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2026-03-21 - 22:19
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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 Sat Mar 21, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2322021700,6sleep12992799cyclictest08:00:371
953521540,7sleep12992799cyclictest08:19:271
2953729262,21sleep10-21swapper/107:09:191
2947429166,16sleep00-21swapper/007:08:310
1394919165,17phc2sys0-21swapper/307:05:413
2944628965,15sleep20-21swapper/207:08:092
299172830,4sleep229931-21spawn08:13:262
159852790,3sleep10-21swapper/108:21:221
296622710,2sleep20-21swapper/208:21:442
214082710,5sleep221140-21execl08:00:062
232882690,6sleep323260-21execl08:01:163
19772670,3sleep02007-21sh08:21:510
103642610,4sleep310367-21sh08:17:293
254562580,3sleep025441-21sh08:17:420
139391560,0ptp4l401ktimersoftd/307:10:103
219322530,3sleep021141-21execl08:00:160
59522490,3sleep25951-21sh08:19:532
29926994639,4cyclictest23119-21sh12:15:000
29929994413,29cyclictest11797-21kworker/3:009:46:233
139391430,1ptp4l401ktimersoftd/310:17:593
29926994136,3cyclictest9-21ksoftirqd/009:00:000
139391410,0ptp4l401ktimersoftd/310:00:113
139391410,0ptp4l401ktimersoftd/308:55:263
29927993833,3cyclictest25-21ksoftirqd/107:59:541
29927993832,4cyclictest25-21ksoftirqd/107:10:391
29927993831,4cyclictest25-21ksoftirqd/107:22:341
29926993834,2cyclictest111rcuc/008:14:180
29926993833,3cyclictest9-21ksoftirqd/010:10:010
29926993833,3cyclictest9-21ksoftirqd/009:45:270
29926993832,4cyclictest9-21ksoftirqd/008:40:000
139391380,0ptp4l401ktimersoftd/308:20:323
29928993732,3cyclictest33-21ksoftirqd/211:10:562
29928993731,4cyclictest33-21ksoftirqd/207:57:092
29928993731,4cyclictest33-21ksoftirqd/207:42:302
29927993732,3cyclictest25-21ksoftirqd/108:13:271
29927993732,2cyclictest25-21ksoftirqd/107:39:591
29927993730,4cyclictest25-21ksoftirqd/110:05:001
29926993733,3cyclictest9-21ksoftirqd/010:40:000
29926993733,3cyclictest9-21ksoftirqd/008:25:270
29926993732,2cyclictest9-21ksoftirqd/009:30:000
139391370,0ptp4l401ktimersoftd/309:35:123
29929993630,4cyclictest41-21ksoftirqd/312:00:543
29929993615,20cyclictest15957-21kworker/3:111:52:223
29928993631,3cyclictest33-21ksoftirqd/210:59:332
29928993631,3cyclictest33-21ksoftirqd/207:15:012
29928993630,4cyclictest33-21ksoftirqd/210:54:052
29928993630,4cyclictest33-21ksoftirqd/209:15:482
29928993630,4cyclictest33-21ksoftirqd/208:50:572
29928993629,4cyclictest33-21ksoftirqd/210:23:242
29927993631,3cyclictest25-21ksoftirqd/111:35:011
29927993631,3cyclictest25-21ksoftirqd/110:47:561
29927993631,3cyclictest25-21ksoftirqd/107:50:001
29927993630,4cyclictest25-21ksoftirqd/111:54:521
29927993630,4cyclictest25-21ksoftirqd/109:41:231
29927993630,4cyclictest25-21ksoftirqd/109:32:201
29927993630,4cyclictest25-21ksoftirqd/107:19:541
29927993630,3cyclictest25-21ksoftirqd/112:10:121
29927993629,4cyclictest25-21ksoftirqd/108:39:411
29926993631,3cyclictest9-21ksoftirqd/012:25:140
29926993631,3cyclictest9-21ksoftirqd/010:15:130
29926993630,3cyclictest9-21ksoftirqd/008:50:000
29926993629,4cyclictest9-21ksoftirqd/011:00:000
29929993531,3cyclictest41-21ksoftirqd/309:00:263
29929993530,3cyclictest41-21ksoftirqd/312:33:593
29929993530,3cyclictest41-21ksoftirqd/309:43:123
29929993530,3cyclictest41-21ksoftirqd/308:13:263
29929993530,3cyclictest41-21ksoftirqd/307:50:043
29929993530,3cyclictest41-21ksoftirqd/307:47:583
29929993530,3cyclictest41-21ksoftirqd/307:32:553
29929993529,4cyclictest41-21ksoftirqd/311:40:583
29928993531,2cyclictest33-21ksoftirqd/207:20:002
29928993529,4cyclictest33-21ksoftirqd/212:10:562
29928993529,4cyclictest33-21ksoftirqd/211:03:272
29928993529,4cyclictest33-21ksoftirqd/210:27:242
29928993529,3cyclictest33-21ksoftirqd/209:00:162
29927993530,3cyclictest25-21ksoftirqd/110:20:121
29927993530,3cyclictest25-21ksoftirqd/109:55:201
29927993530,3cyclictest25-21ksoftirqd/108:35:011
29927993529,4cyclictest25-21ksoftirqd/112:32:001
29927993529,4cyclictest25-21ksoftirqd/110:59:091
29927993529,4cyclictest25-21ksoftirqd/110:37:271
29927993529,4cyclictest25-21ksoftirqd/110:07:061
29927993529,3cyclictest25-21ksoftirqd/112:00:181
29927993529,3cyclictest25-21ksoftirqd/112:00:011
29927993529,3cyclictest25-21ksoftirqd/112:00:001
29927993529,3cyclictest25-21ksoftirqd/109:50:101
29927993528,4cyclictest25-21ksoftirqd/110:40:191
29927993528,4cyclictest25-21ksoftirqd/108:57:261
2992699355,2cyclictest121rcu_preempt09:55:000
2992699354,3cyclictest9-21ksoftirqd/011:55:160
2992699354,3cyclictest9-21ksoftirqd/011:55:160
29926993530,3cyclictest9-21ksoftirqd/010:25:230
29926993530,3cyclictest9-21ksoftirqd/007:15:010
29926993530,2cyclictest9-21ksoftirqd/011:45:000
29926993529,3cyclictest9-21ksoftirqd/009:57:380
29926993529,3cyclictest9-21ksoftirqd/007:59:560
139391350,0ptp4l401ktimersoftd/312:35:283
29929993429,3cyclictest41-21ksoftirqd/309:34:393
29929993428,4cyclictest41-21ksoftirqd/312:10:013
29929993428,4cyclictest41-21ksoftirqd/311:47:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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