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Diffstat (limited to 'development/perf/README')
| -rw-r--r-- | development/perf/README | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/development/perf/README b/development/perf/README index 28fa61b406..1ec21e6c9e 100644 --- a/development/perf/README +++ b/development/perf/README @@ -1,10 +1,25 @@ perf is a userspace interface to the kernel's perf events. Performance -counters are CPU hardware registers that count hardware events such as -instructions executed, cache-misses suffered, or branches mispredicted. They -form a basis for profiling applications to trace dynamic control flow and -identify hotspots. - -Please note that this SBo doesn't have any sources in the DOWNLOAD -setting, as the sources are already part of a full slackware install. +counters are CPU hardware registers that count hardware events +such as instructions executed, cache-misses suffered, or branches +mispredicted. They form a basis for profiling applications to trace +dynamic control flow and identify hotspots. Optional dependencies: audit, numactl, libunwind + +Please note that this build doesn't have any sources in the .info +file, as the sources are already part of the Slackware kernel-source +package. Your running kernel's version should match the kernel-source +version. If it doesn't: + +- If your kernel source is located in /usr/src/linux-$VERSION, you + can export KERNEL=<version> in the script's environment. Example: + + export KERNEL=4.4.240 + +- If your kernel source is somewhere else, you can export + KERNEL=</path/to/source>. Example: + + export KERNEL=/home/myuser/kernels/linux-4.2.240 + +Please note that the package's version number will match the version +of the kernel source, *not* necessarily what's in the perf.info file. |