162306a36Sopenharmony_ci================ 262306a36Sopenharmony_cirtla-timerlat 362306a36Sopenharmony_ci================ 462306a36Sopenharmony_ci------------------------------------------- 562306a36Sopenharmony_ciMeasures the operating system timer latency 662306a36Sopenharmony_ci------------------------------------------- 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci:Manual section: 1 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciSYNOPSIS 1162306a36Sopenharmony_ci======== 1262306a36Sopenharmony_ci**rtla timerlat** [*MODE*] ... 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ciDESCRIPTION 1562306a36Sopenharmony_ci=========== 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci.. include:: common_timerlat_description.rst 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ciThe *timerlat* tracer outputs information in two ways. It periodically 2062306a36Sopenharmony_ciprints the timer latency at the timer *IRQ* handler and the *Thread* handler. 2162306a36Sopenharmony_ciIt also provides information for each noise via the **osnoise:** tracepoints. 2262306a36Sopenharmony_ciThe **rtla timerlat top** mode displays a summary of the periodic output 2362306a36Sopenharmony_cifrom the *timerlat* tracer. The **rtla hist hist** mode displays a histogram 2462306a36Sopenharmony_ciof each tracer event occurrence. For further details, please refer to the 2562306a36Sopenharmony_cirespective man page. 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciMODES 2862306a36Sopenharmony_ci===== 2962306a36Sopenharmony_ci**top** 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci Prints the summary from *timerlat* tracer. 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci**hist** 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci Prints a histogram of timerlat samples. 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciIf no *MODE* is given, the top mode is called, passing the arguments. 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ciOPTIONS 4062306a36Sopenharmony_ci======= 4162306a36Sopenharmony_ci**-h**, **--help** 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci Display the help text. 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ciFor other options, see the man page for the corresponding mode. 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ciSEE ALSO 4862306a36Sopenharmony_ci======== 4962306a36Sopenharmony_ci**rtla-timerlat-top**\(1), **rtla-timerlat-hist**\(1) 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ci*timerlat* tracer documentation: <https://www.kernel.org/doc/html/latest/trace/timerlat-tracer.html> 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ciAUTHOR 5462306a36Sopenharmony_ci====== 5562306a36Sopenharmony_ciWritten by Daniel Bristot de Oliveira <bristot@kernel.org> 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ci.. include:: common_appendix.rst 58