OProfile is a profiling system for systems running Linux 2.2, 2.4, and 2.6. Profiling runs transparently in the background and profile data can be collected at any time. OProfile makes use of the hardware performance counters provided on Intel, AMD, and other processors, and uses a timer-interrupt based mechanism on CPUs without counters. OProfile can profile the whole system in high detail.
Questions tagged [oprofile]
78 questions
0
votes
1 answer
PMU Cache Events on Intel i7 (Ivy Bridge)
I'm using Oprofile to profile some benchmarks, I'm looking specifically for caching issues. I'm with the Intel SDM Volume 3 (from March 2013) as my guide for choosing what events to monitor... however it's being a pain..
The computer I'm doing the…
JohnTortugo
- 6,356
- 7
- 36
- 69
0
votes
1 answer
oprofile 0.9.8 failing under Ubuntu 12.10 with Pentium D
I am trying to use oprofile 0.9.8 under Ubuntu 12.10 running on a Pentium D processor (Dell OptiPlex-GX620 desktop). When I try something simple like "operf ls" I get
perf_event_open failed with Invalid argument
Caught runtime_error: Internal Error.…
Denham Reynolds
- 1
- 2
0
votes
1 answer
The "%" column of opreport always shows 0.0000
I am using oprofile to tune the performance of my application.
Below is how I collected the profiling data:
platform info: virtual machine (KVM-based), linux kernel 2.6.21, x86 64bit,
1. opcontrol --init
2. opcontrol --no-vmlinux -p library -c…
lws
- 21
- 3