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2026-03-15 - 00:22
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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 Sat Mar 14, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91132227164,51sleep30-21swapper/307:08:483
91172203170,21sleep20-21swapper/207:08:512
91612201167,23sleep10-21swapper/107:09:261
69952195161,22sleep00-21swapper/007:05:110
138491690,14ptp4l0-21swapper/307:25:143
138491610,1ptp4l401ktimersoftd/312:16:023
79072600,2sleep27911-21irqrtprio09:15:192
119902600,3sleep30-21swapper/310:30:133
111662580,2sleep10-21swapper/110:25:261
155462570,5sleep015549-21irqrtprio11:40:190
313262530,4sleep2321ktimersoftd/211:05:262
274912520,2sleep10-21swapper/109:55:171
138491520,1ptp4l401ktimersoftd/310:10:273
138491510,1ptp4l401ktimersoftd/311:46:523
950299471,43cyclictest29469-21latency_hist11:05:002
138491430,0ptp4l401ktimersoftd/308:55:153
950199421,3cyclictest121rcu_preempt08:19:301
138491420,0ptp4l401ktimersoftd/312:00:503
138491420,0ptp4l401ktimersoftd/308:19:323
138491420,0ptp4l401ktimersoftd/307:41:343
9502994036,2cyclictest33-21ksoftirqd/209:00:002
9502994035,3cyclictest33-21ksoftirqd/208:30:002
9502994028,10cyclictest33-21ksoftirqd/209:10:262
2944324033,3sleep341-21ksoftirqd/311:05:003
9502993932,4cyclictest26625-21cron09:55:002
9503993833,3cyclictest41-21ksoftirqd/308:35:003
9503993830,4cyclictest41-21ksoftirqd/312:20:133
9502993833,3cyclictest33-21ksoftirqd/211:50:012
9502993833,3cyclictest33-21ksoftirqd/208:50:172
9502993832,3cyclictest33-21ksoftirqd/209:05:012
9502993832,3cyclictest33-21ksoftirqd/207:50:002
9502993831,5cyclictest33-21ksoftirqd/212:10:162
9502993831,5cyclictest33-21ksoftirqd/212:10:162
9502993827,9cyclictest33-21ksoftirqd/209:35:202
50798380,3rtkit-daemon3370-21python08:00:232
138491380,0ptp4l401ktimersoftd/310:15:203
9503993731,4cyclictest41-21ksoftirqd/311:31:223
950399371,6cyclictest155452missed_timers10:35:223
9502993731,4cyclictest33-21ksoftirqd/211:32:422
9502993725,9cyclictest33-21ksoftirqd/210:40:252
9501993731,4cyclictest25-21ksoftirqd/107:21:361
138491370,0ptp4l401ktimersoftd/311:38:013
9503993630,4cyclictest41-21ksoftirqd/312:31:523
9502993632,2cyclictest33-21ksoftirqd/207:20:002
9502993631,3cyclictest33-21ksoftirqd/211:40:002
9502993631,3cyclictest33-21ksoftirqd/208:00:002
9502993630,4cyclictest33-21ksoftirqd/207:53:032
9502993629,5cyclictest33-21ksoftirqd/207:28:112
9502993629,4cyclictest33-21ksoftirqd/211:40:132
9502993625,9cyclictest33-21ksoftirqd/211:25:172
9501993631,3cyclictest25-21ksoftirqd/109:53:591
9501993630,4cyclictest25-21ksoftirqd/111:33:461
9500993630,3cyclictest9-21ksoftirqd/009:08:590
9500993629,5cyclictest9-21ksoftirqd/007:48:150
9503993529,4cyclictest41-21ksoftirqd/308:40:453
9503993520,13cyclictest41-21ksoftirqd/308:25:003
9502993530,3cyclictest33-21ksoftirqd/208:10:102
9502993530,3cyclictest33-21ksoftirqd/207:30:182
9502993530,2cyclictest33-21ksoftirqd/209:35:002
9502993529,4cyclictest33-21ksoftirqd/211:13:522
9502993529,4cyclictest33-21ksoftirqd/210:06:212
9502993529,4cyclictest33-21ksoftirqd/209:42:342
9502993528,4cyclictest33-21ksoftirqd/211:24:242
9502993523,10cyclictest33-21ksoftirqd/208:35:252
950199357,26cyclictest0-21swapper/112:35:321
9501993530,3cyclictest25-21ksoftirqd/107:40:001
9501993529,4cyclictest25-21ksoftirqd/110:02:471
9501993529,4cyclictest25-21ksoftirqd/109:16:581
9501993529,4cyclictest25-21ksoftirqd/109:12:011
9501993529,4cyclictest25-21ksoftirqd/108:52:111
9501993529,4cyclictest25-21ksoftirqd/107:55:381
9500993530,3cyclictest9-21ksoftirqd/010:35:240
9500993529,4cyclictest9-21ksoftirqd/010:56:540
9500993529,4cyclictest9-21ksoftirqd/010:52:290
9500993529,4cyclictest9-21ksoftirqd/010:52:290
9500993529,4cyclictest9-21ksoftirqd/010:44:220
9500993529,4cyclictest9-21ksoftirqd/010:26:370
9500993529,4cyclictest9-21ksoftirqd/009:11:150
9500993529,4cyclictest9-21ksoftirqd/007:50:280
9500993529,4cyclictest9-21ksoftirqd/007:17:580
138491350,0ptp4l401ktimersoftd/309:05:063
9503993429,3cyclictest41-21ksoftirqd/312:11:073
9503993429,3cyclictest41-21ksoftirqd/312:11:073
9503993429,3cyclictest41-21ksoftirqd/311:14:073
9503993429,3cyclictest41-21ksoftirqd/308:25:113
9503993428,4cyclictest41-21ksoftirqd/311:26:343
9503993428,4cyclictest41-21ksoftirqd/311:07:403
9503993428,4cyclictest41-21ksoftirqd/309:39:313
9503993428,4cyclictest41-21ksoftirqd/307:55:403
9503993428,4cyclictest41-21ksoftirqd/307:34:343
9503993428,4cyclictest41-21ksoftirqd/307:13:373
9502993429,3cyclictest33-21ksoftirqd/209:28:292
9502993429,3cyclictest33-21ksoftirqd/207:45:002
9502993428,4cyclictest33-21ksoftirqd/212:28:232
9502993428,4cyclictest33-21ksoftirqd/210:29:242
9502993428,4cyclictest33-21ksoftirqd/210:13:562
9502993428,4cyclictest33-21ksoftirqd/209:59:392
9502993428,4cyclictest33-21ksoftirqd/209:05:112
9502993428,4cyclictest33-21ksoftirqd/208:06:222
9502993427,5cyclictest33-21ksoftirqd/212:01:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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