Stack Overflow
Stack Overflow

Questions tagged [perf]

Perf is a profiler tool for Linux 2.6+ based systems.

Perf is a profiling tool for Linux 2.6+ based systems that uses the perf_events kernel interface to provide a command-line interface to underlying hardware, software and kernel performance counters. It abstracts away differences in performance counters implemented across different CPU architectures, allowing consistency across different hardware.

See also the perf wiki.

802 questions
-1
votes
1 answer

what are the reasons for variance in performance measurement of android app

I want to track the boot time and time for certain operations of my app on android. I am using the code markers approach to measure time for all the basic operations in my app. I have inserted some code markers at various places in code. I record…
Arpit Aggarwal
  • 743
  • 7
  • 17
-1
votes
1 answer

How to install man page for "perf" tool on RHEL?

I'm running rhel 5.7 and found there's no man page for "perf". How can I install one, any package name or yum name contains "perf"?
Hind Forsum
  • 8,077
  • 8
  • 40
  • 88
-1
votes
1 answer

What is the proper way to install an ubuntu kernel?

Some suggest with apt-get install, while others with dpkg -i *.deb after downloading the necessary files. I mostly use the latter approach without knowing the difference with the former. Can someone highlight the difference between the two command…
Courier
  • 888
  • 2
  • 11
  • 30
-1
votes
3 answers

Can not use Linux perf because your Linux kernel does not support PERF_COUNT_HW_REF_CPU_CYCLES event

I just want a information about linux "perf" for virtual environment. I am trying to get perf stat -e cycles "my process", so when i run this command on my VM(which is running on top of Vmware5.1)i got the message like.. /not supported> cycles …
Sakthivel Thandabani
  • 73
  • 9
-1
votes
2 answers

Yum install can't find perf library

I am trying yum install perf(this tool), but I get: Loaded plugins: downloadonly, fastestmirror, security Loading mirror speeds from cached hostfile Setting up Install Process No package perf available. Error: Nothing to do My OS details: Linux…
eddyP23
  • 4,745
  • 4
  • 29
  • 63
-1
votes
1 answer

Understand results from perf on CentOS 7

I am trying to get some profiling results for an MPI application. I used perf report command on CentOS 7. I searched online and found some wiki for perf, but I still couldn't find the meaning of the first three columns.
Zack
  • 909
  • 2
  • 9
  • 24
-2
votes
1 answer

Different ISA binary profiling results contradiction

I am doing profiling of my code written in CPP targeting RISC architecture. I have two binaries generated one for x86 and other for RISC-V. I have done profiling using perf and gprof. As per Theory of RISC and CISC architecture,but what I have got…
Yulia
  • 51
  • 6
1 2 3
…
53
54