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2023-12-09 - 10:07
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackeslot0.osadl.org (updated Sat Dec 09, 2023 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183269959940,39cyclictest0-21swapper/123:45:221
183299956327,462cyclictest30377-21apt-config21:45:224
1833199559518,40cyclictest5458-21sshd23:09:266
183289955514,537cyclictest0-21swapper/320:20:223
1833099554493,23cyclictest14903-21sshd22:15:525
1833199552488,26cyclictest21893-21apt-config22:48:466
18330995503,546cyclictest60-21ksoftirqd/520:02:325
183309954929,519cyclictest17069-21lsb_release22:13:295
183319954825,519cyclictest0-21swapper/623:28:406
183309954624,521cyclictest0-21swapper/521:03:195
18330995452,540cyclictest161rcu_preempt22:35:425
183319954451,492cyclictest3417-21lsb_release21:27:406
183309954425,518cyclictest0-21swapper/520:50:215
18329995443,537cyclictest13332-21apt-config21:57:594
183309954220,521cyclictest0-21swapper/520:48:435
183299954235,504cyclictest161rcu_preempt21:27:394
183269954222,519cyclictest4614-21apt-config21:47:581
18326995410,540cyclictest3793-21dpkg23:59:011
18330995400,537cyclictest0-21swapper/522:08:095
18329995386,525cyclictest0-21swapper/423:28:504
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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