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2026-05-10 - 19:16
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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 Sun May 10, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193802220191,19sleep10-21swapper/107:08:581
138591208174,23phc2sys0-21swapper/307:09:533
192432202169,22sleep00-21swapper/007:07:130
192152201168,22sleep20-21swapper/207:06:512
138491760,1ptp4l401ktimersoftd/312:01:173
19760996532,7cyclictest33-21ksoftirqd/212:20:002
325742620,3sleep30-21swapper/311:55:153
138491600,1ptp4l401ktimersoftd/308:26:553
19760995916,8cyclictest33-21ksoftirqd/211:10:172
138491580,1ptp4l401ktimersoftd/309:50:113
19760995724,7cyclictest33-21ksoftirqd/210:45:002
138491570,1ptp4l401ktimersoftd/310:35:153
138491560,1ptp4l401ktimersoftd/312:21:263
138491560,1ptp4l391rcuc/312:30:213
19760995523,5cyclictest33-21ksoftirqd/208:05:132
138491550,1ptp4l401ktimersoftd/308:32:293
138491550,1ptp4l401ktimersoftd/308:10:203
19760995424,4cyclictest33-21ksoftirqd/211:25:142
19760995424,4cyclictest33-21ksoftirqd/209:50:252
19760995424,4cyclictest33-21ksoftirqd/208:10:232
19760995424,3cyclictest33-21ksoftirqd/210:35:212
19760995320,6cyclictest33-21ksoftirqd/210:30:012
299612520,27sleep11975999cyclictest08:35:141
19760995224,7cyclictest33-21ksoftirqd/211:20:202
19760995122,6cyclictest33-21ksoftirqd/212:21:512
19760995122,3cyclictest33-21ksoftirqd/212:10:002
19760995122,3cyclictest33-21ksoftirqd/210:10:162
19760995113,4cyclictest33-21ksoftirqd/207:55:272
285792500,2sleep10-21swapper/110:40:231
19760995023,4cyclictest33-21ksoftirqd/208:15:142
19760995022,5cyclictest33-21ksoftirqd/210:55:232
19760995022,5cyclictest33-21ksoftirqd/210:55:232
19760995021,3cyclictest33-21ksoftirqd/209:30:132
19760995020,4cyclictest33-21ksoftirqd/207:40:122
138491500,1ptp4l401ktimersoftd/307:18:223
19760994920,3cyclictest33-21ksoftirqd/209:44:592
19760994918,4cyclictest33-21ksoftirqd/211:20:012
19760994918,3cyclictest33-21ksoftirqd/211:00:242
19760994917,6cyclictest33-21ksoftirqd/207:20:152
19760994822,7cyclictest33-21ksoftirqd/210:30:172
19760994821,7cyclictest33-21ksoftirqd/209:05:172
19760994818,4cyclictest33-21ksoftirqd/211:30:262
19760994818,4cyclictest33-21ksoftirqd/210:00:192
19760994818,4cyclictest33-21ksoftirqd/208:35:152
19760994815,6cyclictest33-21ksoftirqd/210:00:012
19760994721,7cyclictest33-21ksoftirqd/212:25:142
19760994720,3cyclictest33-21ksoftirqd/208:00:192
19760994717,4cyclictest33-21ksoftirqd/209:15:012
19760994630,4cyclictest33-21ksoftirqd/209:10:162
19760994615,7cyclictest33-21ksoftirqd/208:45:132
19760994614,4cyclictest33-21ksoftirqd/208:30:192
19760994612,8cyclictest33-21ksoftirqd/209:00:212
19759994640,3cyclictest17631-21fschecks_count10:20:141
19760994540,2cyclictest33-21ksoftirqd/208:59:592
19760994518,7cyclictest33-21ksoftirqd/208:40:192
19760994518,7cyclictest33-21ksoftirqd/208:40:182
19760994517,4cyclictest33-21ksoftirqd/210:50:002
19760994516,6cyclictest33-21ksoftirqd/208:50:172
19760994514,6cyclictest33-21ksoftirqd/210:05:132
19760994513,8cyclictest33-21ksoftirqd/207:25:242
19760994513,3cyclictest33-21ksoftirqd/212:35:242
19760994510,6cyclictest33-21ksoftirqd/212:35:002
1975999450,1cyclictest0-21swapper/112:26:431
19761994439,3cyclictest24451-21sh08:25:013
1976099447,6cyclictest33-21ksoftirqd/209:20:262
19760994413,6cyclictest33-21ksoftirqd/211:45:162
19760994410,7cyclictest33-21ksoftirqd/212:10:222
19760994337,3cyclictest33-21ksoftirqd/210:19:592
19760994337,3cyclictest33-21ksoftirqd/207:40:002
19760994337,3cyclictest33-21ksoftirqd/207:40:002
19760994316,4cyclictest33-21ksoftirqd/208:20:112
19760994314,9cyclictest33-21ksoftirqd/207:45:142
138491430,0ptp4l401ktimersoftd/310:57:113
138491430,0ptp4l401ktimersoftd/310:57:113
19760994234,2cyclictest33-21ksoftirqd/210:50:222
19760994229,11cyclictest33-21ksoftirqd/211:05:242
1976099420,3cyclictest33-21ksoftirqd/211:35:232
1976099420,3cyclictest33-21ksoftirqd/211:35:232
138491420,0ptp4l401ktimersoftd/309:30:253
138491420,0ptp4l401ktimersoftd/307:40:263
1976099416,6cyclictest33-21ksoftirqd/209:35:162
1976099411,2cyclictest33-21ksoftirqd/211:40:272
19760994111,9cyclictest33-21ksoftirqd/211:50:232
19758994136,3cyclictest25161-21fschecks_count08:25:160
19761994035,3cyclictest41-21ksoftirqd/307:40:013
19761994035,3cyclictest41-21ksoftirqd/307:40:013
19760994028,4cyclictest33-21ksoftirqd/208:25:252
138491400,1ptp4l401ktimersoftd/312:07:053
138491400,0ptp4l401ktimersoftd/311:39:313
138491400,0ptp4l401ktimersoftd/311:39:313
1976099395,3cyclictest33-21ksoftirqd/207:50:262
19760993933,3cyclictest33-21ksoftirqd/210:24:592
1976099392,3cyclictest121rcu_preempt07:10:172
19760993910,6cyclictest33-21ksoftirqd/207:30:132
19760993910,5cyclictest33-21ksoftirqd/209:45:212
1976099381,2cyclictest121rcu_preempt09:25:122
19758993832,3cyclictest9-21ksoftirqd/008:45:010
19758993832,3cyclictest9-21ksoftirqd/008:45:010
138491380,0ptp4l401ktimersoftd/310:20:203
138491380,0ptp4l401ktimersoftd/309:04:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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