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2026-09-20 - 02:58
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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 Sat Sep 19, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249449912464,19cyclictest17401-21idleruntime-cro11:23:532
24928991202,25cyclictest30774-21/usr/sbin/munin07:25:140
249289911855,56cyclictest1576-21cstates10:04:110
24928991183,30cyclictest16352-21wc09:34:300
24928991152,30cyclictest4003-21ssh11:00:310
24928991142,24cyclictest25909-21rm11:37:370
24928991133,27cyclictest16981-21ssh11:22:440
24928991123,25cyclictest25495-21taskset08:44:330
24928991123,24cyclictest32540-21ssh10:01:010
24928991123,24cyclictest32540-21ssh10:01:010
24928991122,32cyclictest8546-21runrttasks11:09:110
24928991113,25cyclictest9552-21taskset10:16:330
24928991103,23cyclictest2376-21rm09:12:290
24928991102,79cyclictest11470-21/usr/sbin/munin11:14:170
24928991102,48cyclictest9234-21apt-get12:04:040
24928991102,48cyclictest9234-21apt-get12:04:040
24928991102,27cyclictest13936-21taskset08:09:320
24928991092,28cyclictest16654-21ssh12:15:290
24928991092,28cyclictest16654-21ssh12:15:290
24928991092,27cyclictest14211-21ssh12:12:020
24928991092,26cyclictest29083-21sh12:36:410
24928991083,31cyclictest6471-21/usr/sbin/munin07:50:070
24928991083,25cyclictest3259-21taskset09:14:120
24928991083,24cyclictest7812-21ssh11:07:520
24928991083,24cyclictest7812-21ssh11:07:520
24928991083,24cyclictest15350-21ssh10:25:500
24928991082,25cyclictest31919-21ssh10:53:590
24928991082,25cyclictest27359-21ssh10:45:150
24928991082,25cyclictest27359-21ssh10:45:150
24928991072,25cyclictest22252-21ssh11:30:460
24928991072,23cyclictest4732-21ssh11:55:380
24928991072,23cyclictest4732-21ssh11:55:380
24928991063,27cyclictest19147-21ssh10:33:080
24928991063,27cyclictest19147-21ssh10:33:080
24928991063,25cyclictest8377-21ssh09:22:210
24928991063,24cyclictest2276-21ssh11:52:070
24928991062,26cyclictest24089-21ssh09:48:260
24928991062,24cyclictest27164-21taskset07:14:110
24928991062,24cyclictest19592-21ssh11:26:420
24928991062,23cyclictest8356-21ssh12:02:200
24928991062,23cyclictest29285-21ssh11:43:380
24928991062,22cyclictest24563-21fschecks_time12:29:170
24928991062,22cyclictest24563-21fschecks_time12:29:170
24928991062,22cyclictest19599-21ssh12:20:100
24928991062,21cyclictest25495-21seq10:43:250
24928991053,26cyclictest12424-21runrttasks10:21:060
24928991052,23cyclictest18841-21timerandwakeup08:24:290
151021050,6sleep30-21swapper/311:49:573
24928991043,26cyclictest343-21runrttasks10:12:080
24928991043,23cyclictest30521-21taskset09:01:420
24928991042,27cyclictest27186-21ssh09:53:390
24928991042,26cyclictest30599-21ssh10:50:580
24928991042,26cyclictest14771-21seq08:14:020
24928991042,26cyclictest14771-21seq08:14:020
24928991042,24cyclictest21863-21ssh10:37:220
24928991042,24cyclictest14032-21ssh09:30:420
24928991042,24cyclictest14032-21ssh09:30:420
24928991033,6cyclictest0-21swapper/008:54:080
24928991032,26cyclictest29812-21seq07:19:520
24928991032,26cyclictest29812-21seq07:19:520
24928991032,24cyclictest20685-21taskset08:30:030
24928991032,23cyclictest23621-21ssh12:28:070
24928991023,23cyclictest11170-21ssh09:26:060
24928991022,27cyclictest30240-21ssh09:58:460
24928991022,27cyclictest30240-21ssh09:58:460
24928991022,25cyclictest2440-21seq07:35:030
24928991022,25cyclictest2440-21seq07:35:030
24928991022,24cyclictest22411-21taskset08:36:360
249369910111,76cyclictest22427-21apt-get10:39:091
24928991014,23cyclictest26294-21taskset07:11:590
24928991014,23cyclictest26294-21taskset07:11:590
24928991013,24cyclictest27423-21taskset08:53:370
24928991012,24cyclictest4216-21taskset07:41:560
24928991012,23cyclictest17521-21taskset08:20:420
24928991012,22cyclictest20071-21ssh09:40:400
2492899992,24cyclictest31196-21ssh11:45:360
2492899992,22cyclictest5724-21taskset07:45:390
2492899992,22cyclictest5724-21taskset07:45:390
2492899973,7cyclictest0-21swapper/009:04:050
2492899962,20cyclictest11501-21sh08:04:130
2492899953,23cyclictest863-21runrttasks07:30:290
2492899952,25cyclictest24086-21taskset08:42:080
24944999415,34cyclictest381ktimers/209:24:232
2492899933,82cyclictest24930-21latency_hist07:08:570
246042936,16sleep20-21swapper/207:06:332
24944999152,13cyclictest181rcu_preempt09:41:482
2492899912,29cyclictest8709-21/usr/sbin/munin07:54:270
2492899912,25cyclictest9730-21apt-get07:59:040
2492899912,25cyclictest9730-21apt-get07:59:040
24944998770,11cyclictest30187-21systemd-run07:23:552
24944998770,11cyclictest30187-21systemd-run07:23:552
24944998747,17cyclictest181rcu_preempt10:37:122
2493699873,63cyclictest5986-21apt-get07:49:071
2375428714,30sleep10-21swapper/107:04:241
24936998568,11cyclictest526-21rs:main1
2494499844,65cyclictest30952-21ssh09:59:162
2494499844,65cyclictest30952-21ssh09:59:162
24936998467,11cyclictest5999-21latency_hist09:18:561
24944998348,13cyclictest181rcu_preempt11:16:192
24936998366,11cyclictest1-21systemd11:18:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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