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2026-04-03 - 06:21
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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 Fri Apr 03, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228062203169,22sleep30-21swapper/319:08:473
227732202169,22sleep20-21swapper/219:08:222
227422201169,21sleep10-21swapper/119:07:561
226222201167,22sleep00-21swapper/019:06:310
189721400,6sleep12319399cyclictest21:40:201
460621160,2sleep32319599cyclictest19:35:223
313932600,7sleep22319499cyclictest19:25:182
23195995123,2cyclictest41-21ksoftirqd/323:35:263
134991480,6getstats2319599cyclictest21:51:433
2319599460,3cyclictest121rcu_preempt23:35:003
2290124535,5sleep00-21swapper/019:10:000
154972430,1sleep10-21swapper/122:10:001
138491430,0ptp4l401ktimersoftd/322:24:393
138491430,0ptp4l401ktimersoftd/320:34:043
2319599426,3cyclictest41-21ksoftirqd/319:15:243
138491420,0ptp4l401ktimersoftd/321:41:523
138491420,0ptp4l401ktimersoftd/300:29:373
2319599415,10cyclictest41-21ksoftirqd/322:25:163
138491410,0ptp4l401ktimersoftd/319:20:393
2319599407,6cyclictest41-21ksoftirqd/300:15:013
23195994034,3cyclictest41-21ksoftirqd/320:59:593
2319599401,3cyclictest121rcu_preempt22:30:203
23195994012,3cyclictest41-21ksoftirqd/323:00:163
138491400,1ptp4l401ktimersoftd/320:21:213
138491400,0ptp4l401ktimersoftd/323:11:093
2319599394,2cyclictest41-21ksoftirqd/321:30:263
23195993934,3cyclictest41-21ksoftirqd/321:30:003
23194993932,4cyclictest33-21ksoftirqd/223:59:462
2319599389,9cyclictest41-21ksoftirqd/323:05:173
2319599389,3cyclictest41-21ksoftirqd/319:54:593
2319599387,4cyclictest41-21ksoftirqd/323:50:213
2319599386,3cyclictest41-21ksoftirqd/322:55:223
2319599386,10cyclictest41-21ksoftirqd/320:45:253
2319599383,6cyclictest41-21ksoftirqd/322:10:123
23195993834,2cyclictest41-21ksoftirqd/323:29:593
23195993834,2cyclictest41-21ksoftirqd/322:15:253
23195993820,2cyclictest41-21ksoftirqd/323:20:123
138491380,0ptp4l401ktimersoftd/323:55:133
2319599379,6cyclictest41-21ksoftirqd/321:05:243
23195993734,2cyclictest41-21ksoftirqd/321:12:023
23195993732,3cyclictest41-21ksoftirqd/321:55:153
23195993732,3cyclictest41-21ksoftirqd/319:49:593
23195993732,3cyclictest41-21ksoftirqd/319:35:003
23195993731,3cyclictest41-21ksoftirqd/322:55:003
23195993723,12cyclictest41-21ksoftirqd/319:25:113
2319599371,4cyclictest41-21ksoftirqd/300:35:183
23194993732,3cyclictest33-21ksoftirqd/222:05:132
23194993731,4cyclictest33-21ksoftirqd/222:33:242
2319399378,27cyclictest0-21swapper/119:45:031
138491370,1ptp4l401ktimersoftd/319:10:013
2319599368,3cyclictest41-21ksoftirqd/321:00:203
2319599366,2cyclictest41-21ksoftirqd/323:15:163
23195993633,2cyclictest41-21ksoftirqd/319:59:593
23195993631,3cyclictest41-21ksoftirqd/320:55:003
23195993631,2cyclictest41-21ksoftirqd/320:40:233
23195993629,4cyclictest41-21ksoftirqd/320:01:013
23194993631,3cyclictest33-21ksoftirqd/223:40:112
23194993630,4cyclictest33-21ksoftirqd/221:27:342
23192993630,4cyclictest9-21ksoftirqd/020:52:210
23192993630,4cyclictest9-21ksoftirqd/020:39:530
23192993630,4cyclictest9-21ksoftirqd/019:18:410
138491360,0ptp4l401ktimersoftd/321:45:193
138491360,0ptp4l401ktimersoftd/300:30:043
138491360,0ptp4l401ktimersoftd/300:30:033
2319599358,4cyclictest41-21ksoftirqd/321:15:143
2319599356,6cyclictest41-21ksoftirqd/322:00:133
23195993532,2cyclictest41-21ksoftirqd/320:35:263
23195993531,2cyclictest41-21ksoftirqd/320:10:273
23195993531,2cyclictest41-21ksoftirqd/300:05:013
23195993531,2cyclictest41-21ksoftirqd/300:05:013
23195993530,3cyclictest41-21ksoftirqd/322:45:143
23195993530,3cyclictest41-21ksoftirqd/320:05:203
2319599351,6cyclictest41-21ksoftirqd/300:05:143
23194993530,3cyclictest33-21ksoftirqd/223:31:502
23194993530,3cyclictest33-21ksoftirqd/220:32:202
23194993529,4cyclictest33-21ksoftirqd/223:17:012
23194993529,4cyclictest33-21ksoftirqd/221:00:422
23194993529,4cyclictest33-21ksoftirqd/220:38:462
23194993529,4cyclictest33-21ksoftirqd/220:21:252
23194993529,4cyclictest33-21ksoftirqd/200:28:092
23194993529,4cyclictest33-21ksoftirqd/200:23:482
2319499350,2cyclictest121rcu_preempt19:37:552
23193993529,4cyclictest25-21ksoftirqd/122:51:051
23193993529,4cyclictest25-21ksoftirqd/100:06:431
23193993528,5cyclictest25-21ksoftirqd/123:09:371
23193993528,4cyclictest25-21ksoftirqd/121:00:411
23193993528,4cyclictest25-21ksoftirqd/100:31:221
23193993528,4cyclictest25-21ksoftirqd/100:31:211
23193993528,4cyclictest25-21ksoftirqd/100:10:131
23192993530,3cyclictest9-21ksoftirqd/023:05:110
23192993530,3cyclictest9-21ksoftirqd/022:20:140
23192993529,4cyclictest9-21ksoftirqd/023:54:210
23192993529,4cyclictest9-21ksoftirqd/023:30:300
23192993529,4cyclictest9-21ksoftirqd/020:41:580
23192993529,4cyclictest9-21ksoftirqd/020:18:110
23192993529,4cyclictest9-21ksoftirqd/000:14:310
2319599348,7cyclictest41-21ksoftirqd/323:45:003
2319599347,6cyclictest41-21ksoftirqd/322:40:143
23195993430,3cyclictest41-21ksoftirqd/322:40:013
23195993430,3cyclictest41-21ksoftirqd/320:30:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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