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2026-04-19 - 01:44
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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
Characteristics of the 50 highest latencies:
System rack1slot1.osadl.org (updated Sun Apr 19, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37002214152,49sleep00-21swapper/019:09:380
35712202163,26sleep30-21swapper/319:07:563
35482200161,26sleep20-21swapper/219:07:382
33912198159,25sleep10-21swapper/119:05:351
275712740,0sleep20-21swapper/223:14:012
103712650,1sleep210374-21timerandwakeup21:25:192
382099120,0cyclictest0-21swapper/122:50:091
3831991110,1cyclictest28-21ksoftirqd/200:40:002
3831991110,1cyclictest28-21ksoftirqd/200:20:012
383199109,1cyclictest817-21aten_r1power_cu20:10:112
38379991,6cyclictest28885-21diskmemload23:25:173
38379990,7cyclictest14743-21sh22:15:123
38319998,1cyclictest28-21ksoftirqd/223:25:002
38319997,1cyclictest28-21ksoftirqd/223:04:592
38319997,1cyclictest28-21ksoftirqd/221:56:472
38319997,1cyclictest28-21ksoftirqd/221:56:462
38319990,8cyclictest30130-21apt-get22:35:122
38319990,4cyclictest20668-21/usr/sbin/munin23:05:132
38159997,1cyclictest9-21ksoftirqd/020:35:000
38159993,6cyclictest22376-21latency_hist23:50:010
38379987,1cyclictest35-21ksoftirqd/320:40:003
38379986,1cyclictest17998-21snmpd21:46:163
38379986,1cyclictest17998-21snmpd21:30:283
38379986,1cyclictest17998-21snmpd20:51:533
38379986,1cyclictest17998-21snmpd20:01:473
38379986,1cyclictest17998-21snmpd19:57:313
38379986,1cyclictest17998-21snmpd19:57:303
38379982,3cyclictest0-21swapper/323:05:133
38379980,7cyclictest0-21swapper/322:25:113
38379980,4cyclictest0-21swapper/322:35:113
38379980,3cyclictest20630-21apt-get21:40:113
38319988,0cyclictest0-21swapper/221:38:272
38319986,1cyclictest61650irq/122-eno123:49:352
38319986,1cyclictest61650irq/122-eno123:31:382
38319986,1cyclictest61650irq/122-eno123:26:212
38319986,1cyclictest61650irq/122-eno123:15:122
38319986,1cyclictest61650irq/122-eno122:30:102
38319986,1cyclictest61650irq/122-eno122:05:132
38319986,1cyclictest61650irq/122-eno119:50:202
38319986,1cyclictest61650irq/122-eno100:10:122
38319986,1cyclictest28-21ksoftirqd/200:05:002
38319984,2cyclictest548-21systemd-logind21:40:192
38319984,2cyclictest28-21ksoftirqd/200:33:422
38319982,3cyclictest29144-21apt-get21:10:122
38319981,4cyclictest12992-21aten_r1power_vo22:55:142
38319980,5cyclictest22346-21apt-get22:25:102
38319980,2cyclictest0-21swapper/219:40:122
38159986,1cyclictest28885-21diskmemload00:05:140
38159986,1cyclictest12654-21perf21:30:000
38159985,2cyclictest27936-21cron23:15:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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