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2026-04-05 - 23:10
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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 05, 2026 12:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146272236158,61sleep20-21swapper/207:08:142
144842213157,43sleep30-21swapper/307:06:233
146082205152,41sleep00-21swapper/007:08:000
144722198161,24sleep10-21swapper/107:06:131
132042630,1sleep3341rcuc/308:10:193
290282580,0sleep10-21swapper/108:45:141
87162140,0sleep10-21swapper/110:34:271
1484699133,5cyclictest5385-21date09:05:000
14863991211,1cyclictest28-21ksoftirqd/208:15:012
14870991111,0cyclictest0-21swapper/311:56:473
1487099109,1cyclictest561-21nscd09:22:413
1484699100,1cyclictest240-21systemd-journal12:20:010
8724290,0sleep20-21swapper/210:34:282
27181290,0sleep227313-21/usr/sbin/munin10:15:142
27181290,0sleep227313-21/usr/sbin/munin10:15:142
16317290,0sleep20-21swapper/210:44:112
148709998,1cyclictest35-21ksoftirqd/309:05:003
148709992,4cyclictest35-21ksoftirqd/310:47:323
148469997,1cyclictest9-21ksoftirqd/011:35:000
148469990,5cyclictest0-21swapper/008:55:120
14195290,0sleep00-21swapper/009:16:490
148709987,1cyclictest7697-21diskmemload11:29:473
148709981,5cyclictest2246-21python08:55:193
148709980,1cyclictest0-21swapper/308:35:113
148639988,0cyclictest0-21swapper/211:00:152
148639986,1cyclictest61650irq/122-eno111:05:142
148639986,1cyclictest61650irq/122-eno109:37:342
148639986,1cyclictest28-21ksoftirqd/208:40:002
148639983,2cyclictest240-21systemd-journal08:09:592
148559984,4cyclictest21-21ksoftirqd/109:48:461
148559980,7cyclictest0-21swapper/108:55:131
148469987,1cyclictest9-21ksoftirqd/008:25:010
148469987,1cyclictest9-21ksoftirqd/007:15:010
148469982,5cyclictest11140-21latency_hist11:20:000
148469981,5cyclictest22464-21apt-get10:10:120
148469980,7cyclictest9470-21grep10:35:100
148469980,7cyclictest24485-21grep11:35:220
148469980,7cyclictest19116-21sh10:46:260
148469980,7cyclictest18152-21perl12:10:140
148469980,7cyclictest13064-21sh10:40:060
148469980,1cyclictest0-21swapper/010:05:010
7719270,0sleep20-21swapper/208:00:122
26841270,0sleep20-21swapper/209:33:092
148709975,1cyclictest35-21ksoftirqd/309:45:273
148709975,1cyclictest18147-21ssh12:10:153
148709975,1cyclictest1107-21ssh09:40:263
148709973,3cyclictest5483-21sh11:55:003
148709973,1cyclictest240-21systemd-journal07:20:013
148709971,4cyclictest15050-21/usr/sbin/munin07:10:153
148709971,2cyclictest8982-21runrttasks09:51:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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