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2026-07-20 - 06:02
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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 rackdslot3.osadl.org (updated Mon Jul 20, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491240173,22phc2sys0-21swapper/319:08:103
295262230170,50sleep20-21swapper/219:07:022
294722205172,22sleep10-21swapper/119:06:191
296272202168,22sleep00-21swapper/019:07:470
139491163124,13phc2sys0-21swapper/319:10:003
1803121550,4sleep13008999cyclictest00:20:191
857621410,7sleep13008999cyclictest19:30:231
2853521340,7sleep03008899cyclictest23:35:160
30090997336,5cyclictest33-21ksoftirqd/222:45:002
139391710,1ptp4l391rcuc/321:45:183
3008999676,59cyclictest0-21swapper/123:25:531
3008999655,57cyclictest0-21swapper/122:05:531
30090996030,4cyclictest33-21ksoftirqd/220:25:182
271902590,5sleep227194-21irqrtprio20:10:192
44752580,3sleep20-21swapper/222:45:162
14292560,3sleep20-21swapper/223:45:212
139391560,1ptp4l401ktimersoftd/321:50:013
139391550,1ptp4l401ktimersoftd/323:31:193
30090995423,4cyclictest33-21ksoftirqd/219:15:012
30090995322,6cyclictest33-21ksoftirqd/221:45:212
30090995322,3cyclictest33-21ksoftirqd/221:05:272
30090995223,3cyclictest33-21ksoftirqd/221:20:282
300472520,2sleep20-21swapper/221:25:142
300472520,2sleep20-21swapper/221:25:132
30090995121,4cyclictest33-21ksoftirqd/222:30:222
139391510,1ptp4l401ktimersoftd/321:39:213
30090994920,4cyclictest33-21ksoftirqd/223:37:012
30090994920,4cyclictest33-21ksoftirqd/220:55:012
30090994919,4cyclictest33-21ksoftirqd/221:10:192
30090994918,4cyclictest33-21ksoftirqd/222:00:182
30090994818,4cyclictest33-21ksoftirqd/219:30:172
30090994817,4cyclictest33-21ksoftirqd/219:45:502
30090994811,6cyclictest33-21ksoftirqd/219:55:002
30090994811,4cyclictest33-21ksoftirqd/220:00:252
30090994719,3cyclictest33-21ksoftirqd/219:20:232
30090994717,3cyclictest33-21ksoftirqd/223:50:142
139391470,1ptp4l401ktimersoftd/300:38:293
30090994618,3cyclictest33-21ksoftirqd/220:35:002
30090994616,4cyclictest33-21ksoftirqd/223:25:542
30090994616,4cyclictest33-21ksoftirqd/219:15:102
30090994518,3cyclictest33-21ksoftirqd/223:45:012
30090994517,4cyclictest33-21ksoftirqd/200:07:142
30090994517,3cyclictest33-21ksoftirqd/222:55:212
30090994515,4cyclictest33-21ksoftirqd/200:40:012
30090994512,6cyclictest33-21ksoftirqd/220:20:262
30090994511,4cyclictest33-21ksoftirqd/200:25:162
30090994511,4cyclictest33-21ksoftirqd/200:25:162
30091994436,6cyclictest41-21ksoftirqd/320:40:003
30090994438,3cyclictest33-21ksoftirqd/221:20:002
30090994415,4cyclictest33-21ksoftirqd/220:15:172
30090994413,4cyclictest33-21ksoftirqd/222:10:152
30090994410,4cyclictest33-21ksoftirqd/219:35:192
30090994410,3cyclictest33-21ksoftirqd/221:30:232
139391440,1ptp4l401ktimersoftd/322:29:553
139391440,0ptp4l401ktimersoftd/322:15:143
30091994338,3cyclictest41-21ksoftirqd/323:20:003
30091994338,3cyclictest41-21ksoftirqd/323:19:593
30090994337,3cyclictest33-21ksoftirqd/200:00:012
30090994328,12cyclictest33-21ksoftirqd/200:10:132
30090994310,4cyclictest33-21ksoftirqd/219:25:142
139391430,0ptp4l401ktimersoftd/320:14:223
139391430,0ptp4l401ktimersoftd/319:32:433
139391430,0ptp4l401ktimersoftd/319:18:343
3009099427,6cyclictest33-21ksoftirqd/200:25:002
3009099427,2cyclictest121rcu_preempt22:05:182
30090994237,3cyclictest33-21ksoftirqd/221:45:002
30090994237,3cyclictest33-21ksoftirqd/220:00:002
139391420,0ptp4l401ktimersoftd/323:58:593
139391420,0ptp4l401ktimersoftd/322:58:423
139391420,0ptp4l401ktimersoftd/322:01:293
30090994136,3cyclictest33-21ksoftirqd/221:05:002
30090994135,3cyclictest33-21ksoftirqd/219:45:012
30090994135,3cyclictest33-21ksoftirqd/219:45:012
30090994133,2cyclictest33-21ksoftirqd/221:50:222
3009099410,5cyclictest33-21ksoftirqd/220:05:212
139391410,0ptp4l401ktimersoftd/320:15:313
3009099407,4cyclictest33-21ksoftirqd/223:16:202
3009099407,4cyclictest33-21ksoftirqd/223:16:202
30090994036,2cyclictest321ktimersoftd/222:35:162
30090994035,2cyclictest33-21ksoftirqd/221:40:002
30090994029,9cyclictest33-21ksoftirqd/222:25:272
30090994010,5cyclictest33-21ksoftirqd/223:10:142
139391400,1ptp4l401ktimersoftd/300:01:393
139391400,0ptp4l401ktimersoftd/322:20:153
3009099394,3cyclictest33-21ksoftirqd/200:15:182
3009099394,2cyclictest121rcu_preempt22:15:012
3009099393,3cyclictest121rcu_preempt20:40:252
30090993933,3cyclictest33-21ksoftirqd/223:20:272
3009099392,2cyclictest121rcu_preempt21:00:002
30090993912,3cyclictest33-21ksoftirqd/220:50:002
3009099384,3cyclictest121rcu_preempt00:00:142
30090993834,2cyclictest33-21ksoftirqd/222:00:002
30090993834,2cyclictest33-21ksoftirqd/200:35:012
30090993833,3cyclictest33-21ksoftirqd/223:05:002
30089993832,4cyclictest25-21ksoftirqd/123:20:451
57898370,5rtkit-daemon16094-21/usr/sbin/munin00:15:233
3009099379,9cyclictest33-21ksoftirqd/223:30:262
30090993731,3cyclictest33-21ksoftirqd/220:39:592
30091993630,3cyclictest41-21ksoftirqd/323:05:233
3009099365,3cyclictest33-21ksoftirqd/223:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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