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2026-08-01 - 17:59
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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 Aug 01, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325942213164,37sleep10-21swapper/107:09:591
323202204168,25sleep20-21swapper/207:06:262
325602200167,21sleep00-21swapper/007:09:330
138591200166,22phc2sys0-21swapper/307:06:163
2254721500,5sleep250399cyclictest07:55:012
3123421400,5sleep050199cyclictest09:15:210
503995712,8cyclictest33-21ksoftirqd/209:20:002
503995624,4cyclictest33-21ksoftirqd/208:25:192
1385915537,11phc2sys0-21swapper/307:10:013
503995022,6cyclictest33-21ksoftirqd/210:35:002
503995021,4cyclictest33-21ksoftirqd/210:10:252
503995021,4cyclictest33-21ksoftirqd/209:05:162
503994921,6cyclictest33-21ksoftirqd/209:50:192
501994930,3cyclictest9-21ksoftirqd/008:38:580
503994821,7cyclictest33-21ksoftirqd/209:05:012
503994818,4cyclictest33-21ksoftirqd/212:15:202
503994814,6cyclictest33-21ksoftirqd/209:14:592
503994727,3cyclictest33-21ksoftirqd/212:20:192
503994722,7cyclictest33-21ksoftirqd/211:55:202
503994717,3cyclictest33-21ksoftirqd/208:15:162
503994639,4cyclictest30134-21turbostat.cron08:10:012
503994630,13cyclictest33-21ksoftirqd/212:00:132
503994618,4cyclictest33-21ksoftirqd/210:15:182
503994618,3cyclictest33-21ksoftirqd/211:15:142
503994617,4cyclictest33-21ksoftirqd/209:35:132
503994616,3cyclictest33-21ksoftirqd/208:50:142
503994615,4cyclictest33-21ksoftirqd/211:10:162
503994614,6cyclictest33-21ksoftirqd/208:45:162
503994614,3cyclictest33-21ksoftirqd/211:45:012
503994612,3cyclictest121rcu_preempt09:20:212
501994628,3cyclictest9-21ksoftirqd/008:20:580
503994539,3cyclictest33-21ksoftirqd/210:55:002
503994520,6cyclictest33-21ksoftirqd/209:25:192
503994520,6cyclictest33-21ksoftirqd/209:25:192
503994519,3cyclictest33-21ksoftirqd/209:45:002
503994516,4cyclictest33-21ksoftirqd/211:35:142
503994511,4cyclictest33-21ksoftirqd/207:40:302
50399449,4cyclictest33-21ksoftirqd/211:00:012
503994432,3cyclictest33-21ksoftirqd/209:45:272
503994414,4cyclictest33-21ksoftirqd/211:30:182
503994413,4cyclictest33-21ksoftirqd/208:20:202
138491440,0ptp4l401ktimersoftd/310:59:023
50399439,3cyclictest33-21ksoftirqd/207:35:262
50399433,7cyclictest33-21ksoftirqd/212:25:242
503994318,6cyclictest33-21ksoftirqd/211:50:002
503994317,6cyclictest33-21ksoftirqd/211:05:272
503994316,4cyclictest33-21ksoftirqd/211:00:142
503994314,10cyclictest33-21ksoftirqd/208:30:192
503994312,3cyclictest33-21ksoftirqd/209:55:302
138491430,0ptp4l401ktimersoftd/309:50:293
138491430,0ptp4l401ktimersoftd/307:50:203
50499424,35cyclictest27662-21latency_hist11:20:003
504994235,4cyclictest41-21ksoftirqd/308:00:003
504994235,4cyclictest41-21ksoftirqd/308:00:003
503994215,7cyclictest33-21ksoftirqd/211:25:142
503994212,3cyclictest33-21ksoftirqd/210:40:012
503994210,3cyclictest33-21ksoftirqd/210:05:012
138491420,0ptp4l401ktimersoftd/307:25:283
134991420,1getstats0-21swapper/310:09:073
50399417,4cyclictest33-21ksoftirqd/212:35:002
138491410,0ptp4l401ktimersoftd/310:03:593
503994035,3cyclictest33-21ksoftirqd/208:00:012
503994035,3cyclictest33-21ksoftirqd/208:00:012
503994024,9cyclictest33-21ksoftirqd/210:30:002
50399401,2cyclictest33-21ksoftirqd/207:30:142
503994010,3cyclictest33-21ksoftirqd/212:10:292
503994010,3cyclictest33-21ksoftirqd/212:10:292
50399400,2cyclictest121rcu_preempt07:47:342
50399400,2cyclictest121rcu_preempt07:20:172
502994035,3cyclictest25-21ksoftirqd/109:20:001
138491400,0ptp4l401ktimersoftd/312:20:173
138491400,0ptp4l401ktimersoftd/308:50:153
50499393,34cyclictest2727-21awk09:25:013
503993934,3cyclictest33-21ksoftirqd/208:05:002
503993933,3cyclictest33-21ksoftirqd/209:00:012
503993933,3cyclictest33-21ksoftirqd/209:00:012
503993912,4cyclictest33-21ksoftirqd/210:20:212
504993820,15cyclictest41-21ksoftirqd/312:30:213
50399388,6cyclictest33-21ksoftirqd/210:40:142
503993833,3cyclictest33-21ksoftirqd/212:35:192
503993833,3cyclictest33-21ksoftirqd/211:50:182
503993833,3cyclictest33-21ksoftirqd/207:19:592
503993831,4cyclictest33-21ksoftirqd/212:05:162
503993814,7cyclictest33-21ksoftirqd/211:20:182
502993833,3cyclictest25-21ksoftirqd/108:00:001
502993833,3cyclictest25-21ksoftirqd/108:00:001
134991380,3getstats32654-21apache209:04:073
504993730,4cyclictest41-21ksoftirqd/308:29:123
504993713,21cyclictest27609-21/usr/sbin/munin09:10:233
504993711,23cyclictest30358-21/usr/sbin/munin08:10:183
50399378,6cyclictest33-21ksoftirqd/207:10:202
50399375,2cyclictest121rcu_preempt09:30:182
50399375,11cyclictest33-21ksoftirqd/210:45:272
503993733,2cyclictest33-21ksoftirqd/208:10:142
503993732,3cyclictest33-21ksoftirqd/210:05:002
502993732,3cyclictest25-21ksoftirqd/111:30:001
501993730,4cyclictest9-21ksoftirqd/008:49:330
50798360,1rtkit-daemon506-21rtkit-daemon11:22:070
504993631,3cyclictest41-21ksoftirqd/307:40:043
504993630,4cyclictest41-21ksoftirqd/310:32:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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