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2026-03-24 - 01:22
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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 Mar 23, 2026 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106102234167,22sleep20-21swapper/207:07:252
138591229162,22phc2sys0-21swapper/307:08:453
104972201169,22sleep10-21swapper/107:05:561
107032195163,21sleep00-21swapper/007:08:360
11269995815,8cyclictest41-21ksoftirqd/307:49:593
308742560,1sleep10-21swapper/107:49:591
11269995538,14cyclictest41-21ksoftirqd/308:30:003
11269995526,3cyclictest41-21ksoftirqd/307:25:253
11269995525,3cyclictest41-21ksoftirqd/312:30:153
159912540,4sleep215994-21latency_hist10:35:002
11269995424,7cyclictest41-21ksoftirqd/312:20:113
58882530,1sleep30-21swapper/309:10:003
11269995327,7cyclictest41-21ksoftirqd/309:45:143
11269995324,8cyclictest41-21ksoftirqd/310:30:133
11269995320,8cyclictest41-21ksoftirqd/312:10:123
11269995320,7cyclictest41-21ksoftirqd/307:55:123
11269995223,3cyclictest41-21ksoftirqd/311:15:143
11269995221,7cyclictest41-21ksoftirqd/310:05:293
11269995221,4cyclictest41-21ksoftirqd/310:35:163
11269995220,4cyclictest41-21ksoftirqd/309:35:183
11269995122,8cyclictest41-21ksoftirqd/308:35:143
11269995120,8cyclictest41-21ksoftirqd/312:15:243
11269995120,3cyclictest41-21ksoftirqd/308:20:003
11269995119,7cyclictest41-21ksoftirqd/311:30:153
11269995117,4cyclictest41-21ksoftirqd/310:15:243
11269995021,4cyclictest41-21ksoftirqd/312:25:223
11269995020,8cyclictest41-21ksoftirqd/312:40:023
11269995020,8cyclictest41-21ksoftirqd/309:55:203
11269995019,8cyclictest41-21ksoftirqd/310:55:003
11269995018,8cyclictest41-21ksoftirqd/308:55:213
11269995017,4cyclictest41-21ksoftirqd/309:55:003
11269995015,10cyclictest41-21ksoftirqd/310:10:193
11269994921,3cyclictest41-21ksoftirqd/309:30:203
11269994917,8cyclictest41-21ksoftirqd/311:35:133
11269994914,7cyclictest41-21ksoftirqd/308:50:003
11269994822,3cyclictest41-21ksoftirqd/311:40:163
11269994819,7cyclictest41-21ksoftirqd/310:25:273
11269994819,3cyclictest41-21ksoftirqd/311:45:193
11269994818,7cyclictest41-21ksoftirqd/312:00:173
11269994720,8cyclictest41-21ksoftirqd/310:55:143
11269994720,8cyclictest41-21ksoftirqd/310:55:133
11269994719,6cyclictest41-21ksoftirqd/307:30:283
11269994719,3cyclictest41-21ksoftirqd/308:50:183
11269994718,8cyclictest41-21ksoftirqd/307:50:193
11269994718,7cyclictest41-21ksoftirqd/308:10:113
11269994715,4cyclictest41-21ksoftirqd/307:44:593
11269994714,7cyclictest41-21ksoftirqd/309:20:253
11269994622,17cyclictest41-21ksoftirqd/307:20:003
11269994620,6cyclictest41-21ksoftirqd/308:05:143
11269994618,4cyclictest41-21ksoftirqd/307:35:283
11269994616,3cyclictest41-21ksoftirqd/312:05:133
11269994614,5cyclictest41-21ksoftirqd/311:25:003
11269994610,4cyclictest41-21ksoftirqd/311:25:193
11269994610,4cyclictest41-21ksoftirqd/311:25:183
173362450,2sleep20-21swapper/209:30:172
135191450,7getstats1126999cyclictest08:42:473
1126999458,4cyclictest41-21ksoftirqd/308:00:263
11269994529,13cyclictest41-21ksoftirqd/309:25:193
11269994516,8cyclictest41-21ksoftirqd/308:30:133
11269994515,8cyclictest41-21ksoftirqd/308:20:133
1126999442,2cyclictest22413-21grep10:45:213
11269994411,4cyclictest41-21ksoftirqd/307:10:233
11268994437,4cyclictest18200-21cron08:29:592
11269994313,8cyclictest41-21ksoftirqd/310:00:223
11269994310,3cyclictest41-21ksoftirqd/309:15:143
1126999427,4cyclictest41-21ksoftirqd/309:05:133
1126999421,7cyclictest41-21ksoftirqd/311:55:213
1126999421,7cyclictest41-21ksoftirqd/311:55:213
11269994212,4cyclictest41-21ksoftirqd/310:20:143
11269994212,4cyclictest41-21ksoftirqd/309:40:143
11269994210,10cyclictest41-21ksoftirqd/311:11:123
1126999411,3cyclictest121rcu_preempt11:00:133
11269994034,3cyclictest41-21ksoftirqd/310:40:213
1126999401,8cyclictest41-21ksoftirqd/307:20:233
1126999401,8cyclictest41-21ksoftirqd/307:20:233
1126999400,2cyclictest41-21ksoftirqd/311:55:003
11267993933,3cyclictest25-21ksoftirqd/109:45:181
1126999382,2cyclictest121rcu_preempt11:05:173
1126999382,2cyclictest121rcu_preempt09:00:193
11267993730,5cyclictest25-21ksoftirqd/109:10:111
11268993631,3cyclictest33-21ksoftirqd/209:04:502
11268993630,4cyclictest33-21ksoftirqd/211:15:362
11268993630,4cyclictest33-21ksoftirqd/210:20:292
11268993630,4cyclictest33-21ksoftirqd/208:54:112
11268993630,4cyclictest33-21ksoftirqd/208:43:532
11268993630,3cyclictest33-21ksoftirqd/208:05:002
1126899360,35cyclictest0-21swapper/207:15:232
11267993631,3cyclictest25-21ksoftirqd/107:40:011
11267993630,4cyclictest25-21ksoftirqd/112:26:081
11267993630,4cyclictest25-21ksoftirqd/111:51:261
11266993631,3cyclictest9-21ksoftirqd/012:25:010
11266993630,4cyclictest9-21ksoftirqd/012:39:470
11266993630,4cyclictest9-21ksoftirqd/008:07:480
264132350,1sleep10-21swapper/112:00:171
11268993530,3cyclictest33-21ksoftirqd/211:06:052
11268993526,7cyclictest33-21ksoftirqd/210:35:562
11267993529,4cyclictest25-21ksoftirqd/110:44:071
11267993529,4cyclictest25-21ksoftirqd/110:32:261
11267993529,4cyclictest25-21ksoftirqd/109:52:151
11267993529,4cyclictest25-21ksoftirqd/108:05:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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