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https://stackoverflow.com/questions/11440182/event-based-sampling-with-the-perf-userland-tool-and-pebs
I'm doing event-based sampling with the perf userland tool: the objective being trying to find out where certain performance-impacting events like branch misses and cache misses are occurring on a larger system I'm working on. Now, something like. perf record -a -e branch-misses:pp -- sleep 5
https://github.com/lede-project/source/commit/f50079985c97404d62a208f2937ad6afd3f07f0f
In this repository All GitHub ↵ Jump to ... (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? Make sure this functional dependency is captured. Signed-off-by: Florian Fainelli <[email protected]> ... = +libelf1 +libdw +libpthread +librt +objdump @!LINUX_3_18 @!IN_SDK @!TARGET_arc770 ...
https://github.com/brendangregg/perf-tools/issues/76
@brendangregg when i perf record or perf top -p pid Error: The sys_perf_event_open() syscall returned with 3 (No such process) for event (cycles:ppp). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? but Not for all of the process
https://stackoverflow.com/questions/53374880/perf-error-the-sys-perf-event-open-syscall-returned-with-22-invalid-argument
Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (msr/tsc/). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? How can I check No CONFIG_PERF_EVENTS=y kernel support configured…
https://unix.stackexchange.com/questions/13939/how-to-check-that-perf-events-are-enabled-in-linux-kernel-and-how-to-install-pe
From what I have checked it looks like kernel side of 'perf' subsystem is enabled on computer I work on. Checking kernel configuration shows the following $ zgrep "_PERF[_= ]" /proc/config.gz CONFIG_HAVE_PERF_EVENTS=y CONFIG_PERF_EVENTS=y # CONFIG_PERF_COUNTERS is not set CONFIG_HAVE_PERF_EVENTS_NMI=y
https://lore.kernel.org/patchwork/patch/742970/
Dec 12, 2016 · perf record: Allow to ignore missing pid ... syscall returned with 3 (No such process) for event (cycles:ppp). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? ... (cycles:ppp). > /bin/dmesg may provide additional information. > No CONFIG_PERF_EVENTS=y kernel support configured? > [root@jouet ...
https://devtalk.nvidia.com/default/topic/1024150/general/how-to-install-perf-environment/
May 10, 2019 · I downloaded a similar linux kernel and compiled perf and tried to run it and got this Error: The sys_perf_event_open() syscall returned with 16 (Device or resource busy) for event (cycles:u). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? It sounds like something that could be changed on the ...
https://lkml.org/lkml/2016/4/22/517
Apr 22, 2016 · In our perf implementation we set PERF_PMU_CAP_NO_INTERRUPT flag so core perf infrastructure knows we don't have interrupts. ... No CONFIG_PERF_EVENTS=y kernel support configured? ... CONFIG_PERF_EVENTS is selected but still there's a problem while existing suggestion barely makes any sense.
https://lkml.org/lkml/2018/9/19/853
Sep 19, 2018 · >> This patch adds CPU hotplug support where the PMU migrates the context to >> another online CPU when its CPU is offline. >> It fixes the below issue where the user does offline the CPU which is assignedAuthor: Hoan Tran <>
http://lkml.iu.edu/hypermail/linux/kernel/1307.2/04310.html
Subsequent invocations of perf fail with: The sys_perf_event_open() syscall returned with 19 (No such device) for event (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? Add ENODEV to the list of errno's to fallback to cpu-clock. Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
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