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2025-04-02 - 04:24
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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 rack1slot8.osadl.org (updated Wed Apr 02, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1144299785727,51cyclictest0-21swapper/019:12:210
110262641618,16sleep00-21swapper/019:06:130
1144299511427,46cyclictest1139-21nscd21:30:250
1144399423359,48cyclictest31872-21processes21:30:241
111742363342,15sleep10-21swapper/119:07:441
114439912015,67cyclictest0-21swapper/121:01:591
11443999423,53cyclictest0-21swapper/121:56:591
11443999212,64cyclictest0-21swapper/123:36:591
11442998970,15cyclictest0-21swapper/021:25:000
1144399864,48cyclictest0-21swapper/119:12:211
11442998662,18cyclictest23894-21ssh22:15:590
216899800,12rtkit-daemon0-21swapper/022:58:521
216899770,4rtkit-daemon2167-21rtkit-daemon00:19:531
216899760,4rtkit-daemon2167-21rtkit-daemon21:15:590
216899760,12rtkit-daemon0-21swapper/020:27:090
216899750,3rtkit-daemon2167-21rtkit-daemon21:47:301
11442997554,6cyclictest20076-21diskmemload00:28:580
11442997554,6cyclictest20076-21diskmemload00:28:580
216899740,33rtkit-daemon1148-21nscd21:51:101
216899740,32rtkit-daemon2167-21rtkit-daemon20:30:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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