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2026-05-14 - 17:29
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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 Thu May 14, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591227199,19phc2sys0-21swapper/307:08:593
43932200166,22sleep10-21swapper/107:09:151
44192199167,21sleep20-21swapper/207:09:362
42062197163,22sleep00-21swapper/007:06:490
269742710,6sleep0474599cyclictest07:55:110
474599668,24cyclictest8208-21latency11:35:180
233312660,5sleep09-21ksoftirqd/012:05:190
202972620,1sleep10-21swapper/108:45:171
138491620,1ptp4l401ktimersoftd/307:55:133
74242580,2sleep20-21swapper/211:35:122
135191580,6getstats474899cyclictest07:10:223
138491550,1ptp4l401ktimersoftd/308:52:413
4746994631,13cyclictest25-21ksoftirqd/111:25:121
4746994616,28cyclictest0-21swapper/109:40:241
474599466,28cyclictest3907-21seq08:10:500
4747994510,6cyclictest33-21ksoftirqd/210:45:182
4747994337,3cyclictest33-21ksoftirqd/209:20:012
4745994228,4cyclictest9-21ksoftirqd/009:40:200
138491420,0ptp4l401ktimersoftd/311:15:003
138491420,0ptp4l401ktimersoftd/309:08:163
4747994135,4cyclictest33-21ksoftirqd/209:26:472
138491410,0ptp4l401ktimersoftd/310:40:163
138491410,0ptp4l401ktimersoftd/307:26:383
4747994029,9cyclictest33-21ksoftirqd/211:50:122
4747994028,10cyclictest33-21ksoftirqd/207:35:252
474799397,4cyclictest33-21ksoftirqd/207:10:202
4747993935,2cyclictest33-21ksoftirqd/208:45:012
4747993934,3cyclictest33-21ksoftirqd/212:15:012
4747993934,3cyclictest33-21ksoftirqd/207:55:012
4747993933,3cyclictest33-21ksoftirqd/210:40:012
4747993933,3cyclictest33-21ksoftirqd/210:40:012
4747993928,9cyclictest33-21ksoftirqd/207:40:272
4747993927,10cyclictest33-21ksoftirqd/211:00:262
4746993910,4cyclictest5864-21needreboot12:35:221
4748993832,4cyclictest41-21ksoftirqd/309:01:053
4747993834,2cyclictest33-21ksoftirqd/210:55:002
4747993832,4cyclictest33-21ksoftirqd/211:29:142
4747993831,2cyclictest33-21ksoftirqd/208:15:242
50798370,5rtkit-daemon1-21systemd10:05:223
4747993734,2cyclictest33-21ksoftirqd/211:10:012
4747993732,3cyclictest33-21ksoftirqd/210:10:132
4747993732,3cyclictest33-21ksoftirqd/209:00:012
4747993732,3cyclictest33-21ksoftirqd/207:30:182
4747993732,3cyclictest24203-21cron08:54:592
4747993731,4cyclictest33-21ksoftirqd/211:18:592
4747993731,4cyclictest33-21ksoftirqd/210:02:182
4747993731,3cyclictest33-21ksoftirqd/211:45:162
4747993731,3cyclictest33-21ksoftirqd/208:45:182
4747993730,4cyclictest33-21ksoftirqd/212:20:052
4747993730,4cyclictest33-21ksoftirqd/211:10:102
4747993726,9cyclictest33-21ksoftirqd/210:25:222
4747993725,10cyclictest33-21ksoftirqd/208:00:152
4746993731,4cyclictest25-21ksoftirqd/109:15:461
4746993731,4cyclictest25-21ksoftirqd/107:37:591
4746993730,5cyclictest25-21ksoftirqd/108:19:471
474599370,4cyclictest31692-21taskset09:08:340
1385913731,3phc2sys41-21ksoftirqd/311:55:133
138491370,8ptp4l401ktimersoftd/311:01:003
4748993630,4cyclictest41-21ksoftirqd/312:37:593
4748993630,4cyclictest41-21ksoftirqd/312:19:183
4748993630,4cyclictest41-21ksoftirqd/308:21:013
474799364,3cyclictest121rcu_preempt07:25:182
4747993632,2cyclictest33-21ksoftirqd/209:45:002
4747993631,3cyclictest33-21ksoftirqd/211:58:302
4747993631,3cyclictest33-21ksoftirqd/209:35:002
4747993630,4cyclictest33-21ksoftirqd/208:12:212
4747993630,4cyclictest33-21ksoftirqd/207:19:142
4747993625,10cyclictest33-21ksoftirqd/210:20:272
4746993631,3cyclictest21821-21cron07:45:001
4746993630,4cyclictest25-21ksoftirqd/110:27:191
4746993630,4cyclictest25-21ksoftirqd/109:35:571
474699361,32cyclictest2022-21cron10:20:001
474599369,22cyclictest1303-21runrttasks11:31:410
4745993630,4cyclictest9-21ksoftirqd/011:58:450
4745993630,4cyclictest9-21ksoftirqd/011:06:550
4745993630,4cyclictest9-21ksoftirqd/009:15:460
4745993630,4cyclictest9-21ksoftirqd/008:54:160
4745993630,4cyclictest9-21ksoftirqd/007:48:210
4745993630,4cyclictest9-21ksoftirqd/007:27:350
4745993613,20cyclictest9438-21sed09:30:010
474599360,4cyclictest2980-21iostat11:25:160
4748993530,3cyclictest41-21ksoftirqd/311:05:103
4748993530,3cyclictest41-21ksoftirqd/308:28:553
4748993529,4cyclictest41-21ksoftirqd/311:37:103
4748993529,4cyclictest41-21ksoftirqd/310:50:453
4748993529,4cyclictest41-21ksoftirqd/310:46:003
4748993529,4cyclictest41-21ksoftirqd/310:21:443
4748993529,4cyclictest41-21ksoftirqd/309:45:413
4748993529,4cyclictest41-21ksoftirqd/308:49:043
4748993529,4cyclictest41-21ksoftirqd/308:01:033
4748993529,4cyclictest41-21ksoftirqd/307:30:473
474799358,2cyclictest33-21ksoftirqd/212:40:002
4747993531,3cyclictest33-21ksoftirqd/212:25:112
4747993531,3cyclictest33-21ksoftirqd/212:20:012
4747993531,3cyclictest33-21ksoftirqd/208:55:132
4747993531,2cyclictest33-21ksoftirqd/210:55:192
4747993531,2cyclictest33-21ksoftirqd/210:30:322
4747993530,3cyclictest33-21ksoftirqd/211:31:512
4747993530,3cyclictest33-21ksoftirqd/209:20:262
4747993530,3cyclictest33-21ksoftirqd/208:30:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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