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Commit 11f775ca authored by Martin Schroschk's avatar Martin Schroschk
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Fix minor issues

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3 merge requests!412Manual attempt to merge preview into main,!402Solved issue-194. Added missing information regarding usage of SSH config for...,!391Adds HPC entry for lo2s
This commit is part of merge request !391. Comments created here will be created in the context of that merge request.
# `lo2s` - Lightweight Node-Level Performance Monitoring
# lo2s - Lightweight Node-Level Performance Monitoring
`lo2s` creates parallel OTF2 traces with a focus on both application and system view.
The traces can contain any of the following information:
* From running threads
* Calling context samples based on instruction overflows
* The calling context samples are annotated with the disassembled assembler instruction string
* The frame pointer-based call-path for each calling context sample
* Per-thread performance counter readings
* Which thread was scheduled on which CPU at what time
* From the system
* Metrics from tracepoints (e.g., the selected C-state or P-state)
* The node-level system tree (CPUs (HW-threads), cores, packages)
* CPU power measurements (x86_energy)
* Microarchitecture specific metrics (x86_adapt, per package or core)
* Arbitrary metrics through plugins (Score-P compatible)
* From running threads
* Calling context samples based on instruction overflows
* The calling context samples are annotated with the disassembled assembler instruction string
* The frame pointer-based call-path for each calling context sample
* Per-thread performance counter readings
* Which thread was scheduled on which CPU at what time
* From the system
* Metrics from tracepoints (e.g., the selected C-state or P-state)
* The node-level system tree (CPUs (HW-threads), cores, packages)
* CPU power measurements (x86_energy)
* Microarchitecture specific metrics (x86_adapt, per package or core)
* Arbitrary metrics through plugins (Score-P compatible)
In general, `lo2s` operates either in **process monitoring** or **system monitoring** mode.
......@@ -119,7 +119,7 @@ marie@compute$ lo2s -a -- sleep 10
```
Like in the `process monitoring mode`, `lo2s` can also sample instructions in the system monitoring mode.
You can enable the instruction sampling by passing the `--instruction-sampling` parameter to `lo2s`.
You can enable the instruction sampling by passing the parameter `--instruction-sampling` to `lo2s`.
```console
marie@compute$ lo2s -a --instruction-sampling -- make -j
......
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