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2026-07-14 - 23:23
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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 Tue Jul 14, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
231322228201,18sleep00-21swapper/007:06:590
230932206172,23sleep10-21swapper/107:06:271
138591204171,22phc2sys0-21swapper/307:07:003
231292200167,21sleep20-21swapper/207:06:572
219921650,6sleep12366699cyclictest08:35:171
2214321600,3sleep32366899cyclictest12:30:193
138491630,9ptp4l401ktimersoftd/310:37:393
23667995719,6cyclictest33-21ksoftirqd/208:15:002
138491560,1ptp4l391rcuc/308:00:283
135191550,2getstats0-21swapper/309:40:113
23667995215,7cyclictest33-21ksoftirqd/207:50:012
148832510,2sleep10-21swapper/110:05:201
23667995019,4cyclictest33-21ksoftirqd/212:20:222
23667994919,7cyclictest33-21ksoftirqd/209:30:182
23667994816,4cyclictest33-21ksoftirqd/210:55:002
23665994832,14cyclictest9-21ksoftirqd/012:35:000
23667994716,4cyclictest33-21ksoftirqd/208:00:202
2366799467,5cyclictest33-21ksoftirqd/208:30:172
23667994619,8cyclictest33-21ksoftirqd/212:10:192
23667994617,4cyclictest33-21ksoftirqd/211:50:002
23667994617,3cyclictest33-21ksoftirqd/209:15:122
23667994613,4cyclictest33-21ksoftirqd/209:15:012
134991460,1getstats0-21swapper/307:25:163
2366799457,6cyclictest33-21ksoftirqd/208:50:142
2366799453,4cyclictest33-21ksoftirqd/211:30:262
23667994512,5cyclictest33-21ksoftirqd/211:20:282
2366599451,41cyclictest23360-21cron08:15:000
2366799449,10cyclictest33-21ksoftirqd/208:45:002
23667994431,10cyclictest33-21ksoftirqd/207:10:232
23667994413,3cyclictest33-21ksoftirqd/209:50:012
23667994410,5cyclictest33-21ksoftirqd/207:41:152
138491440,0ptp4l401ktimersoftd/309:29:043
23668994338,3cyclictest13457-21basename12:15:003
2366799439,7cyclictest33-21ksoftirqd/209:55:152
2366799438,9cyclictest33-21ksoftirqd/209:55:002
2366799438,8cyclictest33-21ksoftirqd/210:10:232
23667994331,10cyclictest33-21ksoftirqd/207:15:132
23667994315,4cyclictest33-21ksoftirqd/212:35:212
23667994315,3cyclictest33-21ksoftirqd/212:25:192
23667994315,3cyclictest33-21ksoftirqd/210:45:172
23667994315,3cyclictest33-21ksoftirqd/210:45:172
23667994312,7cyclictest33-21ksoftirqd/211:40:192
23667994312,3cyclictest33-21ksoftirqd/208:50:002
2366699435,9cyclictest25-21ksoftirqd/107:25:221
23665994338,3cyclictest18451-21cron08:04:590
138491430,0ptp4l401ktimersoftd/308:40:103
2366799429,6cyclictest33-21ksoftirqd/208:05:152
2366799427,10cyclictest33-21ksoftirqd/209:35:012
2366799425,5cyclictest33-21ksoftirqd/211:10:142
23667994215,3cyclictest33-21ksoftirqd/208:55:282
1385914211,7phc2sys41-21ksoftirqd/309:05:233
138491420,0ptp4l401ktimersoftd/312:26:173
23668994136,3cyclictest223-21systemd-journal11:01:073
2366799419,8cyclictest33-21ksoftirqd/209:00:242
2366799419,5cyclictest33-21ksoftirqd/211:35:282
2366799417,7cyclictest33-21ksoftirqd/207:25:262
2366799417,5cyclictest33-21ksoftirqd/208:39:592
2366799413,3cyclictest121rcu_preempt07:23:032
23667994116,8cyclictest33-21ksoftirqd/209:05:152
23667994115,9cyclictest33-21ksoftirqd/212:15:172
23667994113,6cyclictest33-21ksoftirqd/208:25:162
23667994112,4cyclictest33-21ksoftirqd/207:35:142
2366799410,3cyclictest121rcu_preempt10:55:202
23666994136,3cyclictest25-21ksoftirqd/110:30:001
23665994136,3cyclictest1140-21sh10:44:590
2366799405,3cyclictest121rcu_preempt11:55:002
23667994034,3cyclictest33-21ksoftirqd/210:25:192
23667994015,7cyclictest33-21ksoftirqd/210:35:122
23667994014,7cyclictest33-21ksoftirqd/210:00:212
2366799400,2cyclictest121rcu_preempt11:20:012
2366799400,2cyclictest121rcu_preempt11:20:012
23668993933,4cyclictest41-21ksoftirqd/311:09:593
2366799395,3cyclictest33-21ksoftirqd/211:00:132
23667993934,3cyclictest33-21ksoftirqd/209:25:232
23667993911,7cyclictest33-21ksoftirqd/210:15:162
23667993911,7cyclictest33-21ksoftirqd/208:20:132
2366699396,4cyclictest25-21ksoftirqd/111:25:161
23667993832,3cyclictest33-21ksoftirqd/210:05:122
2366799381,7cyclictest33-21ksoftirqd/210:20:222
23667993815,6cyclictest33-21ksoftirqd/211:45:142
23666993834,2cyclictest25-21ksoftirqd/110:50:141
23666993831,5cyclictest25-21ksoftirqd/109:55:571
23666993831,4cyclictest3876-21wc08:40:131
138491380,0ptp4l401ktimersoftd/310:30:133
23668993731,4cyclictest41-21ksoftirqd/310:49:093
23668993731,4cyclictest41-21ksoftirqd/310:49:093
23668993724,11cyclictest41-21ksoftirqd/309:15:013
2366799374,5cyclictest33-21ksoftirqd/212:30:182
23667993732,3cyclictest33-21ksoftirqd/212:00:002
23667993732,3cyclictest33-21ksoftirqd/209:40:272
23667993732,3cyclictest33-21ksoftirqd/207:50:152
23667993731,3cyclictest33-21ksoftirqd/207:30:152
2366799370,7cyclictest33-21ksoftirqd/210:40:242
2366699374,4cyclictest25-21ksoftirqd/109:15:011
2366699374,3cyclictest121rcu_preempt09:39:591
23666993732,3cyclictest25-21ksoftirqd/110:20:191
23666993732,3cyclictest25-21ksoftirqd/109:40:181
23666993732,3cyclictest25-21ksoftirqd/108:15:191
23666993731,4cyclictest25-21ksoftirqd/112:29:181
23666993731,4cyclictest25-21ksoftirqd/107:56:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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