1================
2rtla-timerlat
3================
4-------------------------------------------
5Measures the operating system timer latency
6-------------------------------------------
7
8:Manual section: 1
9
10SYNOPSIS
11========
12**rtla timerlat** [*MODE*] ...
13
14DESCRIPTION
15===========
16
17.. include:: common_timerlat_description.rst
18
19The *timerlat* tracer outputs information in two ways. It periodically
20prints the timer latency at the timer *IRQ* handler and the *Thread* handler.
21It also provides information for each noise via the **osnoise:** tracepoints.
22The **rtla timerlat top** mode displays a summary of the periodic output
23from the *timerlat* tracer. The **rtla hist hist** mode displays a histogram
24of each tracer event occurrence. For further details, please refer to the
25respective man page.
26
27MODES
28=====
29**top**
30
31        Prints the summary from *timerlat* tracer.
32
33**hist**
34
35        Prints a histogram of timerlat samples.
36
37If no *MODE* is given, the top mode is called, passing the arguments.
38
39OPTIONS
40=======
41**-h**, **--help**
42
43        Display the help text.
44
45For other options, see the man page for the corresponding mode.
46
47SEE ALSO
48========
49**rtla-timerlat-top**\(1), **rtla-timerlat-hist**\(1)
50
51*timerlat* tracer documentation: <https://www.kernel.org/doc/html/latest/trace/timerlat-tracer.html>
52
53AUTHOR
54======
55Written by Daniel Bristot de Oliveira <bristot@kernel.org>
56
57.. include:: common_appendix.rst
58