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2026-08-07 - 19:33
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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 Fri Aug 07, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591207173,23phc2sys0-21swapper/307:09:453
290522204170,23sleep10-21swapper/107:06:341
289702202169,22sleep20-21swapper/207:05:312
291352200166,22sleep00-21swapper/007:07:380
138491810,1ptp4l16445-21sed09:55:263
138491760,1ptp4l391rcuc/310:35:233
138491510,1ptp4l401ktimersoftd/307:54:153
2961999491,46cyclictest0-21swapper/209:40:232
29620994843,3cyclictest12113-21apt09:50:003
2961999440,2cyclictest0-21swapper/208:00:232
2961999440,2cyclictest0-21swapper/208:00:232
29620994338,3cyclictest22671-21fschecks_count08:00:143
29620994338,3cyclictest22671-21fschecks_count08:00:143
138491420,0ptp4l401ktimersoftd/312:36:123
138491420,0ptp4l401ktimersoftd/310:54:033
138491410,0ptp4l401ktimersoftd/308:29:173
138491410,0ptp4l401ktimersoftd/307:17:243
29620994025,13cyclictest41-21ksoftirqd/311:55:003
29617994033,4cyclictest23324-21irqrtprio11:15:180
138491400,1ptp4l0-21swapper/309:35:313
29619993935,2cyclictest7326-21dump-pmu-power10:45:012
138491390,1ptp4l391rcuc/309:10:233
50798380,2rtkit-daemon506-21rtkit-daemon11:03:130
29619993830,5cyclictest33-21ksoftirqd/211:23:452
2961999380,37cyclictest0-21swapper/209:55:232
2961999380,36cyclictest0-21swapper/209:09:442
29617993833,3cyclictest9-21ksoftirqd/008:40:000
29620993731,4cyclictest41-21ksoftirqd/312:10:083
29620993731,4cyclictest41-21ksoftirqd/312:10:083
29620993731,4cyclictest41-21ksoftirqd/310:16:033
29619993731,4cyclictest33-21ksoftirqd/211:16:202
29619993731,4cyclictest33-21ksoftirqd/210:23:442
29619993731,4cyclictest33-21ksoftirqd/210:23:442
29619993731,4cyclictest33-21ksoftirqd/210:13:452
2961899379,26cyclictest0-21swapper/107:56:531
29618993731,4cyclictest25-21ksoftirqd/112:05:371
29618993731,4cyclictest25-21ksoftirqd/111:07:411
29618993731,4cyclictest25-21ksoftirqd/109:16:041
29617993732,3cyclictest9-21ksoftirqd/010:50:000
138491370,1ptp4l0-21swapper/311:11:233
29620993630,4cyclictest41-21ksoftirqd/310:47:523
29620993630,4cyclictest41-21ksoftirqd/310:23:333
29620993630,4cyclictest41-21ksoftirqd/310:23:333
29620993630,4cyclictest41-21ksoftirqd/308:41:073
29619993630,4cyclictest36092irq/128-enp1s0-12:22:572
29619993630,4cyclictest33-21ksoftirqd/212:27:532
29619993630,4cyclictest33-21ksoftirqd/212:18:372
29619993630,4cyclictest33-21ksoftirqd/210:59:272
29619993630,4cyclictest33-21ksoftirqd/210:50:322
29619993630,4cyclictest33-21ksoftirqd/210:07:442
29619993630,4cyclictest33-21ksoftirqd/207:25:412
29618993630,4cyclictest25-21ksoftirqd/112:20:331
29618993630,4cyclictest25-21ksoftirqd/111:49:231
29618993630,4cyclictest25-21ksoftirqd/108:03:551
29618993630,4cyclictest25-21ksoftirqd/108:03:551
29617993632,3cyclictest9-21ksoftirqd/012:00:000
29617993630,4cyclictest9-21ksoftirqd/007:17:480
29617993629,4cyclictest9-21ksoftirqd/012:15:100
29620993529,4cyclictest41-21ksoftirqd/312:02:183
29620993529,4cyclictest41-21ksoftirqd/309:50:443
29620993529,4cyclictest41-21ksoftirqd/308:59:093
29620993529,4cyclictest41-21ksoftirqd/307:12:093
29619993531,2cyclictest17323-21latency_hist08:55:002
29619993530,3cyclictest33-21ksoftirqd/211:35:072
29619993529,4cyclictest33-21ksoftirqd/212:10:122
29619993529,4cyclictest33-21ksoftirqd/212:10:122
29619993529,4cyclictest33-21ksoftirqd/210:31:022
29619993529,4cyclictest33-21ksoftirqd/209:36:232
29619993529,4cyclictest33-21ksoftirqd/208:57:032
29619993529,4cyclictest33-21ksoftirqd/207:14:252
2961999350,1cyclictest0-21swapper/211:54:032
29618993530,3cyclictest25-21ksoftirqd/110:57:451
29618993529,4cyclictest25-21ksoftirqd/112:31:331
29618993529,4cyclictest25-21ksoftirqd/111:38:411
29618993529,4cyclictest25-21ksoftirqd/107:54:091
29618993528,4cyclictest25-21ksoftirqd/109:57:281
29618993528,4cyclictest25-21ksoftirqd/108:55:051
29617993530,3cyclictest9-21ksoftirqd/007:50:000
29617993529,4cyclictest9-21ksoftirqd/011:45:000
29617993529,4cyclictest9-21ksoftirqd/011:45:000
29617993529,4cyclictest9-21ksoftirqd/011:21:410
29617993529,4cyclictest9-21ksoftirqd/009:17:590
29617993529,4cyclictest9-21ksoftirqd/007:21:410
29617993528,5cyclictest9-21ksoftirqd/008:24:440
29617993527,5cyclictest9-21ksoftirqd/009:03:110
138491350,0ptp4l401ktimersoftd/307:40:193
29620993429,3cyclictest41-21ksoftirqd/311:27:203
29620993428,4cyclictest41-21ksoftirqd/311:56:483
29620993428,4cyclictest41-21ksoftirqd/311:49:053
29620993428,4cyclictest41-21ksoftirqd/311:32:503
29620993428,4cyclictest41-21ksoftirqd/311:22:563
29620993428,4cyclictest41-21ksoftirqd/311:04:413
29620993428,4cyclictest41-21ksoftirqd/308:45:093
29620993427,4cyclictest41-21ksoftirqd/309:15:103
29619993430,3cyclictest33-21ksoftirqd/211:03:402
29619993428,4cyclictest33-21ksoftirqd/211:31:432
29619993428,4cyclictest33-21ksoftirqd/210:47:232
29619993428,4cyclictest33-21ksoftirqd/209:30:292
29619993428,4cyclictest33-21ksoftirqd/209:20:002
29619993428,4cyclictest33-21ksoftirqd/208:25:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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