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2026-04-27 - 16:57
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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 Mon Apr 27, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163582205170,23sleep10-21swapper/107:07:541
142542203169,23sleep30-21swapper/307:05:073
163272201168,21sleep20-21swapper/207:07:322
162332199166,22sleep00-21swapper/007:06:180
686221690,6sleep31682099cyclictest07:55:153
1385919066,13phc2sys0-21swapper/307:10:003
138491720,1ptp4l391rcuc/310:55:413
138491700,1ptp4l401ktimersoftd/308:17:393
138491660,1ptp4l401ktimersoftd/311:42:043
138491610,1ptp4l401ktimersoftd/311:15:253
138491550,1ptp4l401ktimersoftd/309:58:193
66552540,6sleep11681899cyclictest07:55:131
196692510,3sleep219650-21fschecks_count09:25:162
16472450,1sleep01649-21latency_hist07:45:010
138491440,0ptp4l401ktimersoftd/308:30:053
138491430,0ptp4l401ktimersoftd/309:10:053
138491430,0ptp4l401ktimersoftd/308:37:113
138491420,0ptp4l401ktimersoftd/312:05:373
138491420,0ptp4l401ktimersoftd/311:23:373
138491400,0ptp4l401ktimersoftd/308:00:283
16819993933,4cyclictest33-21ksoftirqd/211:14:312
16819993831,4cyclictest33-21ksoftirqd/210:41:302
16819993831,4cyclictest33-21ksoftirqd/210:41:292
16818993833,3cyclictest25-21ksoftirqd/107:25:011
16817993833,3cyclictest9-21ksoftirqd/011:50:000
16817993833,3cyclictest9-21ksoftirqd/011:50:000
138491380,0ptp4l401ktimersoftd/310:50:003
16820993731,4cyclictest41-21ksoftirqd/312:15:053
16820993731,4cyclictest41-21ksoftirqd/312:15:053
16820993730,5cyclictest41-21ksoftirqd/310:23:293
16818993733,2cyclictest25-21ksoftirqd/108:25:001
16818993732,3cyclictest25-21ksoftirqd/109:40:011
16817993730,4cyclictest9-21ksoftirqd/011:44:090
16820993631,3cyclictest41-21ksoftirqd/308:26:363
16820993630,4cyclictest41-21ksoftirqd/311:53:473
16820993630,4cyclictest41-21ksoftirqd/307:38:213
16819993631,3cyclictest33-21ksoftirqd/208:35:142
16819993630,4cyclictest33-21ksoftirqd/211:49:092
16819993630,4cyclictest33-21ksoftirqd/211:49:092
16819993630,4cyclictest33-21ksoftirqd/211:31:242
16819993630,4cyclictest33-21ksoftirqd/210:30:062
16819993630,4cyclictest33-21ksoftirqd/208:12:422
16818993631,3cyclictest25-21ksoftirqd/110:45:001
16818993631,3cyclictest25-21ksoftirqd/110:45:001
16818993631,3cyclictest25-21ksoftirqd/110:30:571
16818993631,3cyclictest25-21ksoftirqd/109:20:011
16818993630,4cyclictest25-21ksoftirqd/111:26:491
16818993630,4cyclictest25-21ksoftirqd/108:05:001
16817993630,4cyclictest9-21ksoftirqd/009:36:360
16817993630,3cyclictest9-21ksoftirqd/008:37:590
1681799361,32cyclictest6132-21grep12:10:270
1681799360,33cyclictest11194-21sshd12:21:230
50798350,4rtkit-daemon1522-21apache211:48:211
50798350,4rtkit-daemon1522-21apache211:48:211
16820993530,3cyclictest41-21ksoftirqd/308:14:243
16820993529,4cyclictest41-21ksoftirqd/309:45:463
16820993529,4cyclictest41-21ksoftirqd/308:49:023
16819993530,3cyclictest33-21ksoftirqd/211:27:372
16819993530,3cyclictest33-21ksoftirqd/209:59:092
16819993529,4cyclictest33-21ksoftirqd/211:43:512
16819993529,4cyclictest33-21ksoftirqd/211:21:412
16819993529,4cyclictest33-21ksoftirqd/211:04:202
16819993529,4cyclictest33-21ksoftirqd/210:53:302
16819993529,4cyclictest33-21ksoftirqd/210:14:572
16819993529,4cyclictest33-21ksoftirqd/209:47:412
16819993529,4cyclictest33-21ksoftirqd/208:25:012
16819993529,3cyclictest33-21ksoftirqd/208:50:132
16819993528,5cyclictest33-21ksoftirqd/212:25:292
16818993531,2cyclictest25-21ksoftirqd/107:35:191
16818993530,3cyclictest25-21ksoftirqd/108:40:191
16818993530,3cyclictest25-21ksoftirqd/108:35:101
16818993529,4cyclictest25-21ksoftirqd/111:16:061
16818993529,4cyclictest25-21ksoftirqd/110:53:031
16818993529,4cyclictest25-21ksoftirqd/110:37:001
16818993529,4cyclictest25-21ksoftirqd/110:21:341
16818993529,4cyclictest25-21ksoftirqd/107:19:251
16817993530,3cyclictest9-21ksoftirqd/007:55:110
16817993529,4cyclictest9-21ksoftirqd/011:38:320
16817993529,4cyclictest9-21ksoftirqd/011:27:000
16817993529,4cyclictest9-21ksoftirqd/008:55:360
16817993513,3cyclictest6318-21idleruntime-cro10:05:000
16820993429,3cyclictest41-21ksoftirqd/310:05:003
16820993428,4cyclictest41-21ksoftirqd/311:33:373
16820993428,4cyclictest41-21ksoftirqd/309:50:393
16820993428,4cyclictest41-21ksoftirqd/309:19:063
16819993428,4cyclictest33-21ksoftirqd/212:21:542
16819993428,4cyclictest33-21ksoftirqd/212:09:392
16819993428,4cyclictest33-21ksoftirqd/211:08:172
16819993428,4cyclictest33-21ksoftirqd/210:22:202
16819993428,4cyclictest33-21ksoftirqd/209:44:532
16819993428,4cyclictest33-21ksoftirqd/209:18:332
16819993428,4cyclictest33-21ksoftirqd/209:02:532
16819993428,4cyclictest33-21ksoftirqd/208:40:062
16819993428,4cyclictest33-21ksoftirqd/208:06:212
16819993428,4cyclictest33-21ksoftirqd/207:33:382
16819993427,4cyclictest33-21ksoftirqd/207:41:502
16818993429,3cyclictest25-21ksoftirqd/108:25:011
16818993429,3cyclictest25-21ksoftirqd/108:05:171
16818993429,3cyclictest25-21ksoftirqd/107:25:011
16818993428,4cyclictest25-21ksoftirqd/112:26:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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