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2026-03-11 - 07:56
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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 rackcslot4.osadl.org (updated Wed Mar 11, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35432422267194,59sleep00-21swapper/019:05:590
35432552240198,28sleep10-21swapper/119:06:091
37382472620,1sleep10-21swapper/100:33:471
37355072540,9sleep013-21ksoftirqd/000:30:250
37108122430,1sleep10-21swapper/123:54:541
35459442430,3sleep13543730-21cyclictest19:15:021
179699430,3rtkit-daemon0-21swapper/123:32:041
354373499427,2cyclictest141rcu_preempt00:30:020
354373899418,3cyclictest141rcu_preempt00:00:001
354373499418,2cyclictest141rcu_preempt00:05:000
3543734994111,6cyclictest13-21ksoftirqd/023:25:000
36806152400,4sleep013-21ksoftirqd/023:10:370
3543738994015,4cyclictest26-21ksoftirqd/100:20:001
3543738994012,5cyclictest26-21ksoftirqd/100:10:001
354373499406,2cyclictest141rcu_preempt00:00:020
3543738993912,5cyclictest26-21ksoftirqd/122:10:011
3543734993911,5cyclictest13-21ksoftirqd/021:20:000
3543738993812,7cyclictest26-21ksoftirqd/123:40:011
3543738993812,5cyclictest26-21ksoftirqd/123:00:001
3543738993811,5cyclictest26-21ksoftirqd/123:05:011
3543734993811,5cyclictest13-21ksoftirqd/023:20:010
354373899378,4cyclictest26-21ksoftirqd/123:30:001
3543738993712,4cyclictest26-21ksoftirqd/100:10:011
3543734993710,5cyclictest13-21ksoftirqd/020:15:010
3543738993612,22cyclictest18150irq/39-mmc022:05:011
3543738993611,4cyclictest26-21ksoftirqd/122:55:011
3543738993611,4cyclictest26-21ksoftirqd/122:55:001
354373499369,5cyclictest13-21ksoftirqd/020:20:010
354373499365,2cyclictest141rcu_preempt00:20:000
354373499364,2cyclictest141rcu_preempt00:40:000
3543734993611,5cyclictest13-21ksoftirqd/020:00:230
354373899357,2cyclictest141rcu_preempt19:25:011
354373499356,2cyclictest141rcu_preempt21:45:010
354373499352,7cyclictest13-21ksoftirqd/000:10:120
3543734993512,5cyclictest13-21ksoftirqd/021:34:590
3543734993511,5cyclictest13-21ksoftirqd/021:15:010
3543734993510,5cyclictest13-21ksoftirqd/019:15:000
354373899349,3cyclictest141rcu_preempt21:35:141
354373899344,2cyclictest141rcu_preempt20:35:251
3543738993415,3cyclictest2085777-1kworker/u9:221:10:121
354373499344,3cyclictest141rcu_preempt22:25:010
3543734993414,5cyclictest13-21ksoftirqd/019:55:020
3543734993411,5cyclictest13-21ksoftirqd/022:00:220
354373899336,3cyclictest141rcu_preempt19:10:231
3543738993313,4cyclictest26-21ksoftirqd/119:35:211
3543738993311,20cyclictest18150irq/39-mmc021:45:001
354373499338,3cyclictest141rcu_preempt22:45:210
354373499336,3cyclictest141rcu_preempt23:55:000
354373499335,2cyclictest141rcu_preempt22:30:010
354373499334,2cyclictest141rcu_preempt23:05:250
354373499334,2cyclictest141rcu_preempt22:05:100
354373499334,2cyclictest141rcu_preempt20:50:010
3543734993315,5cyclictest13-21ksoftirqd/022:00:010
3543734993315,4cyclictest13-21ksoftirqd/021:50:010
3543734993314,5cyclictest13-21ksoftirqd/019:55:010
3543734993311,5cyclictest13-21ksoftirqd/019:20:230
3543734993311,4cyclictest13-21ksoftirqd/021:21:090
3543734993310,4cyclictest13-21ksoftirqd/019:40:230
354373899328,3cyclictest141rcu_preempt00:30:011
354373899327,3cyclictest141rcu_preempt21:50:121
354373899327,3cyclictest141rcu_preempt20:40:251
354373899327,2cyclictest141rcu_preempt21:55:131
354373899324,3cyclictest141rcu_preempt21:10:001
354373899324,19cyclictest141rcu_preempt23:45:161
3543738993229,2cyclictest66950irq/132-enp2s021:27:371
3543738993223,7cyclictest2650ksoftirqd/100:01:381
3543738993217,3cyclictest26-21ksoftirqd/120:45:161
3543738993211,2cyclictest141rcu_preempt22:20:221
3543738993210,4cyclictest26-21ksoftirqd/122:34:361
354373499327,4cyclictest13-21ksoftirqd/023:37:340
354373499327,3cyclictest141rcu_preempt22:19:020
354373499326,2cyclictest141rcu_preempt23:05:000
354373499325,3cyclictest141rcu_preempt23:45:010
3543734993214,4cyclictest13-21ksoftirqd/021:45:210
3543734993211,3cyclictest13-21ksoftirqd/023:25:110
354373899319,4cyclictest26-21ksoftirqd/120:59:111
354373899319,3cyclictest26-21ksoftirqd/119:42:461
354373899318,4cyclictest26-21ksoftirqd/119:28:291
354373899316,3cyclictest141rcu_preempt21:20:111
354373899314,9cyclictest141rcu_preempt21:34:461
354373899313,3cyclictest141rcu_preempt19:55:021
354373899313,20cyclictest3564425-21apt-get20:00:131
354373899311,18cyclictest0-21swapper/122:25:411
354373899311,17cyclictest141rcu_preempt00:39:041
3543738993110,3cyclictest141rcu_preempt22:45:231
354373499319,4cyclictest13-21ksoftirqd/000:22:360
354373499317,3cyclictest141rcu_preempt19:15:230
354373499314,3cyclictest141rcu_preempt23:35:000
354373499313,6cyclictest13-21ksoftirqd/000:05:120
3543734993113,5cyclictest13-21ksoftirqd/023:50:000
3543734993111,4cyclictest13-21ksoftirqd/022:39:260
3543734993110,5cyclictest13-21ksoftirqd/022:55:000
3543734993110,5cyclictest13-21ksoftirqd/022:54:590
3543734993110,4cyclictest13-21ksoftirqd/021:37:490
354373899309,3cyclictest26-21ksoftirqd/121:49:451
354373899309,3cyclictest26-21ksoftirqd/119:52:231
354373899309,2cyclictest141rcu_preempt20:50:201
354373899309,2cyclictest141rcu_preempt20:29:101
354373899308,9cyclictest26-21ksoftirqd/120:20:201
354373899308,4cyclictest26-21ksoftirqd/123:21:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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