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2024-03-03 - 23:44
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackbslot7 (updated Sun Mar 03, 2024 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271521069,64sleep02726-21latency_hist07:08:450
248621056,14sleep30-21swapper/307:06:403
2809998743,16cyclictest0-21swapper/312:01:413
280499845,62cyclictest18477-21apt-get11:18:522
280499845,62cyclictest18477-21apt-get11:18:522
2804998359,16cyclictest7863-21runrttasks08:59:262
2804998359,16cyclictest7863-21runrttasks08:59:262
2796998153,9cyclictest25-21ksoftirqd/109:09:201
2804998058,13cyclictest21872-21fschecks_count09:29:152
2796998046,9cyclictest25-21ksoftirqd/107:59:241
2809997948,8cyclictest141rcu_preempt10:04:063
2796997910,30cyclictest0-21swapper/110:29:121
2804997836,31cyclictest0-21swapper/209:24:152
2787997833,14cyclictest141rcu_preempt07:29:040
189127811,42sleep11920-21/usr/sbin/munin07:04:301
2809997710,45cyclictest22257-21cstates11:24:083
280499773,62cyclictest19888-21apt-get07:59:102
2796997759,11cyclictest347-21in:imklog11:24:081
2787997741,11cyclictest141rcu_preempt07:14:240
2787997733,30cyclictest141rcu_preempt09:39:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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