| ================ | |
| rtla-timerlat | |
| ================ | |
| ------------------------------------------- | |
| Measures the operating system timer latency | |
| ------------------------------------------- | |
| :Manual section: 1 | |
| SYNOPSIS | |
| ======== | |
| **rtla timerlat** [*MODE*] ... | |
| DESCRIPTION | |
| =========== | |
| .. include:: common_timerlat_description.rst | |
| The *timerlat* tracer outputs information in two ways. It periodically | |
| prints the timer latency at the timer *IRQ* handler and the *Thread* handler. | |
| It also provides information for each noise via the **osnoise:** tracepoints. | |
| The **rtla timerlat top** mode displays a summary of the periodic output | |
| from the *timerlat* tracer. The **rtla hist hist** mode displays a histogram | |
| of each tracer event occurrence. For further details, please refer to the | |
| respective man page. | |
| MODES | |
| ===== | |
| **top** | |
| Prints the summary from *timerlat* tracer. | |
| **hist** | |
| Prints a histogram of timerlat samples. | |
| If no *MODE* is given, the top mode is called, passing the arguments. | |
| OPTIONS | |
| ======= | |
| **-h**, **--help** | |
| Display the help text. | |
| For other options, see the man page for the corresponding mode. | |
| SEE ALSO | |
| ======== | |
| **rtla-timerlat-top**\(1), **rtla-timerlat-hist**\(1) | |
| *timerlat* tracer documentation: <https://www.kernel.org/doc/html/latest/trace/timerlat-tracer.html> | |
| AUTHOR | |
| ====== | |
| Written by Daniel Bristot de Oliveira <bristot@kernel.org> | |
| .. include:: common_appendix.rst |