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2026-09-20 - 08:12
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack8slot2.osadl.org (updated Sun Sep 20, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55311299210199,5cyclictest79-21hwrng00:11:410
55311599209194,11cyclictest79-21hwrng19:35:133
55311599209194,11cyclictest79-21hwrng19:35:133
55311499168151,13cyclictest79-21hwrng23:10:152
5531159915256,37cyclictest0-21swapper/321:21:083
5531159915256,37cyclictest0-21swapper/321:21:083
5531139914411,87cyclictest623585-21apt-get21:45:091
553112991398,111cyclictest191rcu_preempt22:50:330
5531149913684,34cyclictest0-21swapper/223:00:372
5531149913684,34cyclictest0-21swapper/223:00:372
55311499135115,16cyclictest607612-21kworker/u16:14+rpciod21:41:202
55311599134126,5cyclictest10550irq/205-8000000.ethernet-rx021:40:253
5531149913387,42cyclictest685226-21sed23:09:562
5531139913390,16cyclictest0-21swapper/122:46:081
5531139913390,16cyclictest0-21swapper/122:46:081
55311399133112,13cyclictest553111-21cyclictest20:35:291
55311599132128,2cyclictest0-21swapper/322:10:193
55311499132123,7cyclictest0-21swapper/223:51:002
55311399132102,23cyclictest0-21swapper/121:21:161
55311399132102,23cyclictest0-21swapper/121:21:161
55311499130111,16cyclictest79-21hwrng19:15:452
5531129912880,44cyclictest646706-21ssh22:15:530
553112991282,41cyclictest538687-21kworker/u16:0+rpciod19:14:560
553114991271,46cyclictest732397-21latency_hist00:14:572
55311499126111,11cyclictest0-21swapper/222:42:022
55311399126110,12cyclictest79-21hwrng23:13:191
55311299126110,7cyclictest79-21hwrng00:23:590
553114991251,115cyclictest0-21swapper/223:30:442
5531159912484,31cyclictest10550irq/205-8000000.ethernet-rx023:40:263
55311499124113,6cyclictest79-21hwrng22:05:442
55311499124113,6cyclictest79-21hwrng22:05:442
55311399123110,5cyclictest79-21hwrng19:33:101
55311499119111,5cyclictest79-21hwrng21:18:382
55311399119109,7cyclictest0-21swapper/123:21:241
55311399116109,5cyclictest79-21hwrng23:49:101
55311399116109,4cyclictest79-21hwrng00:07:361
5531149911599,12cyclictest79-21hwrng19:41:212
553112991154,29cyclictest706094-21kworker/u16:5+rpciod23:39:570
5531139911339,71cyclictest10350irq/163-8000000.ethernet-tx622:59:571
553112991137,97cyclictest171ktimers/000:15:470
5531139911231,77cyclictest553111-21cyclictest23:40:371
55311399112103,6cyclictest79-21hwrng21:06:211
5531149911157,40cyclictest565692-21kworker/u16:1+xprtiod19:55:102
5531149911145,19cyclictest623899-21ssh21:45:082
55311399111103,5cyclictest79-21hwrng21:39:071
5531149911072,35cyclictest0-21swapper/222:21:202
5531149911072,35cyclictest0-21swapper/222:21:202
55311399110102,5cyclictest79-21hwrng20:19:151
5531129911031,75cyclictest625533-21/usr/sbin/munin21:46:220
5531149910944,19cyclictest0-21swapper/200:05:262
5531149910889,13cyclictest604377-21kworker/u16:2+rpciod21:19:582
5531149910889,13cyclictest604377-21kworker/u16:2+rpciod21:19:582
5531149910850,52cyclictest0-21swapper/222:10:382
5531149910844,53cyclictest0-21swapper/200:30:102
5531149910820,39cyclictest0-21swapper/219:25:482
5531149910820,39cyclictest0-21swapper/219:25:482
5531139910892,12cyclictest79-21hwrng23:02:041
5531139910892,12cyclictest79-21hwrng23:02:041
5531139910793,11cyclictest79-21hwrng20:03:531
5531149910647,18cyclictest0-21swapper/220:19:572
5531159910596,6cyclictest10550irq/205-8000000.ethernet-rx022:00:223
5531139910598,5cyclictest79-21hwrng00:21:561
5531139910589,13cyclictest0-21swapper/122:00:191
5531129910597,5cyclictest744002-21uniq00:30:470
5531159910499,3cyclictest628726-21ntp_states21:51:033
5531149910493,9cyclictest79-21hwrng23:17:252
5531149910489,7cyclictest0-21swapper/200:20:092
5531149910487,14cyclictest79-21hwrng22:04:432
5531149910485,7cyclictest79-21hwrng23:20:292
5531149910448,49cyclictest0-21swapper/221:55:342
553113991043,65cyclictest31-21ksoftirqd/120:55:161
5531149910341,21cyclictest0-21swapper/219:30:442
5531129910377,18cyclictest0-21swapper/021:41:190
5531139910291,8cyclictest0-21swapper/119:40:511
5531129910288,10cyclictest79-21hwrng20:00:490
5531159910191,7cyclictest0-21swapper/323:20:023
5531159910153,41cyclictest0-21swapper/322:59:583
5531149910172,22cyclictest0-21swapper/220:35:092
5531129910129,66cyclictest171ktimers/020:30:110
553113991001,84cyclictest620010-21sendmail-msp21:41:541
553113999992,5cyclictest79-21hwrng20:43:491
553113999986,11cyclictest79-21hwrng21:16:351
553113999930,56cyclictest714470-21ssh23:50:061
553112999988,6cyclictest79-21hwrng21:50:230
553112999955,38cyclictest0-21swapper/023:40:470
553115999788,5cyclictest79-21hwrng00:00:263
553114999771,24cyclictest10550irq/205-8000000.ethernet-rx023:39:562
553113999785,9cyclictest79-21hwrng23:28:411
553113999783,7cyclictest79-21hwrng19:28:031
553113999783,7cyclictest79-21hwrng19:28:031
553115999686,7cyclictest0-21swapper/320:21:153
553115999673,15cyclictest45-21rcuc/322:26:133
55311299963,88cyclictest692503-21sendmail-msp23:20:490
553112999621,62cyclictest565692-21kworker/u16:1+xprtiod19:55:100
553115999591,2cyclictest0-21swapper/323:56:073
553114999564,20cyclictest579158-21kworker/u16:12+rpciod20:40:512
553112999552,38cyclictest0-21swapper/021:21:260
553112999552,38cyclictest0-21swapper/021:21:260
553113999488,4cyclictest79-21hwrng21:34:001
553113999486,5cyclictest79-21hwrng23:38:551
553112999488,4cyclictest10550irq/205-8000000.ethernet-rx022:01:030
553115999340,39cyclictest0-21swapper/323:10:103
55311499931,4cyclictest721483-21sendmail-msp00:00:572
553113999372,9cyclictest672157-21ntpq22:51:031
553112999326,61cyclictest634482-21latency_hist21:59:550
55311299931,58cyclictest56-21kcompactd000:25:210
553114999269,19cyclictest0-21swapper/223:40:222
553114999255,29cyclictest381ktimers/220:30:192
553112999280,9cyclictest0-21swapper/020:20:510
55311299925,30cyclictest571594-21kworker/u16:7+rpciod20:19:570
55311299924,66cyclictest678020-21sendmail-msp23:00:170
55311299924,66cyclictest678020-21sendmail-msp23:00:170
553112999221,8cyclictest598360-21apt-get21:10:090
553112999221,8cyclictest598360-21apt-get21:10:090
553115999170,14cyclictest0-21swapper/319:40:493
553113999183,5cyclictest79-21hwrng19:23:571
553113999152,29cyclictest0-21swapper/123:09:561
55311299914,69cyclictest700482-21fschecks_count23:30:330
55311299911,88cyclictest0-21swapper/000:05:460
553114999041,44cyclictest609327-21ssh21:25:082
55311499903,73cyclictest19-21rcu_preempt21:01:062
553114999014,55cyclictest672099-21ntpq22:50:592
55311399906,6cyclictest740922-21ntpq00:25:581
55311299906,73cyclictest0-21swapper/022:55:400
55311299896,75cyclictest171ktimers/021:05:410
553112998912,70cyclictest0-21swapper/019:35:170
553112998912,70cyclictest0-21swapper/019:35:170
553114998875,10cyclictest0-21swapper/221:10:272
553114998875,10cyclictest0-21swapper/221:10:272
553113998866,13cyclictest0-21swapper/122:24:571
553113998866,13cyclictest0-21swapper/122:24:571
55311399884,54cyclictest29-21rcuc/119:35:321
55311399884,54cyclictest29-21rcuc/119:35:321
55311599872,77cyclictest727386-21sleep00:06:543
553114998780,5cyclictest79-21hwrng21:53:272
55311299872,54cyclictest528-21systemd-logind22:47:480
55311299872,54cyclictest528-21systemd-logind22:47:480
553113998663,14cyclictest10550irq/205-8000000.ethernet-rx000:01:281
553112998659,23cyclictest0-21swapper/019:30:110
55311299861,76cyclictest0-21swapper/023:49:560
55311299861,74cyclictest0-21swapper/022:40:410
553115998557,15cyclictest0-21swapper/319:55:083
55311399856,30cyclictest19-21rcu_preempt22:15:041
553112998554,21cyclictest598063-21diskmemload22:20:210
553112998554,21cyclictest598063-21diskmemload22:20:210
553115998467,12cyclictest0-21swapper/320:00:503
553114998462,12cyclictest0-21swapper/221:35:092
553113998466,13cyclictest0-21swapper/122:35:361
553113998466,13cyclictest0-21swapper/122:35:361
553112998439,42cyclictest10550irq/205-8000000.ethernet-rx020:35:450
553115998375,6cyclictest10550irq/205-8000000.ethernet-rx022:41:413
553115998364,17cyclictest461ktimers/322:50:263
553115998347,33cyclictest0-21swapper/323:15:083
553115998320,58cyclictest553111-21cyclictest23:00:163
553115998320,58cyclictest553111-21cyclictest23:00:163
553114998374,5cyclictest654268-21processes22:26:192
553114998366,11cyclictest738179-21kworker/u16:17+rpciod00:39:572
553114998366,11cyclictest37-21rcuc/222:39:232
553114998366,11cyclictest37-21rcuc/222:39:232
553114998345,33cyclictest0-21swapper/221:30:332
55311399838,68cyclictest31-21ksoftirqd/123:30:141
55311399832,71cyclictest611552-21modprobe21:27:181
553112998325,48cyclictest9750irq/115-8000000.ethernet-tx023:15:450
553115998261,18cyclictest45-21rcuc/322:24:563
553115998261,18cyclictest45-21rcuc/322:24:563
553115998246,28cyclictest706094-21kworker/u16:5+xprtiod23:45:083
55311599824,15cyclictest658302-21modprobe22:31:193
553112998245,31cyclictest171ktimers/023:25:170
553112998240,37cyclictest638380-21ssh22:05:120
553112998240,37cyclictest638380-21ssh22:05:120
553112998234,32cyclictest558559-21kworker/u16:16+rpciod19:40:360
55311299821,74cyclictest613726-21kernelversion21:30:380
55311299821,67cyclictest414930-21kworker/u16:14+rpciod19:21:040
553115998158,18cyclictest461ktimers/300:25:123
55311599814,44cyclictest0-21swapper/300:35:203
553113998147,31cyclictest0-21swapper/119:10:301
55311299819,57cyclictest686621-21ssh23:10:580
553112998130,46cyclictest0-21swapper/020:45:250
553112998127,50cyclictest610505-21ntp_states21:26:000
55311299811,45cyclictest652951-21sshd-session22:25:190
55311299810,67cyclictest685532-21kworker/u16:33+xprtiod00:01:210
553115998058,18cyclictest461ktimers/319:15:113
553114998067,7cyclictest0-21swapper/223:56:132
553113998046,24cyclictest301ktimers/123:15:461
553113998045,12cyclictest723136-21kworker/u16:13+xprtiod00:30:101
553113998031,38cyclictest732629-21ssh00:15:131
55311599795,70cyclictest716699-21modprobe23:52:193
553115997935,26cyclictest608041-21kworker/u16:18+xprtiod21:45:173
553114997955,13cyclictest0-21swapper/222:59:582
553113997955,21cyclictest729910-21ntpq00:10:421
553113997943,32cyclictest0-21swapper/121:02:231
553112997925,48cyclictest617459-21sh21:35:390
55311299791,72cyclictest661109-21ntpq22:35:410
55311299791,72cyclictest661109-21ntpq22:35:410
55311299791,70cyclictest643147-21ssh22:11:010
553114997870,5cyclictest79-21hwrng23:27:392
553112997828,41cyclictest0-21swapper/023:09:570
553115997760,15cyclictest461ktimers/300:31:003
55311299774,51cyclictest718513-21df23:55:300
553112997739,34cyclictest10550irq/205-8000000.ethernet-rx000:35:540
553115997646,14cyclictest461ktimers/320:15:433
553114997665,4cyclictest0-21swapper/220:45:462
55311499762,8cyclictest667401-21apt-get22:45:172
55311499762,8cyclictest667401-21apt-get22:45:172
553113997663,6cyclictest0-21swapper/119:55:241
55311299766,60cyclictest590927-21sh20:50:230
553112997628,45cyclictest586852-21sendmail-msp20:40:420
55311299762,37cyclictest0-21swapper/020:10:250
55311299762,37cyclictest0-21swapper/020:10:250
55311299761,69cyclictest574069-21hostname20:05:260
553115997554,13cyclictest10150irq/147-8000000.ethernet-tx421:55:453
553115997549,24cyclictest0-21swapper/322:49:563
553115997549,24cyclictest0-21swapper/322:49:563
553114997563,7cyclictest37-21rcuc/219:49:572
553114997548,24cyclictest723975-21kworker/u16:14+xprtiod00:15:512
553113997557,14cyclictest301ktimers/100:35:461
553113997547,22cyclictest0-21swapper/122:25:111
553115997455,12cyclictest0-21swapper/323:26:083
553114997465,6cyclictest79-21hwrng20:26:252
553113997453,12cyclictest0-21swapper/120:20:361
553112997456,15cyclictest714462-21apt-get23:50:160
55311299742,68cyclictest593598-21ps20:56:000
553112997425,45cyclictest657723-21ssh22:31:020
553115997349,18cyclictest0-21swapper/322:05:333
553115997349,18cyclictest0-21swapper/322:05:333
553115997332,38cyclictest0-21swapper/320:05:273
553115997310,29cyclictest45-21rcuc/300:21:373
553114997354,14cyclictest0-21swapper/219:20:222
553114997335,32cyclictest0-21swapper/220:21:052
55311299732,65cyclictest567329-21ntp_states19:45:560
55311299731,67cyclictest559785-21systemd-userwor19:26:020
55311299731,67cyclictest559785-21systemd-userwor19:26:020
55311299731,64cyclictest581990-21/usr/sbin/munin20:25:310
55311599721,30cyclictest613522-21fschecks_time21:30:343
553114997222,45cyclictest646443-21wc22:15:392
553112997229,38cyclictest0-21swapper/021:17:380
55311299721,56cyclictest555199-21apt-get19:15:070
553115997158,10cyclictest461ktimers/300:15:213
553115997155,11cyclictest0-21swapper/322:35:313
553115997155,11cyclictest0-21swapper/322:35:313
553115997129,37cyclictest0-21swapper/320:50:223
55311599711,63cyclictest599357-21ssh21:10:443
55311599711,63cyclictest599357-21ssh21:10:443
55311599711,47cyclictest45-21rcuc/322:15:443
553114997139,29cyclictest0-21swapper/200:26:092
553113997158,10cyclictest0-21swapper/119:54:561
553113997153,9cyclictest301ktimers/122:30:581
553112997163,5cyclictest79-21hwrng19:50:340
553115997050,11cyclictest461ktimers/321:25:183
553115997035,26cyclictest45-21rcuc/320:40:073
55311599701,46cyclictest0-21swapper/321:35:323
553114997051,9cyclictest381ktimers/219:45:222
553113997041,22cyclictest0-21swapper/120:45:321
55311299702,39cyclictest0-21swapper/021:01:040
553115996959,7cyclictest0-21swapper/323:05:423
553115996936,22cyclictest461ktimers/320:30:203
553114996950,5cyclictest685542-21kworker/u16:43+rpciod23:45:082
553114996949,14cyclictest19-21rcu_preempt20:10:522
553114996949,14cyclictest19-21rcu_preempt20:10:522
553113996953,12cyclictest301ktimers/119:45:131
553113996952,15cyclictest301ktimers/121:51:011
553113996950,16cyclictest29-21rcuc/120:50:361
553113996829,37cyclictest0-21swapper/121:10:441
553113996829,37cyclictest0-21swapper/121:10:441
55311599672,61cyclictest691378-21kworker/u16:1+rpciod23:39:543
553114996733,23cyclictest395-21dbus-broker19:38:182
553114996733,23cyclictest395-21dbus-broker19:38:182
553113996744,20cyclictest664845-21sh22:40:541
553113996742,21cyclictest0-21swapper/120:05:411
553115996633,24cyclictest1-21systemd21:05:463
553114996651,11cyclictest0-21swapper/220:00:362
553115996546,13cyclictest461ktimers/321:00:573
553115996531,28cyclictest0-21swapper/321:15:273
553115996521,37cyclictest461ktimers/319:50:443
553115996449,11cyclictest0-21swapper/320:56:043
553115996442,18cyclictest0-21swapper/319:30:463
553115996431,28cyclictest0-21swapper/319:21:073
553115996429,26cyclictest0-21swapper/320:35:183
553115996414,32cyclictest553111-21cyclictest19:25:123
553115996414,32cyclictest553111-21cyclictest19:25:123
553114996451,10cyclictest553111-21cyclictest22:32:522
553114996433,19cyclictest381ktimers/220:50:092
553115996347,12cyclictest461ktimers/323:30:113
553113996333,23cyclictest631179-21ssh21:55:111
553113996332,29cyclictest0-21swapper/122:05:251
553113996332,29cyclictest0-21swapper/122:05:251
553115996243,14cyclictest0-21swapper/320:10:313
553115996243,14cyclictest0-21swapper/320:10:313
553115996141,17cyclictest461ktimers/319:45:123
553113996139,16cyclictest0-21swapper/123:55:441
55311399612,39cyclictest31-21ksoftirqd/120:25:051
553112996124,33cyclictest0-21swapper/019:09:570
55311399604,36cyclictest31-21ksoftirqd/119:15:111
553113996040,15cyclictest0-21swapper/122:10:591
553113996015,31cyclictest553111-21cyclictest20:30:531
55311599591,42cyclictest553111-21cyclictest20:45:103
553114995944,13cyclictest381ktimers/221:05:442
553113995937,17cyclictest0-21swapper/120:11:011
553113995937,17cyclictest0-21swapper/120:11:011
553115995748,6cyclictest461ktimers/300:10:423
553115995739,13cyclictest0-21swapper/319:10:313
553114995735,16cyclictest0-21swapper/220:55:322
553114995638,10cyclictest0-21swapper/219:10:312
553114995637,9cyclictest0-21swapper/220:06:142
553115995534,15cyclictest0-21swapper/320:25:323
553113995031,13cyclictest0-21swapper/119:09:581
553114994827,8cyclictest0-21swapper/219:09:572
553115994134,5cyclictest553208-21latency_hist19:09:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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