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2026-08-03 - 20:40
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Mon Aug 03, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204170,23phc2sys0-21swapper/307:06:543
39722203170,21sleep00-21swapper/007:07:320
38952203167,24sleep10-21swapper/107:06:341
40782201168,22sleep20-21swapper/207:08:552
275052750,3sleep227509-21irqrtprio10:05:182
275052750,3sleep227509-21irqrtprio10:05:182
4463996431,8cyclictest25-21ksoftirqd/109:20:221
4463996428,10cyclictest25-21ksoftirqd/112:20:121
4463996330,6cyclictest25-21ksoftirqd/110:50:191
4463996327,5cyclictest25-21ksoftirqd/110:10:131
4463996128,8cyclictest25-21ksoftirqd/107:40:231
4463996128,8cyclictest25-21ksoftirqd/107:40:231
4463996126,7cyclictest25-21ksoftirqd/109:00:201
4463996123,8cyclictest25-21ksoftirqd/107:30:251
303042610,2sleep230302-21tr11:15:192
4464996026,5cyclictest33-21ksoftirqd/208:55:182
4463996031,4cyclictest25-21ksoftirqd/109:10:221
4463996029,8cyclictest25-21ksoftirqd/111:12:591
4463996029,7cyclictest25-21ksoftirqd/112:10:151
4463996027,9cyclictest25-21ksoftirqd/109:40:161
4463996019,4cyclictest25-21ksoftirqd/108:35:221
4463995928,8cyclictest25-21ksoftirqd/108:05:231
4463995926,4cyclictest25-21ksoftirqd/110:35:161
4463995925,4cyclictest25-21ksoftirqd/110:20:131
4463995922,8cyclictest25-21ksoftirqd/107:20:181
4463995922,5cyclictest25-21ksoftirqd/111:40:251
4463995828,9cyclictest25-21ksoftirqd/112:05:141
4463995828,8cyclictest25-21ksoftirqd/112:15:141
4463995826,7cyclictest25-21ksoftirqd/110:25:231
4463995824,7cyclictest25-21ksoftirqd/110:55:261
4463995822,7cyclictest25-21ksoftirqd/111:30:091
4463995822,7cyclictest25-21ksoftirqd/111:30:091
4463995725,7cyclictest25-21ksoftirqd/112:00:201
4463995725,7cyclictest25-21ksoftirqd/109:50:241
4463995725,6cyclictest25-21ksoftirqd/107:50:271
4463995722,7cyclictest25-21ksoftirqd/108:20:261
4463995721,7cyclictest25-21ksoftirqd/109:05:181
4463995720,9cyclictest25-21ksoftirqd/109:45:251
4463995718,4cyclictest25-21ksoftirqd/108:25:211
4463995618,4cyclictest25-21ksoftirqd/111:50:241
138491560,1ptp4l401ktimersoftd/311:07:133
446399556,8cyclictest25-21ksoftirqd/108:30:221
446399555,8cyclictest25-21ksoftirqd/112:30:141
446399555,7cyclictest25-21ksoftirqd/108:10:191
4463995525,8cyclictest25-21ksoftirqd/112:35:131
4463995524,8cyclictest25-21ksoftirqd/109:25:111
4463995523,7cyclictest25-21ksoftirqd/111:35:141
4463995521,8cyclictest25-21ksoftirqd/111:25:161
4463995517,7cyclictest25-21ksoftirqd/111:47:261
446399545,8cyclictest25-21ksoftirqd/110:45:161
446399545,7cyclictest25-21ksoftirqd/111:20:161
446399545,7cyclictest25-21ksoftirqd/107:35:171
446399544,7cyclictest25-21ksoftirqd/109:15:271
285082540,5sleep30-21swapper/312:15:253
446399536,7cyclictest6646-21apt08:20:011
446399536,7cyclictest25-21ksoftirqd/110:15:221
446399535,7cyclictest25-21ksoftirqd/108:55:181
446399535,7cyclictest25-21ksoftirqd/108:50:211
446399535,7cyclictest25-21ksoftirqd/107:55:301
446399534,7cyclictest25-21ksoftirqd/111:05:171
446399534,7cyclictest25-21ksoftirqd/108:40:171
446399534,7cyclictest25-21ksoftirqd/108:40:171
446399534,7cyclictest25-21ksoftirqd/107:10:151
446399534,10cyclictest25-21ksoftirqd/111:15:191
4463995323,9cyclictest25-21ksoftirqd/111:55:131
4463995319,4cyclictest25-21ksoftirqd/109:35:121
4463995317,4cyclictest25-21ksoftirqd/110:09:381
4463995317,4cyclictest25-21ksoftirqd/110:09:381
4463995317,4cyclictest25-21ksoftirqd/109:55:501
446399525,7cyclictest25-21ksoftirqd/110:00:261
446399524,8cyclictest25-21ksoftirqd/110:40:171
446399524,7cyclictest25-21ksoftirqd/107:25:251
446399524,7cyclictest25-21ksoftirqd/107:15:141
446399523,8cyclictest25-21ksoftirqd/107:45:211
4463995221,8cyclictest25-21ksoftirqd/112:25:171
4463995218,4cyclictest25-21ksoftirqd/108:49:531
446399515,9cyclictest25-21ksoftirqd/109:30:171
446399515,4cyclictest25-21ksoftirqd/108:00:181
446399512,8cyclictest25-21ksoftirqd/110:30:171
4463995120,7cyclictest25-21ksoftirqd/111:00:231
174762490,2sleep30-21swapper/308:40:183
174762490,2sleep30-21swapper/308:40:183
1385914934,8phc2sys0-21swapper/307:10:013
446599474,7cyclictest121rcu_preempt10:20:193
4464994639,4cyclictest33-21ksoftirqd/207:30:002
169352460,3sleep20-21swapper/208:40:142
169352460,3sleep20-21swapper/208:40:142
54042450,1sleep20-21swapper/209:20:222
446599453,3cyclictest121rcu_preempt10:10:013
446599453,3cyclictest121rcu_preempt10:10:013
4465994531,12cyclictest41-21ksoftirqd/309:05:003
4462994533,4cyclictest9-21ksoftirqd/012:00:000
4462994418,7cyclictest9-21ksoftirqd/008:45:010
4462994418,7cyclictest9-21ksoftirqd/008:45:010
138491440,0ptp4l401ktimersoftd/310:40:043
4462994338,3cyclictest9-21ksoftirqd/012:40:000
138491430,0ptp4l401ktimersoftd/311:45:173
138491430,0ptp4l401ktimersoftd/309:55:223
138491430,0ptp4l401ktimersoftd/308:22:233
446499421,3cyclictest33-21ksoftirqd/208:00:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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