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2026-04-23 - 13:34
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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 rackbslot7.osadl.org (updated Thu Apr 23, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18037211210,58sleep218077-21fschecks_count18:58:022
193369910236,29cyclictest30847-21seq19:35:530
2659321000,6sleep20-21swapper/219:22:592
2008021000,8sleep30-21swapper/322:38:173
270782990,3sleep30-21swapper/321:03:003
19336999938,25cyclictest13310-21seq20:19:480
19336999938,25cyclictest13310-21seq20:19:480
19336999643,21cyclictest10637-21seq21:28:510
19336999643,21cyclictest10637-21seq21:28:510
19336999629,27cyclictest19981-21runrttasks20:42:320
19336999539,23cyclictest24796-21seq20:57:020
19336999539,23cyclictest24796-21seq20:57:020
19336999538,25cyclictest14697-21seq23:24:590
19336999538,25cyclictest14697-21seq23:24:590
19336999442,22cyclictest20167-21seq23:33:300
19336999442,22cyclictest20167-21seq23:33:300
19336999439,25cyclictest26087-21seq19:22:000
19336999439,25cyclictest26087-21seq19:22:000
19336999438,17cyclictest12644-21seq23:22:350
19336999338,24cyclictest32381-21seq19:39:580
19336999337,22cyclictest14971-21seq20:25:310
19336999240,21cyclictest21245-21seq00:29:570
19336999239,16cyclictest17147-21seq21:40:140
19336999239,16cyclictest17147-21seq21:40:140
19336999238,21cyclictest8327-21seq20:06:110
19336999232,27cyclictest0-21swapper/000:25:350
19336999140,16cyclictest12942-21seq00:17:240
19336999139,19cyclictest23162-21seq20:52:070
19336999138,20cyclictest23222-21seq21:50:270
19336999131,23cyclictest15323-21runrttasks22:31:450
19336999041,20cyclictest29875-21seq22:02:150
19336999041,15cyclictest6132-21seq00:05:040
19336999039,16cyclictest27545-21seq19:25:040
19336999038,22cyclictest3255-21seq19:51:280
19336999038,15cyclictest352-21runrttasks22:58:450
19336999033,23cyclictest3768-21runrttasks00:01:480
19336999033,23cyclictest3768-21runrttasks00:01:480
19336999030,23cyclictest27125-21runrttasks23:46:230
19336998938,16cyclictest23230-21seq23:38:450
19336998929,26cyclictest0-21swapper/021:21:460
19336998840,12cyclictest18124-21ssh22:36:110
19336998840,12cyclictest18124-21ssh22:36:110
19336998833,23cyclictest0-21swapper/023:14:530
19336998833,23cyclictest0-21swapper/023:14:530
179412889,55sleep017995-21expr18:57:560
263892870,25sleep239-21ksoftirqd/222:49:232
263892870,25sleep239-21ksoftirqd/222:49:232
19336998740,40cyclictest13327-21cat21:33:140
19336998738,39cyclictest9271-21ssh00:10:300
19336998735,19cyclictest1409-21seq19:43:220
19336998727,25cyclictest16472-21runrttasks20:29:070
19340998635,13cyclictest181rcu_preempt22:12:411
19336998641,14cyclictest24282-21seq19:14:230
19336998641,14cyclictest24282-21seq19:14:230
19336998630,20cyclictest0-21swapper/021:15:090
19336998540,15cyclictest29102-21seq19:29:250
19336998537,38cyclictest29857-21ssh23:50:420
19336998537,38cyclictest29857-21ssh23:50:420
19336998453,19cyclictest19526-21apt-get19:02:510
19336998431,21cyclictest0-21swapper/020:44:420
19336998431,19cyclictest0-21swapper/021:07:470
19336998431,19cyclictest0-21swapper/021:07:470
1803428411,47sleep118036-21/usr/sbin/munin18:58:011
19336998340,20cyclictest20119-21seq21:45:080
19340998259,13cyclictest0-21swapper/120:57:391
19340998259,13cyclictest0-21swapper/120:57:391
19336998241,31cyclictest7138-21apt-get22:17:500
19336998241,31cyclictest7138-21apt-get22:17:500
19336998239,34cyclictest21947-21ssh22:42:510
19336998230,18cyclictest18297-21runrttasks20:36:360
105532820,17sleep110554-21sh00:12:561
1935999817,51cyclictest16617-21taskset00:22:593
19352998164,10cyclictest15877-21latency_hist22:32:422
19352998154,18cyclictest15576-21fschecks_count21:37:592
19352998154,18cyclictest15576-21fschecks_count21:37:592
19352998136,29cyclictest277-21dbus-daemon21:22:392
19340998161,10cyclictest0-21swapper/119:53:381
19336998153,19cyclictest6331-21apt-get21:22:490
19336998145,27cyclictest19298-21/usr/sbin/munin22:38:000
119992810,9sleep111997-21apt21:32:371
119992810,9sleep111997-21apt21:32:371
19352998054,17cyclictest22322-21/usr/sbin/munin22:43:012
19340998057,14cyclictest0-21swapper/122:07:391
19340998057,13cyclictest0-21swapper/119:32:401
19340998057,12cyclictest0-21swapper/120:47:411
19352997949,22cyclictest20365-21switchtime00:28:122
19336997943,26cyclictest6666-21cat22:17:380
19336997943,26cyclictest6666-21cat22:17:380
19352997854,18cyclictest18453-21latency_hist20:37:402
19352997854,18cyclictest16961-21timerwakeupswit22:33:162
19352997854,18cyclictest16961-21timerwakeupswit22:33:162
19352997836,12cyclictest31702-21ssh22:58:132
19352997834,17cyclictest2327-21ssh21:15:422
19340997859,9cyclictest0-21swapper/119:52:421
19340997858,11cyclictest0-21swapper/120:32:591
19340997856,12cyclictest0-21swapper/120:02:401
19340997831,36cyclictest27977-21latency_hist19:27:411
19336997851,21cyclictest5506-21apt-get19:57:530
19336997845,23cyclictest10572-21/usr/sbin/munin22:23:060
19336997842,29cyclictest27497-21ssh22:52:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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