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2026-06-29 - 12:25
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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 Mon Jun 29, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21850216010,98sleep021916-21timerwakeupswit18:53:520
21850216010,98sleep021916-21timerwakeupswit18:53:520
225429911331,53cyclictest0-21swapper/023:28:200
225469910465,14cyclictest1618-40find23:48:061
2255899993,70cyclictest3621-21apt-get21:08:262
2255899993,70cyclictest3621-21apt-get21:08:262
22558999578,11cyclictest10481-21/usr/sbin/munin23:08:382
270632930,3sleep2371rcuc/220:48:412
270632930,3sleep2371rcuc/220:48:412
22542999365,21cyclictest0-21swapper/022:13:090
22542999365,21cyclictest0-21swapper/022:13:090
163952930,6sleep30-21swapper/323:18:093
22558999249,12cyclictest31154-21idleruntime22:48:312
22542999165,16cyclictest18079-21latency_hist20:23:080
22558999027,18cyclictest0-21swapper/221:00:352
22558999018,15cyclictest381ktimers/220:23:182
22558999018,15cyclictest381ktimers/220:23:182
22546999053,8cyclictest181rcu_preempt20:05:061
22546999048,22cyclictest22534-21cyclictest22:13:571
22558998851,12cyclictest181rcu_preempt22:28:562
22558998851,12cyclictest181rcu_preempt22:28:562
22546998828,13cyclictest31-21ksoftirqd/120:58:191
22546998828,13cyclictest31-21ksoftirqd/120:58:191
22558998749,9cyclictest181rcu_preempt22:38:252
22546998738,26cyclictest0-21swapper/121:41:201
22546998738,26cyclictest0-21swapper/121:41:201
29102860,7sleep30-21swapper/319:33:423
22558998642,8cyclictest181rcu_preempt23:26:092
22546998646,8cyclictest181rcu_preempt21:53:031
22546998646,8cyclictest181rcu_preempt21:53:031
22558998563,7cyclictest181rcu_preempt20:13:342
22558998463,8cyclictest181rcu_preempt23:49:112
22558998450,11cyclictest181rcu_preempt22:02:242
22558998450,11cyclictest181rcu_preempt22:02:242
22546998442,13cyclictest22534-21cyclictest23:52:491
22546998441,21cyclictest0-21swapper/100:07:411
22546998410,38cyclictest31-21ksoftirqd/120:43:421
22542998468,10cyclictest4912-21timerwakeupswit22:03:430
22558998356,13cyclictest181rcu_preempt20:43:242
22558998344,7cyclictest181rcu_preempt23:57:502
22546998362,10cyclictest0-21swapper/100:08:281
22546998360,12cyclictest0-21swapper/120:23:081
22558998259,8cyclictest9249-21ssh22:12:092
22558998259,8cyclictest9249-21ssh22:12:092
22558998247,7cyclictest181rcu_preempt22:16:402
22558998239,10cyclictest22534-21cyclictest23:03:312
22546998263,10cyclictest0-21swapper/120:43:051
22546998263,10cyclictest0-21swapper/120:43:051
22546998252,7cyclictest181rcu_preempt23:29:181
22546998251,8cyclictest181rcu_preempt22:45:271
22542998257,19cyclictest14548-21ssh22:20:190
22542998257,19cyclictest14548-21ssh22:20:190
22558998164,12cyclictest22534-21cyclictest00:18:222
22558998164,12cyclictest22534-21cyclictest00:18:222
22558998145,7cyclictest181rcu_preempt19:32:212
22558998141,16cyclictest17921-21ssh22:26:262
22558998058,8cyclictest181rcu_preempt00:10:272
22558998054,8cyclictest181rcu_preempt23:18:302
22558998050,7cyclictest181rcu_preempt20:38:382
22558998050,7cyclictest181rcu_preempt20:38:382
22558998048,11cyclictest181rcu_preempt21:42:162
22558998048,11cyclictest181rcu_preempt21:42:162
22558998028,21cyclictest0-21swapper/222:38:072
22546998064,9cyclictest0-21swapper/123:58:441
22546998060,11cyclictest0-21swapper/119:43:091
22546998060,11cyclictest0-21swapper/119:43:091
22546998057,12cyclictest0-21swapper/119:28:091
22546998047,12cyclictest181rcu_preempt23:13:381
22546998043,9cyclictest181rcu_preempt21:12:131
22546998043,9cyclictest181rcu_preempt21:12:131
22546998034,20cyclictest0-21swapper/121:19:561
22546998034,20cyclictest0-21swapper/121:19:561
22546998024,32cyclictest31-21ksoftirqd/119:53:321
22546998024,20cyclictest31-21ksoftirqd/119:08:081
22546998020,32cyclictest31-21ksoftirqd/119:08:291
22558997939,11cyclictest27041-21mailstats19:08:402
22558997927,29cyclictest0-21swapper/220:28:212
22558997927,29cyclictest0-21swapper/220:28:212
22558997926,31cyclictest0-21swapper/223:43:282
22558997924,27cyclictest0-21swapper/219:33:422
22558997920,23cyclictest0-21swapper/221:13:352
22546997960,8cyclictest0-21swapper/120:28:301
22546997960,8cyclictest0-21swapper/120:28:301
22546997957,12cyclictest0-21swapper/120:18:081
22546997953,19cyclictest24832-21kworker/u18:1+nfsiod23:03:341
22546997952,8cyclictest181rcu_preempt22:18:231
22546997952,8cyclictest181rcu_preempt22:18:231
22546997940,11cyclictest24849-21kworker/u19:1-rpciod23:36:281
2254299794,38cyclictest15-21ksoftirqd/023:08:140
22558997847,8cyclictest181rcu_preempt21:25:202
22558997841,9cyclictest181rcu_preempt00:13:342
22558997839,8cyclictest181rcu_preempt22:18:242
22558997839,8cyclictest181rcu_preempt22:18:242
22558997838,11cyclictest29515-21latency_hist20:58:092
22558997838,11cyclictest29515-21latency_hist20:58:092
2255899783,65cyclictest1671-21ssh22:53:372
22558997829,22cyclictest0-21swapper/220:38:092
22558997829,22cyclictest0-21swapper/220:38:092
22546997858,11cyclictest0-21swapper/120:38:071
22546997858,11cyclictest0-21swapper/120:38:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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