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2026-08-08 - 07:02
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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 100 highest latencies:
System rack5slot2.osadl.org (updated Sat Aug 08, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146802196180,11sleep10-21swapper/119:09:081
145342184167,12sleep00-21swapper/019:07:140
145322184167,12sleep30-21swapper/319:07:123
144452181163,13sleep20-21swapper/219:06:082
53602450,0sleep10-21swapper/122:28:281
244892450,0sleep20-21swapper/222:21:212
16455290,0sleep10-21swapper/123:22:571
149669970,3cyclictest29562-21apt-get23:30:000
149969960,6cyclictest0-21swapper/319:55:113
149969960,5cyclictest0-21swapper/320:55:003
149889964,2cyclictest0-21swapper/223:36:242
149669960,3cyclictest15747-21perf20:15:000
23859250,4sleep223885-21ssh23:59:542
149969955,0cyclictest7514-21kworker/3:023:16:053
149969955,0cyclictest7514-21kworker/3:020:39:203
149969955,0cyclictest0-21swapper/320:50:133
149969950,5cyclictest0-21swapper/323:00:453
149969950,5cyclictest0-21swapper/321:20:133
149969950,0cyclictest0-21swapper/300:01:163
149889955,0cyclictest0-21swapper/200:02:262
149889951,2cyclictest0-21swapper/219:10:112
149889950,5cyclictest10741-21diskmemload23:40:122
149889950,5cyclictest0-21swapper/223:28:502
149889950,5cyclictest0-21swapper/223:10:562
149889950,5cyclictest0-21swapper/200:39:062
149889950,5cyclictest0-21swapper/200:24:332
149889950,4cyclictest25377-21apt-get22:55:102
149889950,0cyclictest0-21swapper/200:12:452
149789950,5cyclictest0-21swapper/122:50:171
149789950,5cyclictest0-21swapper/100:24:151
149669955,0cyclictest0-21swapper/021:14:390
149669952,3cyclictest802-21snmpd23:34:230
149669952,3cyclictest7510-21kworker/0:019:53:370
149669952,3cyclictest7510-21kworker/0:019:28:330
149669950,5cyclictest0-21swapper/021:55:590
149669950,5cyclictest0-21swapper/021:30:050
149669950,5cyclictest0-21swapper/000:35:440
149669950,5cyclictest0-21swapper/000:26:420
149969944,0cyclictest7514-21kworker/3:022:20:073
149969944,0cyclictest7514-21kworker/3:021:57:433
149969941,3cyclictest15282-21runrttasks23:55:123
149969941,2cyclictest0-21swapper/319:45:133
149969941,1cyclictest0-21swapper/320:05:113
149969940,4cyclictest28355-21apt-get20:40:113
149969940,4cyclictest16187-21/usr/sbin/munin21:45:133
149969940,4cyclictest0-21swapper/323:41:373
149969940,4cyclictest0-21swapper/323:35:453
149969940,4cyclictest0-21swapper/323:32:003
149969940,4cyclictest0-21swapper/323:26:593
149969940,4cyclictest0-21swapper/323:10:103
149969940,4cyclictest0-21swapper/322:57:593
149969940,4cyclictest0-21swapper/322:35:103
149969940,4cyclictest0-21swapper/322:11:213
149969940,4cyclictest0-21swapper/322:05:123
149969940,4cyclictest0-21swapper/322:00:113
149969940,4cyclictest0-21swapper/321:34:353
149969940,4cyclictest0-21swapper/321:25:113
149969940,4cyclictest0-21swapper/320:30:113
149969940,4cyclictest0-21swapper/319:40:083
149969940,4cyclictest0-21swapper/319:20:013
149969940,4cyclictest0-21swapper/319:10:013
149969940,4cyclictest0-21swapper/300:21:303
149969940,4cyclictest0-21swapper/300:15:113
149969940,4cyclictest0-21swapper/300:09:133
149969940,3cyclictest484-21sh21:36:473
149969940,3cyclictest4598-21ssh23:50:013
149969940,3cyclictest31378-21ssh23:46:323
149969940,3cyclictest28706-21chrt00:35:133
149969940,3cyclictest28554-21date19:35:013
149969940,3cyclictest28005-21ssh22:40:053
149969940,3cyclictest26917-21sh21:50:143
149969940,3cyclictest23215-21grep21:15:213
149969940,3cyclictest19726-21ntp_states20:20:183
149969940,3cyclictest18551-21sh00:30:003
149969940,3cyclictest18530-21wget19:15:123
149969940,3cyclictest16557-21ssh23:23:013
149969940,3cyclictest134732sleep320:10:063
149969940,3cyclictest12926-21munin-node23:05:113
149969940,3cyclictest12649-21rm22:48:283
149969940,3cyclictest11784-21ssh22:31:133
149969940,3cyclictest11092-21sh00:25:213
149969940,1cyclictest9817-21ntp_states20:00:163
149969940,1cyclictest6179-21/usr/sbin/munin21:40:143
149969940,1cyclictest24908-21ntp_states19:25:183
149969940,1cyclictest11489-21diskstats22:15:143
149889944,0cyclictest0-21swapper/223:48:012
149889944,0cyclictest0-21swapper/223:03:222
149889944,0cyclictest0-21swapper/222:07:562
149889942,2cyclictest30453-21kworker/2:022:34:322
149889942,1cyclictest4038-21ssh00:05:192
149889942,1cyclictest22170-21ssh21:31:152
149889942,1cyclictest10133-21ssh23:20:052
149889941,3cyclictest802-21snmpd21:36:442
149889941,2cyclictest0-21swapper/221:20:122
149889940,4cyclictest15461-21ssh23:05:372
149889940,4cyclictest0-21swapper/223:15:052
149889940,4cyclictest0-21swapper/222:15:132
149889940,4cyclictest0-21swapper/222:14:012
149889940,4cyclictest0-21swapper/221:55:122
149889940,4cyclictest0-21swapper/221:45:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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