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2026-08-27 - 21:36
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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 Thu Aug 27, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253792205170,23sleep00-21swapper/007:05:490
254672204170,23sleep10-21swapper/107:06:571
138591204170,22phc2sys0-21swapper/307:07:023
253862199167,21sleep20-21swapper/207:05:542
416621430,6sleep22622499cyclictest07:30:142
26222996119,5cyclictest25-21ksoftirqd/112:05:171
26222995825,4cyclictest25-21ksoftirqd/108:20:011
26222995527,3cyclictest25-21ksoftirqd/108:00:001
26222995426,7cyclictest25-21ksoftirqd/108:15:001
26222995322,6cyclictest25-21ksoftirqd/110:10:001
26222995222,4cyclictest25-21ksoftirqd/111:50:191
36072510,3sleep30-21swapper/310:45:153
26222995014,4cyclictest25-21ksoftirqd/107:50:271
2622299498,7cyclictest25-21ksoftirqd/111:40:251
26222994921,4cyclictest25-21ksoftirqd/111:45:141
26222994918,3cyclictest25-21ksoftirqd/112:30:231
26222994918,3cyclictest25-21ksoftirqd/108:05:181
26222994917,4cyclictest25-21ksoftirqd/111:35:151
26222994917,4cyclictest25-21ksoftirqd/110:15:131
26222994915,3cyclictest25-21ksoftirqd/112:20:221
26222994914,4cyclictest25-21ksoftirqd/110:55:241
170952490,1sleep00-21swapper/009:00:210
26222994818,4cyclictest25-21ksoftirqd/107:15:151
26222994813,4cyclictest25-21ksoftirqd/107:40:221
2622299479,8cyclictest25-21ksoftirqd/107:20:141
2622299478,10cyclictest25-21ksoftirqd/112:25:121
2622299477,10cyclictest25-21ksoftirqd/112:35:211
2622299477,10cyclictest25-21ksoftirqd/112:35:201
2622299476,9cyclictest25-21ksoftirqd/111:55:251
26222994719,7cyclictest25-21ksoftirqd/107:40:001
26222994713,3cyclictest25-21ksoftirqd/111:20:231
26222994711,4cyclictest25-21ksoftirqd/110:45:171
26222994710,8cyclictest25-21ksoftirqd/108:55:231
67472460,3sleep00-21swapper/010:50:220
26224994635,9cyclictest33-21ksoftirqd/208:45:112
2622299466,10cyclictest25-21ksoftirqd/110:10:141
2622299465,7cyclictest25-21ksoftirqd/108:25:241
26222994626,3cyclictest25-21ksoftirqd/109:40:281
26222994618,7cyclictest25-21ksoftirqd/109:35:001
26222994614,4cyclictest25-21ksoftirqd/111:30:231
26222994612,4cyclictest25-21ksoftirqd/110:35:121
26222994612,4cyclictest25-21ksoftirqd/108:20:171
26222994610,4cyclictest25-21ksoftirqd/108:00:201
2622299460,2cyclictest121rcu_preempt10:55:011
2622299458,7cyclictest25-21ksoftirqd/109:35:181
2622299456,4cyclictest25-21ksoftirqd/112:10:121
26222994515,7cyclictest25-21ksoftirqd/110:00:171
26222994513,4cyclictest25-21ksoftirqd/109:05:241
26222994512,3cyclictest25-21ksoftirqd/112:00:231
2622299449,7cyclictest25-21ksoftirqd/108:45:131
2622299447,7cyclictest25-21ksoftirqd/107:30:221
2622299442,9cyclictest25-21ksoftirqd/110:20:181
26222994418,7cyclictest25-21ksoftirqd/109:20:181
26222994416,3cyclictest25-21ksoftirqd/109:25:271
26222994414,7cyclictest25-21ksoftirqd/109:58:091
26222994411,6cyclictest25-21ksoftirqd/109:10:231
2622299438,4cyclictest25-21ksoftirqd/112:15:221
2622299437,8cyclictest25-21ksoftirqd/109:00:201
2622299437,7cyclictest25-21ksoftirqd/110:25:261
2622299435,7cyclictest25-21ksoftirqd/109:15:141
26222994314,6cyclictest25-21ksoftirqd/109:50:011
26222994313,8cyclictest25-21ksoftirqd/108:40:131
26222994311,7cyclictest25-21ksoftirqd/108:55:001
26222994310,4cyclictest25-21ksoftirqd/108:30:121
2622299426,9cyclictest25-21ksoftirqd/107:15:001
26222994210,3cyclictest25-21ksoftirqd/107:45:141
26222994210,3cyclictest25-21ksoftirqd/107:45:141
138491420,1ptp4l401ktimersoftd/308:54:353
138491420,0ptp4l401ktimersoftd/310:41:593
26225994126,12cyclictest41-21ksoftirqd/310:20:113
26222994111,8cyclictest25-21ksoftirqd/110:30:521
26222994110,7cyclictest25-21ksoftirqd/110:40:201
26224994034,3cyclictest33-21ksoftirqd/211:40:002
2622299403,2cyclictest12736-21cron11:05:001
2622299403,2cyclictest121rcu_preempt08:35:121
138491400,0ptp4l401ktimersoftd/310:13:183
135191400,1getstats5686-1kworker/3:0H07:50:533
26224993934,3cyclictest33-21ksoftirqd/212:15:012
26224993934,3cyclictest33-21ksoftirqd/208:55:002
138491390,1ptp4l401ktimersoftd/309:55:333
138491390,0ptp4l401ktimersoftd/308:15:213
26225993832,4cyclictest41-21ksoftirqd/307:30:103
26224993832,4cyclictest33-21ksoftirqd/209:05:002
26224993832,3cyclictest33-21ksoftirqd/207:10:122
2622299385,7cyclictest25-21ksoftirqd/111:15:161
26222993832,3cyclictest25-21ksoftirqd/109:50:271
26222993812,7cyclictest25-21ksoftirqd/111:05:241
138491380,0ptp4l401ktimersoftd/310:05:123
26224993732,3cyclictest33-21ksoftirqd/210:30:002
26224993731,4cyclictest33-21ksoftirqd/209:39:062
26224993731,4cyclictest33-21ksoftirqd/209:27:272
26224993731,4cyclictest33-21ksoftirqd/209:19:012
26224993731,4cyclictest33-21ksoftirqd/208:03:512
26224993730,5cyclictest33-21ksoftirqd/210:47:472
26224993725,10cyclictest33-21ksoftirqd/210:20:272
2622499370,35cyclictest5701-21cron08:40:002
26222993731,3cyclictest25-21ksoftirqd/111:25:261
26222993731,3cyclictest25-21ksoftirqd/111:10:171
2622299370,2cyclictest121rcu_preempt07:25:271
26225993630,4cyclictest41-21ksoftirqd/312:05:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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