| ================ |
| 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 |
