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2026-05-08 - 21:21
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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 all highest latencies:
System rackdslot4.osadl.org (updated Fri May 08, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321352235168,22sleep20-21swapper/207:07:542
319612206171,23sleep30-21swapper/307:05:373
320452200166,22sleep00-21swapper/007:06:440
319642198166,21sleep10-21swapper/107:05:391
32597996813,17cyclictest27549-21cron09:10:001
3259799679,17cyclictest17446-21date07:45:011
3259799659,11cyclictest9195-21cut09:35:181
3259799658,18cyclictest2377-21rt-features10:25:221
32597996510,16cyclictest30375-21latency_hist09:15:001
32597996510,16cyclictest223-21systemd-journal11:10:141
32599996421,6cyclictest41-21ksoftirqd/308:45:123
3259799649,12cyclictest30688-21cstates12:30:121
32597996410,12cyclictest9387-21ps11:45:231
32597996410,10cyclictest32125-21/usr/sbin/munin08:10:261
32599996321,5cyclictest41-21ksoftirqd/312:30:253
32598996325,5cyclictest33-21ksoftirqd/208:19:592
3259799639,18cyclictest20999-21expr11:05:131
3259799639,17cyclictest30797-21cstates11:25:121
32599996220,6cyclictest41-21ksoftirqd/308:05:193
32598996234,7cyclictest33-21ksoftirqd/209:00:012
32598996230,7cyclictest33-21ksoftirqd/209:14:592
32598996226,5cyclictest33-21ksoftirqd/208:50:002
3259799629,16cyclictest8038-21latency_hist09:35:011
3259799629,12cyclictest760-21cat10:25:001
3259799629,12cyclictest202902chrt09:57:571
3259799628,11cyclictest23157-21cat10:05:021
3259799628,10cyclictest8935-21hwlatdetect10:40:161
32599996118,7cyclictest41-21ksoftirqd/311:50:163
32599996118,5cyclictest41-21ksoftirqd/308:35:213
32599996117,6cyclictest41-21ksoftirqd/310:40:133
32599996117,5cyclictest41-21ksoftirqd/308:50:173
32599996114,8cyclictest41-21ksoftirqd/312:25:203
32599996114,7cyclictest41-21ksoftirqd/307:25:233
32598996132,7cyclictest33-21ksoftirqd/209:35:002
3259799619,10cyclictest15678-21latency_hist10:55:011
32597996112,10cyclictest3080-21cstates07:15:121
32597996111,11cyclictest22487-21chrt08:58:201
32597996111,10cyclictest15027-21taskset08:42:501
32597996110,17cyclictest884-21ls11:30:121
32599996027,7cyclictest41-21ksoftirqd/309:50:143
32599996023,8cyclictest41-21ksoftirqd/311:15:183
32599996018,7cyclictest41-21ksoftirqd/307:45:123
32599996017,6cyclictest41-21ksoftirqd/307:55:133
32599996015,7cyclictest41-21ksoftirqd/311:10:133
32599996015,6cyclictest41-21ksoftirqd/310:30:163
32599996015,6cyclictest41-21ksoftirqd/309:35:173
32598996031,4cyclictest33-21ksoftirqd/210:40:232
32598996031,4cyclictest33-21ksoftirqd/209:40:212
3259799609,14cyclictest16527-21irqrtprio09:50:171
3259799609,10cyclictest25462sleep109:21:321
3259799608,11cyclictest25222-21cat12:20:011
3259799608,10cyclictest23220-21irqrtprio07:55:171
32597996012,18cyclictest18561-21/usr/sbin/munin08:50:161
32597996011,17cyclictest10312-21dpkg08:35:111
32597996010,18cyclictest11406-21/usr/sbin/munin09:40:141
32597996010,16cyclictest28380-21cat10:15:111
32597996010,15cyclictest2315-21gnome-shell08:31:591
32597996010,10cyclictest14471-21chrt07:36:011
138491600,48ptp4l0-21swapper/307:10:003
32599995917,7cyclictest41-21ksoftirqd/307:50:233
32599995917,6cyclictest41-21ksoftirqd/309:55:193
32598995928,8cyclictest33-21ksoftirqd/208:50:192
3259799599,17cyclictest7448-21latency_hist07:25:011
3259799599,11cyclictest20301-21cat07:50:111
3259799599,10cyclictest28364-21cstates12:25:131
3259799598,11cyclictest25964-21cstates11:15:131
32597995911,11cyclictest17568-21chrt08:48:571
32597995910,11cyclictest5857-21expr11:40:131
32597995910,10cyclictest50952chrt08:24:271
214142590,1sleep20-21swapper/212:10:172
32599995815,6cyclictest41-21ksoftirqd/309:15:173
32598995830,4cyclictest33-21ksoftirqd/208:40:252
32598995829,7cyclictest33-21ksoftirqd/207:20:012
32598995826,4cyclictest33-21ksoftirqd/210:20:002
32598995824,4cyclictest33-21ksoftirqd/207:15:012
3259799588,19cyclictest12245-21mailstats10:45:231
3259799588,10cyclictest515-21cstates07:10:111
32599995721,4cyclictest41-21ksoftirqd/310:50:003
32599995718,6cyclictest41-21ksoftirqd/310:20:253
32599995716,7cyclictest41-21ksoftirqd/311:05:163
32599995716,5cyclictest41-21ksoftirqd/310:30:003
32599995711,6cyclictest41-21ksoftirqd/312:35:223
32598995729,6cyclictest33-21ksoftirqd/210:30:152
32598995728,7cyclictest33-21ksoftirqd/209:40:012
32598995724,8cyclictest33-21ksoftirqd/209:10:002
32598995722,6cyclictest33-21ksoftirqd/212:15:252
32598995722,4cyclictest33-21ksoftirqd/209:55:252
3259799579,11cyclictest16853-21wc10:55:211
3259799577,10cyclictest2941-21latency_hist12:40:001
32596995721,7cyclictest9-21ksoftirqd/011:43:490
32599995624,4cyclictest41-21ksoftirqd/310:55:193
32599995617,6cyclictest41-21ksoftirqd/307:20:263
32599995616,6cyclictest41-21ksoftirqd/309:40:153
32599995615,6cyclictest41-21ksoftirqd/311:55:223
32599995615,6cyclictest41-21ksoftirqd/311:55:223
32599995614,5cyclictest41-21ksoftirqd/310:35:233
32599995612,6cyclictest41-21ksoftirqd/308:55:153
32598995630,7cyclictest33-21ksoftirqd/212:05:132
32598995630,7cyclictest33-21ksoftirqd/210:50:132
3259799567,9cyclictest0-21swapper/107:30:011
3259799565,9cyclictest0-21swapper/111:35:231
32597995611,11cyclictest27340-21chrt08:04:041
32597995611,11cyclictest24751-21seq09:00:361
3259999554,15cyclictest41-21ksoftirqd/308:25:013
32599995527,3cyclictest41-21ksoftirqd/310:15:213
32599995516,6cyclictest41-21ksoftirqd/307:15:113
32599995515,8cyclictest41-21ksoftirqd/308:10:253
32599995514,5cyclictest41-21ksoftirqd/308:25:243
32599995513,6cyclictest41-21ksoftirqd/309:00:113
32598995525,4cyclictest33-21ksoftirqd/212:25:122
32598995523,7cyclictest33-21ksoftirqd/211:45:002
32598995519,10cyclictest33-21ksoftirqd/210:45:172
32597995510,13cyclictest26062-21iostat_ios12:20:171
32599995414,5cyclictest41-21ksoftirqd/311:40:123
32598995429,3cyclictest33-21ksoftirqd/210:10:172
32598995426,7cyclictest33-21ksoftirqd/211:05:132
32598995423,7cyclictest33-21ksoftirqd/210:25:132
3259799548,16cyclictest20017-21runrttasks12:08:591
32597995411,13cyclictest26148-21df_inode10:10:141
32597995410,13cyclictest29500-21users08:05:261
32597995410,13cyclictest23961-21iostat_ios10:05:191
32597995410,13cyclictest11226-21iostat11:50:191
32599995317,6cyclictest41-21ksoftirqd/310:05:133
32599995313,6cyclictest41-21ksoftirqd/311:45:153
32598995333,3cyclictest33-21ksoftirqd/208:10:132
32598995322,9cyclictest33-21ksoftirqd/207:35:262
32598995322,4cyclictest33-21ksoftirqd/210:55:162
32598995321,4cyclictest33-21ksoftirqd/209:30:002
32598995318,8cyclictest33-21ksoftirqd/211:00:142
3259799538,10cyclictest20722-21df_abs12:10:111
32597995310,13cyclictest31981-21python09:15:251
32597995310,13cyclictest28802-21iostat11:20:171
3259699534,6cyclictest4500-21grep09:25:230
3259699533,7cyclictest5751-21date10:35:010
3259999522,6cyclictest41-21ksoftirqd/311:25:483
32599995219,7cyclictest41-21ksoftirqd/307:35:193
32599995217,6cyclictest41-21ksoftirqd/308:40:013
32599995213,5cyclictest41-21ksoftirqd/308:18:103
32598995223,3cyclictest33-21ksoftirqd/207:50:102
32598995222,9cyclictest33-21ksoftirqd/210:05:192
32598995220,4cyclictest33-21ksoftirqd/208:25:272
32598995218,8cyclictest33-21ksoftirqd/211:45:142
32598995218,4cyclictest33-21ksoftirqd/211:40:012
3259799529,13cyclictest15795-21df12:00:141
3259699528,6cyclictest9-21ksoftirqd/010:00:210
3259699527,5cyclictest9-21ksoftirqd/007:16:150
3259699524,7cyclictest5676-21expr08:25:130
3259699524,6cyclictest379-21sed12:35:000
3259699524,6cyclictest27766-21latency_hist09:10:020
32596995213,5cyclictest9-21ksoftirqd/012:15:180
3259999514,5cyclictest401ktimersoftd/308:30:263
32598995126,4cyclictest33-21ksoftirqd/208:05:132
32598995121,4cyclictest33-21ksoftirqd/211:25:202
32598995116,8cyclictest33-21ksoftirqd/209:25:002
32597995111,10cyclictest12048-21chrt07:31:241
3259699513,7cyclictest598-21sed07:10:130
3259699512,7cyclictest29631-21tr10:15:220
247942510,2sleep20-21swapper/207:59:572
3259999503,5cyclictest41-21ksoftirqd/311:30:243
32599995022,6cyclictest41-21ksoftirqd/310:50:153
3259999500,47cyclictest401ktimersoftd/312:20:153
32598995025,7cyclictest33-21ksoftirqd/211:55:252
32598995025,7cyclictest33-21ksoftirqd/211:55:252
32598995025,7cyclictest33-21ksoftirqd/208:20:122
32598995022,10cyclictest33-21ksoftirqd/211:30:252
32598995021,8cyclictest33-21ksoftirqd/212:20:202
32598995017,9cyclictest33-21ksoftirqd/212:30:132
3259799509,12cyclictest14615-21cat11:55:251
3259799509,12cyclictest14615-21cat11:55:251
3259799509,12cyclictest13795-21df_inode09:45:131
32597995010,11cyclictest18579-21grep07:45:191
3259699503,7cyclictest22722-21sed09:00:010
3259699503,6cyclictest19861-21cat07:50:000
3259699502,6cyclictest9-21ksoftirqd/009:55:220
3259699502,6cyclictest29311-21phc2sys-jitter12:25:220
32599994915,7cyclictest41-21ksoftirqd/309:30:163
3259999490,8cyclictest401ktimersoftd/307:30:253
3259999490,5cyclictest401ktimersoftd/312:05:193
3259999490,5cyclictest401ktimersoftd/309:15:003
32598994926,7cyclictest33-21ksoftirqd/207:45:142
32598994920,8cyclictest33-21ksoftirqd/210:20:182
32598994919,9cyclictest33-21ksoftirqd/209:00:152
32598994919,7cyclictest33-21ksoftirqd/211:55:002
3259699498,5cyclictest9-21ksoftirqd/010:47:590
3259699497,5cyclictest9-21ksoftirqd/008:03:560
32596994945,2cyclictest111rcuc/010:20:250
3259699493,7cyclictest25926-21cstates11:15:120
3259699493,6cyclictest9490-21awk07:25:270
3259699492,6cyclictest575-21cstates08:15:130
3259699491,6cyclictest0-21swapper/010:40:010
3259999485,6cyclictest41-21ksoftirqd/311:35:233
32599994826,7cyclictest41-21ksoftirqd/309:05:243
32599994823,4cyclictest41-21ksoftirqd/307:40:253
32599994820,7cyclictest41-21ksoftirqd/312:15:143
32599994819,6cyclictest41-21ksoftirqd/311:00:123
32599994819,6cyclictest41-21ksoftirqd/310:00:173
3259999480,6cyclictest401ktimersoftd/309:20:293
32598994832,3cyclictest33-21ksoftirqd/208:40:012
3259799488,11cyclictest20559-21cut11:05:011
3259799488,10cyclictest3299-21cstates09:25:141
3259799487,9cyclictest0-21swapper/110:30:131
3259699486,5cyclictest9-21ksoftirqd/008:05:210
3259699485,5cyclictest9-21ksoftirqd/008:35:000
3259699482,7cyclictest18202-21cstates12:05:120
3259699482,5cyclictest0-21swapper/010:40:180
3259699481,7cyclictest101ktimersoftd/011:00:150
32599994717,5cyclictest41-21ksoftirqd/308:00:263
32598994737,3cyclictest33-21ksoftirqd/209:15:002
32598994723,3cyclictest33-21ksoftirqd/212:35:162
3259899471,5cyclictest33-21ksoftirqd/211:10:122
3259799478,11cyclictest7810-21latency_hist08:30:011
3259699475,5cyclictest9-21ksoftirqd/010:55:250
3259699473,7cyclictest25479-21sed11:15:000
3259699472,8cyclictest13997-21latency11:55:180
3259699472,8cyclictest13997-21latency11:55:180
3259699472,6cyclictest9-21ksoftirqd/009:10:200
32596994711,5cyclictest9-21ksoftirqd/008:20:210
32596994710,4cyclictest9-21ksoftirqd/007:25:010
3259999465,8cyclictest27116-21gzip10:10:223
32599994642,2cyclictest391rcuc/312:00:233
3259899463,5cyclictest121rcu_preempt09:45:262
3259899461,3cyclictest121rcu_preempt11:20:422
32598994613,4cyclictest33-21ksoftirqd/208:00:122
3259699464,5cyclictest9-21ksoftirqd/009:23:020
32596994629,8cyclictest9-21ksoftirqd/011:10:010
3259699462,6cyclictest1184-21cstates10:25:130
32596994621,8cyclictest9-21ksoftirqd/008:52:230
32596994620,5cyclictest9-21ksoftirqd/009:52:510
3259999455,6cyclictest41-21ksoftirqd/312:10:213
3259899453,4cyclictest33-21ksoftirqd/207:40:122
3259899452,5cyclictest33-21ksoftirqd/212:00:212
3259899452,4cyclictest33-21ksoftirqd/210:00:132
3259899452,4cyclictest33-21ksoftirqd/209:50:122
3259899451,4cyclictest33-21ksoftirqd/211:15:182
3259899451,4cyclictest33-21ksoftirqd/207:20:222
3259699456,6cyclictest9-21ksoftirqd/007:36:350
32596994525,5cyclictest9-21ksoftirqd/007:30:120
3259699450,6cyclictest9-21ksoftirqd/008:15:010
3259999445,6cyclictest1303-21runrttasks11:22:053
3259999440,7cyclictest401ktimersoftd/309:25:133
32598994435,7cyclictest62250irq/145-enp4s0-07:30:132
32596994437,4cyclictest15542-21cron09:50:010
3259699442,6cyclictest12783-21latency_hist11:55:000
3259999437,4cyclictest14067-21ps09:45:173
3259899433,2cyclictest121rcu_preempt10:35:132
3259699439,4cyclictest9-21ksoftirqd/012:20:130
3259699435,5cyclictest9-21ksoftirqd/009:33:410
3259699433,6cyclictest20600-21cat12:10:100
3259699432,6cyclictest302-21latency_hist09:20:000
32596994320,6cyclictest9-21ksoftirqd/011:25:170
32596994320,6cyclictest9-21ksoftirqd/011:20:160
32598994216,4cyclictest33-21ksoftirqd/207:27:082
3259899420,4cyclictest121rcu_preempt08:30:112
3259799428,9cyclictest0-21swapper/108:19:131
3259699422,6cyclictest4608-21cut11:35:230
32596994213,4cyclictest9-21ksoftirqd/008:35:160
3259799417,10cyclictest0-21swapper/110:35:131
32596994122,6cyclictest9-21ksoftirqd/009:35:010
32596994120,5cyclictest9-21ksoftirqd/010:05:170
3259699410,8cyclictest9-21ksoftirqd/009:00:250
3259699392,6cyclictest9-21ksoftirqd/012:03:570
3259699392,5cyclictest9-21ksoftirqd/010:12:400
32596993717,5cyclictest9-21ksoftirqd/007:55:130
32596993521,6cyclictest9-21ksoftirqd/010:50:140
32596993521,6cyclictest9-21ksoftirqd/007:40:180
3259699351,5cyclictest9-21ksoftirqd/011:45:240
32596993428,4cyclictest9-21ksoftirqd/008:45:050
3259699335,5cyclictest9-21ksoftirqd/009:40:140
32596993327,4cyclictest9-21ksoftirqd/011:32:480
32596993327,4cyclictest9-21ksoftirqd/008:42:580
3259699331,5cyclictest9-21ksoftirqd/012:35:230
32596993227,3cyclictest9-21ksoftirqd/007:50:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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