Finalization: Ok
    Report: Ok

HW event-based analysis check (Perf)
Example of analysis types: Microarchitecture Exploration
    Collection: Ok
amplxe: Warning: Access to /proc/kallsyms file is limited. Consider changing /proc/sys/kernel/kptr_restrict to 0 to enable resolution of OS kernel and kernel modules symbols.
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
    Finalization: Ok
    Report: Ok

HW event-based analysis with uncore events (Perf)
Example of analysis types: Memory Access
    Collection: Ok
amplxe: Warning: Access to /proc/kallsyms file is limited. Consider changing /proc/sys/kernel/kptr_restrict to 0 to enable resolution of OS kernel and kernel modules symbols.
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
    Finalization: Ok
    Report: Ok

HW event-based analysis with stacks (Perf)
Example of analysis types: Hotspots with knob sampling-mode=hw and knob enable-stack-collection=true, etc.
    Collection: Ok
amplxe: Warning: Access to /proc/kallsyms file is limited. Consider changing /proc/sys/kernel/kptr_restrict to 0 to enable resolution of OS kernel and kernel modules symbols.
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
    Finalization: Ok
amplxe: Warning: Cannot locate debugging information for file `/lib/x86_64-linux-gnu/libgcc_s.so.1'.
    Report: Ok

HW event-based analysis with context switches (Perf)
Example of analysis types: Threading with knob sampling-and-waits=hw
    Collection: Ok
amplxe: Warning: For analyses using the Perf-based driverless collection, the preemption and synchronization context switches may not be differentiated on kernels older than 4.17. To identify the context switch types on such kernels, switch to the driver-based collection by setting the Stack size option to the unlimited (0) value.
amplxe: Warning: Access to /proc/kallsyms file is limited. Consider changing /proc/sys/kernel/kptr_restrict to 0 to enable resolution of OS kernel and kernel modules symbols.
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
    Finalization: Ok
    Report: Ok

The system is ready to be used for performance analysis with Intel VTune Amplifier.
Review warnings in the output above to find product limitations, if any.

But I had to adjust the value in the file perf_event_paranoid to 0

Don't know really what this is needed for, but just found it in a previous run as output:

Please set the /proc/sys/kernel/perf_event_paranoid value to 0 or less to continue without installing the drivers.

 


Viewing all articles
Browse latest Browse all 1347

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>