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2026-05-14 - 19:13
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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 792 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
4747993530,3cyclictest33-21ksoftirqd/207:55:012
4747993529,4cyclictest33-21ksoftirqd/211:21:282
4746993530,3cyclictest29427-21turbostat.cron11:15:001
4746993529,4cyclictest25-21ksoftirqd/109:51:411
4746993529,4cyclictest25-21ksoftirqd/108:03:211
4746993529,4cyclictest25-21ksoftirqd/107:17:251
4746993528,5cyclictest25-21ksoftirqd/107:30:281
4745993530,3cyclictest9-21ksoftirqd/012:37:580
4745993529,4cyclictest9-21ksoftirqd/012:02:460
4745993529,4cyclictest9-21ksoftirqd/011:22:420
4745993529,4cyclictest9-21ksoftirqd/010:49:040
4745993529,4cyclictest9-21ksoftirqd/010:35:090
4745993529,4cyclictest9-21ksoftirqd/010:35:090
4745993529,4cyclictest9-21ksoftirqd/010:03:560
4745993529,4cyclictest9-21ksoftirqd/009:58:150
4745993529,4cyclictest9-21ksoftirqd/007:50:570
474599351,4cyclictest3926-21grep10:20:250
4748993430,2cyclictest41-21ksoftirqd/309:59:593
4748993429,3cyclictest41-21ksoftirqd/311:41:323
4748993428,4cyclictest41-21ksoftirqd/312:33:513
474799346,6cyclictest33-21ksoftirqd/211:40:192
474799345,6cyclictest121rcu_preempt10:15:232
474799344,7cyclictest33-21ksoftirqd/208:05:162
4747993430,2cyclictest33-21ksoftirqd/210:05:112
4747993430,2cyclictest33-21ksoftirqd/209:50:122
4747993429,3cyclictest33-21ksoftirqd/209:40:002
4747993429,3cyclictest33-21ksoftirqd/209:05:132
4747993429,3cyclictest33-21ksoftirqd/208:30:212
4747993428,4cyclictest33-21ksoftirqd/207:24:202
4747993428,4cyclictest33-21ksoftirqd/207:24:202
474799342,2cyclictest33-21ksoftirqd/208:20:132
474799341,3cyclictest121rcu_preempt09:10:462
474799340,10cyclictest121rcu_preempt09:55:142
4746993429,3cyclictest25-21ksoftirqd/108:25:111
4746993428,4cyclictest25-21ksoftirqd/112:11:461
4746993428,4cyclictest25-21ksoftirqd/110:45:171
4746993428,4cyclictest25-21ksoftirqd/110:05:421
4746993428,4cyclictest25-21ksoftirqd/109:45:311
4746993428,4cyclictest25-21ksoftirqd/108:21:071
4746993428,4cyclictest25-21ksoftirqd/107:50:101
4746993418,4cyclictest31646-21kworker/1:112:05:041
474599348,23cyclictest18465-21timerandwakeup08:40:260
4745993429,3cyclictest9-21ksoftirqd/012:21:410
4745993429,3cyclictest9-21ksoftirqd/011:41:000
4745993428,4cyclictest9-21ksoftirqd/012:13:300
474599340,4cyclictest6856-21seq09:24:570
474599340,4cyclictest29471-21cat11:15:010
474599340,3cyclictest30399-21/usr/sbin/munin10:10:160
138491340,0ptp4l401ktimersoftd/308:10:243
4748993328,3cyclictest41-21ksoftirqd/312:05:023
4748993328,3cyclictest41-21ksoftirqd/310:18:303
4748993327,4cyclictest41-21ksoftirqd/312:14:043
4748993327,4cyclictest41-21ksoftirqd/310:31:183
4748993326,5cyclictest41-21ksoftirqd/309:50:253
4747993329,3cyclictest33-21ksoftirqd/209:45:142
4747993329,2cyclictest33-21ksoftirqd/212:00:152
4747993329,2cyclictest33-21ksoftirqd/208:35:142
4747993328,3cyclictest33-21ksoftirqd/212:05:152
474799330,4cyclictest33-21ksoftirqd/212:35:002
4746993328,3cyclictest25-21ksoftirqd/112:32:541
4746993328,3cyclictest25-21ksoftirqd/109:25:321
4746993327,4cyclictest25-21ksoftirqd/111:57:021
4746993327,4cyclictest25-21ksoftirqd/109:01:031
4746993327,4cyclictest25-21ksoftirqd/107:27:441
474599338,22cyclictest16296-21cat07:30:250
474599338,21cyclictest5227-21irqrtprio08:15:160
4745993330,2cyclictest0-21swapper/007:10:010
4745993328,3cyclictest9-21ksoftirqd/007:40:100
4745993327,4cyclictest9-21ksoftirqd/012:30:340
4745993327,4cyclictest9-21ksoftirqd/008:59:240
4745993327,4cyclictest9-21ksoftirqd/008:48:420
4745993327,4cyclictest9-21ksoftirqd/008:01:410
474599330,4cyclictest9672-21cat10:35:010
474599330,4cyclictest323-21iostat12:25:160
474599330,4cyclictest14559-21date10:45:000
474599330,4cyclictest0-21swapper/011:20:000
474599330,4cyclictest0-21swapper/009:35:000
474599330,3cyclictest14228-21cron09:40:000
4748993227,3cyclictest41-21ksoftirqd/310:35:123
4748993227,3cyclictest41-21ksoftirqd/310:35:123
4748993226,4cyclictest41-21ksoftirqd/312:26:213
4748993226,4cyclictest41-21ksoftirqd/311:21:533
4748993226,4cyclictest41-21ksoftirqd/309:42:373
4748993226,4cyclictest41-21ksoftirqd/309:26:043
4748993226,4cyclictest41-21ksoftirqd/307:44:313
4748993226,4cyclictest41-21ksoftirqd/307:16:503
4747993228,2cyclictest33-21ksoftirqd/207:45:112
4747993226,4cyclictest33-21ksoftirqd/210:42:332
474699329,4cyclictest2727-21sed10:20:151
474699329,3cyclictest1900-21idleruntime-cro12:30:001
474699323,7cyclictest145742chrt11:50:121
4746993227,3cyclictest25-21ksoftirqd/111:03:301
4746993227,3cyclictest25-21ksoftirqd/108:00:001
4746993226,4cyclictest25-21ksoftirqd/112:20:581
4746993226,4cyclictest25-21ksoftirqd/111:43:141
4746993226,4cyclictest25-21ksoftirqd/111:37:001
4746993226,4cyclictest25-21ksoftirqd/111:17:021
4746993226,4cyclictest25-21ksoftirqd/110:30:041
4746993226,4cyclictest25-21ksoftirqd/109:05:481
4746993226,4cyclictest25-21ksoftirqd/108:06:031
4746993211,3cyclictest4771-21cat07:10:111
4745993226,4cyclictest9-21ksoftirqd/011:49:060
4745993211,18cyclictest18111-21if_enp4s009:45:180
4745993210,20cyclictest32200-21cpuspeed_turbos09:10:140
4745993210,20cyclictest1303-21runrttasks12:18:010
474599320,4cyclictest27748-21diskstats10:05:120
474599320,4cyclictest23192-21memory11:00:200
138491320,9ptp4l401ktimersoftd/312:20:213
138491320,0ptp4l401ktimersoftd/308:44:543
4748993127,2cyclictest223-21systemd-journal08:59:553
4748993126,3cyclictest41-21ksoftirqd/311:53:353
4748993125,4cyclictest41-21ksoftirqd/311:49:223
4748993125,4cyclictest41-21ksoftirqd/311:19:203
4748993125,4cyclictest41-21ksoftirqd/310:01:423
4748993125,4cyclictest41-21ksoftirqd/309:12:553
4748993125,4cyclictest41-21ksoftirqd/308:34:203
4748993125,4cyclictest41-21ksoftirqd/307:35:563
474699319,4cyclictest19387-21wc10:55:011
4746993126,3cyclictest25-21ksoftirqd/111:21:031
4746993126,3cyclictest25-21ksoftirqd/110:43:161
4746993125,4cyclictest25-21ksoftirqd/112:15:431
4746993125,4cyclictest25-21ksoftirqd/111:05:501
4746993125,4cyclictest25-21ksoftirqd/110:12:081
4746993125,4cyclictest25-21ksoftirqd/108:52:121
4746993125,4cyclictest25-21ksoftirqd/108:32:051
4746993110,3cyclictest1948-21ls09:15:001
474599319,19cyclictest16999-21latency_hist11:55:000
474599317,21cyclictest32136-21cat08:05:130
4745993125,4cyclictest9-21ksoftirqd/009:52:410
474599310,3cyclictest5384-21hddtemp_smartct10:25:160
474599310,2cyclictest0-21swapper/007:20:170
474599310,2cyclictest0-21swapper/007:20:170
138491310,0ptp4l401ktimersoftd/311:33:253
4748993025,3cyclictest41-21ksoftirqd/309:39:543
4748993025,3cyclictest41-21ksoftirqd/308:07:473
4748993025,3cyclictest41-21ksoftirqd/307:48:333
4748993024,4cyclictest41-21ksoftirqd/307:24:053
4748993024,4cyclictest41-21ksoftirqd/307:24:043
474699309,3cyclictest19547-21/usr/sbin/munin12:00:211
474699302,5cyclictest0-21swapper/108:35:101
4746993025,3cyclictest25-21ksoftirqd/109:57:011
4746993025,3cyclictest25-21ksoftirqd/109:20:201
4746993025,3cyclictest25-21ksoftirqd/108:40:041
4746993025,3cyclictest25-21ksoftirqd/107:47:121
474699301,7cyclictest24454-21apt-get08:55:121
4746993011,3cyclictest12839-21iostat_ios11:45:191
474599309,19cyclictest13232-21processes08:30:220
474599308,20cyclictest16682-21cat08:40:000
4745993025,3cyclictest9-21ksoftirqd/007:15:110
4745993011,17cyclictest1303-21runrttasks08:23:080
4745993010,17cyclictest19822-21cstates10:55:140
138491300,0ptp4l401ktimersoftd/312:00:223
138491300,0ptp4l401ktimersoftd/310:11:123
4748992924,3cyclictest62050irq/143-enp4s0-10:28:123
4748992924,3cyclictest41-21ksoftirqd/309:32:393
4748992924,3cyclictest41-21ksoftirqd/309:16:013
4748992924,3cyclictest41-21ksoftirqd/308:37:133
4748992924,3cyclictest41-21ksoftirqd/308:15:463
4748992923,4cyclictest41-21ksoftirqd/309:22:543
4748992923,4cyclictest41-21ksoftirqd/307:50:313
4746992923,4cyclictest25-21ksoftirqd/109:31:001
4746992910,4cyclictest11048-21processes07:20:211
4746992910,4cyclictest11048-21processes07:20:201
474599297,19cyclictest17876-21irqrtprio07:35:170
474599296,4cyclictest223-21systemd-journal08:27:530
474599292,3cyclictest0-21swapper/010:55:000
474599291,3cyclictest2076-21tr10:19:590
4748992823,3cyclictest41-21ksoftirqd/310:59:593
474599285,20cyclictest0-21swapper/009:00:270
4746992722,3cyclictest25-21ksoftirqd/110:02:431
4746992710,3cyclictest1303-21runrttasks08:14:211
4746992621,3cyclictest25-21ksoftirqd/110:37:381
4746992621,3cyclictest25-21ksoftirqd/110:37:381
4746992620,4cyclictest25-21ksoftirqd/110:55:321
138491250,0ptp4l401ktimersoftd/311:25:103
4746992216,4cyclictest25-21ksoftirqd/111:33:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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