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2026-07-06 - 12:51
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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 all highest latencies:
System rackbslot7.osadl.org (updated Mon Jul 06, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49049910858,37cyclictest3996-21apt-get20:32:480
4838210513,64sleep04854-21latencyplot18:57:410
49049910349,44cyclictest21684-21apt-get19:47:490
49049910234,26cyclictest8481-21seq00:26:560
49049910234,26cyclictest8481-21seq00:26:560
49049910036,23cyclictest14589-21seq21:54:170
4904999930,24cyclictest0-21swapper/021:17:030
4904999734,23cyclictest21652-21seq23:00:150
4904999642,18cyclictest11935-21/usr/sbin/munin23:38:060
4904999629,25cyclictest0-21swapper/021:36:540
4904999629,25cyclictest0-21swapper/021:36:540
34332968,59sleep13445-21apt-get18:52:491
4904999540,24cyclictest3620-21seq20:31:210
4904999431,24cyclictest0-21swapper/022:01:540
4904999431,24cyclictest0-21swapper/022:01:540
4904999336,22cyclictest1665-21seq23:21:390
4904999238,17cyclictest27237-21ssh22:16:100
4904999234,26cyclictest6414-21seq19:02:300
4904999233,23cyclictest1911-21runrttasks00:15:170
4904999233,23cyclictest1911-21runrttasks00:15:170
4904999230,24cyclictest0-21swapper/023:32:010
4904999230,23cyclictest352-21runrttasks19:16:400
4904999230,23cyclictest352-21runrttasks19:16:400
4904999138,20cyclictest26110-21seq21:19:280
4904999133,23cyclictest22768-21seq23:02:430
4904999131,16cyclictest21075-21ssh21:12:380
4904999044,38cyclictest12393-21ssh20:57:520
4904999044,38cyclictest12393-21ssh20:57:520
4904999036,19cyclictest10019-21seq19:11:340
4904999035,20cyclictest18120-21seq19:37:050
4904999034,20cyclictest352-21runrttasks19:06:520
4904999032,24cyclictest19732-21seq19:42:080
4904999032,23cyclictest0-21swapper/020:56:450
4904999032,21cyclictest0-21swapper/022:22:500
4904999029,24cyclictest0-21swapper/022:53:470
4904998964,18cyclictest3069-21ssh00:17:470
4904998939,15cyclictest4162-21seq23:25:160
4904998939,15cyclictest4162-21seq23:25:160
4904998938,19cyclictest16484-21seq19:31:430
4904998930,26cyclictest0-21swapper/021:44:030
4904998929,24cyclictest0-21swapper/023:57:100
4913998857,14cyclictest181rcu_preempt23:57:402
4904998837,21cyclictest352-21runrttasks22:27:530
4904998836,14cyclictest20475-21seq22:04:020
4904998835,20cyclictest24481-21seq19:55:450
4904998835,20cyclictest24481-21seq19:55:450
4904998835,15cyclictest29629-21seq20:11:280
4904998834,16cyclictest32601-21seq20:18:210
4904998832,18cyclictest0-21swapper/019:45:360
4904998831,21cyclictest0-21swapper/020:51:390
4904998831,21cyclictest0-21swapper/020:51:390
4904998829,21cyclictest24600-21runrttasks22:12:090
4904998829,21cyclictest24600-21runrttasks22:12:090
4904998827,23cyclictest0-21swapper/023:45:380
4904998826,24cyclictest9222-21runrttasks22:39:000
4904998737,22cyclictest27875-21seq00:03:550
4904998732,22cyclictest0-21swapper/020:15:250
4904998731,20cyclictest0-21swapper/020:04:140
4904998730,22cyclictest0-21swapper/020:44:340
4904998730,20cyclictest0-21swapper/022:46:130
4904998730,20cyclictest0-21swapper/020:24:370
4904998730,20cyclictest0-21swapper/020:24:370
4904998726,25cyclictest15681-21runrttasks22:50:140
4904998726,25cyclictest15681-21runrttasks22:50:140
4904998643,36cyclictest352-21runrttasks22:32:520
4904998642,35cyclictest0-21swapper/019:17:530
4904998640,15cyclictest30210-21seq21:27:340
4904998636,40cyclictest17317-21/usr/sbin/munin23:48:120
4904998636,40cyclictest17317-21/usr/sbin/munin23:48:120
4904998636,26cyclictest9929-21seq23:34:360
4904998636,26cyclictest9929-21seq23:34:360
4904998635,20cyclictest26439-21seq20:02:130
4904998635,20cyclictest26439-21seq20:02:130
4904998629,23cyclictest0-21swapper/023:59:370
4904998627,22cyclictest0-21swapper/021:39:510
492299854,29cyclictest6427-21chrt23:28:153
4913998543,33cyclictest29650-21ls00:07:542
4904998530,21cyclictest0-21swapper/021:51:180
4913998467,11cyclictest4887-21kworker/u17:1-rpciod22:48:042
4913998467,11cyclictest4887-21kworker/u17:1-rpciod22:48:042
4913998464,10cyclictest0-21swapper/221:08:112
4913998462,12cyclictest0-21swapper/223:12:592
4913998462,12cyclictest0-21swapper/223:12:592
4910998440,33cyclictest4361-21kernelversion20:33:021
4904998436,16cyclictest14657-21seq19:24:130
4904998435,21cyclictest352-21runrttasks00:11:410
4904998429,23cyclictest0-21swapper/023:11:100
398228421,33sleep20-21swapper/218:53:152
4913998362,13cyclictest0-21swapper/219:52:532
4913998362,13cyclictest0-21swapper/219:52:532
4910998341,32cyclictest27583-21timerwakeupswit20:03:121
4904998350,24cyclictest28089-21apt-get22:17:480
4904998350,24cyclictest28089-21apt-get22:17:480
4904998329,20cyclictest0-21swapper/020:38:380
4904998328,19cyclictest0-21swapper/021:07:360
4904998328,19cyclictest0-21swapper/021:07:360
4913998254,20cyclictest7639-21netstat21:43:052
4910998263,14cyclictest4896-21cyclictest00:27:401
4910998263,14cyclictest4896-21cyclictest00:27:401
4910998261,12cyclictest3410-21sh22:30:071
4904998223,25cyclictest31454-21runrttasks23:17:340
4904998223,25cyclictest31454-21runrttasks23:17:340
492299814,27cyclictest7047-21taskset19:02:503
492299813,35cyclictest15753-21chrt21:03:213
492299813,35cyclictest15753-21chrt21:03:213
4913998156,19cyclictest7628-21latency20:43:022
4910998129,28cyclictest11816-21diskmemload22:22:371
4910998129,28cyclictest11816-21diskmemload22:22:371
492299803,32cyclictest22241-21chrt22:07:543
492299803,32cyclictest22241-21chrt22:07:543
4910998052,21cyclictest24770-21kworker/u19:1+events_unbound23:07:361
4904998030,21cyclictest0-21swapper/021:31:480
248472800,11sleep2381ktimers/222:12:392
248472800,11sleep2381ktimers/222:12:392
492299792,37cyclictest10839-21chrt22:42:483
4913997938,33cyclictest24627-21kworker/u19:2+nfsiod22:02:402
4913997938,33cyclictest24627-21kworker/u19:2+nfsiod22:02:402
492299784,31cyclictest13069-21taskset21:52:423
492299782,34cyclictest9318-21taskset19:08:083
4913997833,7cyclictest181rcu_preempt21:39:292
492299773,41cyclictest0-21swapper/320:58:513
492299773,41cyclictest0-21swapper/320:58:513
4913997759,11cyclictest28457-21cpuspeed20:07:552
4913997753,15cyclictest2374-21systemd-journal19:42:382
4913997745,22cyclictest28265-21processes21:23:112
4913997711,24cyclictest24536-21runrttasks21:17:452
4910997752,17cyclictest16651-21netstat21:58:051
4910997752,17cyclictest16651-21netstat21:58:051
4913997654,16cyclictest23232-21kernelversion23:03:022
4913997613,26cyclictest27730-21seq20:03:142
4913997612,25cyclictest26208-21seq19:59:132
4913997612,25cyclictest26208-21seq19:59:132
4913997612,23cyclictest1078-21seq21:32:452
4913997612,23cyclictest1078-21seq21:32:452
4910997653,15cyclictest2374-21systemd-journal23:56:011
4913997550,13cyclictest0-21swapper/220:48:002
4913997550,13cyclictest0-21swapper/220:48:002
4913997511,23cyclictest22807-21seq19:49:532
491099758,26cyclictest6693-21seq19:02:421
4910997551,13cyclictest0-21swapper/121:02:551
4910997551,13cyclictest0-21swapper/121:02:551
4913997457,10cyclictest24014-21ssh21:17:372
4913997454,10cyclictest0-21swapper/223:38:092
4913997452,12cyclictest0-21swapper/220:17:582
4913997411,24cyclictest8362-21seq23:32:502
4913997411,24cyclictest8362-21seq23:32:502
4910997458,10cyclictest15921-21latency_hist21:57:401
4913997352,10cyclictest0-21swapper/223:17:542
4913997326,35cyclictest20816-21wc19:43:122
4913997311,24cyclictest14928-21seq21:02:202
4913997311,24cyclictest14928-21seq21:02:202
4910997352,14cyclictest3045-21acpi00:17:471
4910997347,17cyclictest21762-21sh21:13:031
491399725,28cyclictest3079-21runrttasks00:17:492
4913997252,8cyclictest0-21swapper/222:27:402
4913997252,10cyclictest0-21swapper/222:17:402
4913997248,13cyclictest0-21swapper/223:23:132
4913997248,13cyclictest0-21swapper/223:23:132
4910997254,10cyclictest0-21swapper/123:22:531
4910997254,10cyclictest0-21swapper/123:22:531
4910997249,17cyclictest29399-21latency_hist00:07:391
4910997244,15cyclictest0-21swapper/119:57:411
4910997244,15cyclictest0-21swapper/119:57:411
4913997156,8cyclictest0-21swapper/222:33:262
4913997152,11cyclictest0-21swapper/220:38:002
4913997150,12cyclictest0-21swapper/219:07:402
4910997150,14cyclictest0-21swapper/123:32:391
4910997149,15cyclictest13798-21fschecks_count19:23:001
492299703,38cyclictest0-21swapper/322:33:073
492299702,35cyclictest27312-21chrt21:22:393
491399709,24cyclictest5278-21seq20:36:562
491399709,22cyclictest3433-21seq20:28:542
4913997055,8cyclictest0-21swapper/222:58:072
4913997053,10cyclictest0-21swapper/222:28:012
4913997010,25cyclictest2028-21seq20:26:562
4913997010,25cyclictest2028-21seq20:26:562
4913997010,24cyclictest29972-21seq20:12:422
491099707,25cyclictest16495-21seq23:46:151
491099706,26cyclictest21308-21seq22:06:211
4910997050,11cyclictest0-21swapper/123:50:431
4910997050,11cyclictest0-21swapper/123:50:431
4910997049,12cyclictest0-21swapper/123:07:561
4910997048,16cyclictest10338-21fschecks_count21:48:001
4910997045,18cyclictest11816-21diskmemload22:33:151
4913996954,8cyclictest0-21swapper/222:38:152
4913996953,8cyclictest0-21swapper/219:28:142
4913996948,14cyclictest21820-21sh22:07:382
491099697,26cyclictest24167-21seq23:58:071
4910996955,8cyclictest0-21swapper/120:59:111
4910996955,8cyclictest0-21swapper/120:59:111
4910996954,8cyclictest0-21swapper/121:28:011
4910996952,11cyclictest300-21rs:main1
4910996943,17cyclictest297-21systemd-logind20:52:381
4910996943,17cyclictest297-21systemd-logind20:52:381
4913996849,10cyclictest0-21swapper/223:12:402
4910996847,10cyclictest0-21swapper/122:47:591
4910996847,10cyclictest0-21swapper/122:47:591
4910996846,15cyclictest4896-21cyclictest23:13:091
4910996846,15cyclictest4896-21cyclictest23:13:091
4910996846,15cyclictest27805-21kworker/u19:3+events_unbound22:17:391
4910996846,11cyclictest0-21swapper/120:38:141
4910996845,13cyclictest0-21swapper/100:12:551
4910996845,13cyclictest0-21swapper/100:12:551
4910996841,19cyclictest29729-21cron20:12:371
4910996831,24cyclictest406-21grep23:18:141
4913996751,9cyclictest0-21swapper/219:18:132
4913996751,8cyclictest0-21swapper/223:43:432
4913996750,8cyclictest0-21swapper/218:58:002
4913996748,11cyclictest352-21runrttasks20:52:592
4913996745,12cyclictest0-21swapper/221:32:392
4913996739,20cyclictest20148-21apt-key23:52:402
4913996739,20cyclictest20148-21apt-key23:52:402
4913996710,23cyclictest30343-21ssh22:21:292
4913996710,23cyclictest30343-21ssh22:21:292
4910996751,10cyclictest297-21systemd-logind20:27:391
4910996751,10cyclictest297-21systemd-logind20:27:391
4910996748,13cyclictest277-21dbus-daemon23:37:381
4910996748,13cyclictest277-21dbus-daemon23:37:381
4910996746,10cyclictest0-21swapper/122:08:101
4910996746,10cyclictest0-21swapper/122:08:101
4910996742,12cyclictest0-21swapper/119:58:441
4910996742,12cyclictest0-21swapper/119:58:441
4913996652,8cyclictest0-21swapper/219:08:122
4913996650,7cyclictest0-21swapper/219:12:542
4913996650,7cyclictest0-21swapper/219:12:542
4910996648,13cyclictest4896-21cyclictest22:43:131
4910996646,13cyclictest3733-21latency_hist20:32:401
4910996644,16cyclictest8313-21latency22:38:031
4910996635,23cyclictest16553-21cron19:32:371
4910996622,32cyclictest32009-21diskmemload00:12:041
4913996550,9cyclictest5376-21apt-get23:27:482
4913996548,11cyclictest10816-21/usr/sbin/munin22:42:542
4913996547,9cyclictest0-21swapper/221:57:392
4913996546,11cyclictest0-21swapper/200:17:412
4913996546,11cyclictest0-21swapper/200:17:412
4913996523,17cyclictest14965-21tr19:27:372
4910996551,8cyclictest0-21swapper/121:32:591
4910996551,8cyclictest0-21swapper/121:32:591
4910996547,11cyclictest0-21swapper/121:08:011
4910996546,9cyclictest0-21swapper/121:27:401
4910996546,8cyclictest0-21swapper/119:48:101
4910996546,13cyclictest32300-21switchtime20:18:111
4910996543,15cyclictest4896-21cyclictest21:38:471
4910996542,12cyclictest0-21swapper/119:42:391
492299643,43cyclictest22299-21taskset19:48:103
4913996451,9cyclictest4896-21cyclictest23:59:352
4913996445,13cyclictest15792-21sh21:03:222
4913996445,13cyclictest15792-21sh21:03:222
4910996446,9cyclictest0-21swapper/123:02:401
4910996445,9cyclictest0-21swapper/123:38:111
4910996445,9cyclictest0-21swapper/122:22:531
4910996442,8cyclictest0-21swapper/120:12:541
4910996441,13cyclictest0-21swapper/119:42:581
4910996439,19cyclictest7930-21switchtime20:43:111
4913996347,10cyclictest17310-21ntp_kernel_err19:33:032
4913996345,13cyclictest352-21runrttasks22:54:552
4913996344,12cyclictest4896-21cyclictest21:52:402
4910996348,10cyclictest2374-21systemd-journal22:56:481
4910996345,9cyclictest0-21swapper/120:52:591
4910996343,13cyclictest0-21swapper/118:57:591
4910996342,12cyclictest0-21swapper/119:12:391
4910996326,24cyclictest25623-21cat21:18:281
4922996243,11cyclictest0-21swapper/323:52:563
492299623,46cyclictest29791-21chrt00:07:593
492299623,40cyclictest29436-21chrt23:13:073
492299623,40cyclictest29436-21chrt23:13:073
4913996247,8cyclictest0-21swapper/200:27:412
4910996244,11cyclictest0-21swapper/119:17:591
4910996243,9cyclictest0-21swapper/119:12:561
4910996243,9cyclictest0-21swapper/119:12:561
492299613,45cyclictest8122-21taskset21:43:143
492299613,42cyclictest6455-21taskset19:02:373
4922996113,33cyclictest0-21swapper/323:47:413
4913996143,13cyclictest8743-21munin-run00:27:372
4913996141,10cyclictest0-21swapper/200:03:102
4910996147,9cyclictest7400-21ssh21:43:001
492299603,42cyclictest29287-21chrt00:07:383
492299594,40cyclictest18585-21chrt21:07:593
492299594,39cyclictest24692-21taskset19:57:383
492299594,39cyclictest24692-21taskset19:57:383
492299584,38cyclictest6305-21taskset20:38:133
492299583,39cyclictest10388-21taskset23:35:533
492299583,39cyclictest10388-21taskset23:35:533
492299583,37cyclictest11916-21taskset19:17:403
492299583,37cyclictest11916-21taskset19:17:403
492299583,36cyclictest4527-21chrt21:38:033
492299573,42cyclictest23762-21taskset23:57:583
492299572,39cyclictest11204-21taskset20:53:123
492299565,34cyclictest2480-21chrt22:28:123
492299554,39cyclictest19048-21taskset22:02:433
492299554,38cyclictest20144-21taskset23:52:393
492299554,38cyclictest20144-21taskset23:52:393
492299553,38cyclictest8789-21taskset22:38:143
492299553,38cyclictest22151-21chrt23:01:403
492299553,36cyclictest5331-21chrt00:21:283
492299544,36cyclictest25474-21taskset23:07:363
492299543,38cyclictest6671-21chrt00:23:073
492299543,38cyclictest6671-21chrt00:23:073
492299543,38cyclictest15979-21chrt19:28:133
492299543,37cyclictest32004-21taskset23:17:573
492299543,36cyclictest1360-21taskset20:23:103
492299543,36cyclictest1360-21taskset20:23:103
492299543,34cyclictest21411-21taskset19:47:373
492299542,38cyclictest11981-21chrt19:17:483
492299534,34cyclictest28020-21chrt21:23:033
492299534,31cyclictest29018-21chrt20:08:113
492299533,38cyclictest15169-21chrt19:27:413
492299533,37cyclictest16858-21chrt22:52:493
492299533,35cyclictest3274-21chrt21:36:133
492299533,35cyclictest3274-21chrt21:36:133
492299533,35cyclictest26317-21taskset23:08:053
492299533,33cyclictest31891-21chrt22:23:103
492299532,38cyclictest32735-21taskset00:12:573
492299532,38cyclictest32735-21taskset00:12:573
492299524,32cyclictest4105-21chrt20:32:543
492299524,31cyclictest28888-21chrt22:18:113
492299524,31cyclictest28888-21chrt22:18:113
492299523,36cyclictest9654-21chrt20:48:133
492299523,36cyclictest9654-21chrt20:48:133
492299523,35cyclictest2701-21chrt20:28:003
492299523,34cyclictest10905-21taskset21:48:133
492299523,32cyclictest16749-21taskset22:52:403
492299523,32cyclictest16749-21taskset22:52:403
4922995227,15cyclictest0-21swapper/320:07:403
492299522,35cyclictest4016-21chrt23:24:503
492299522,35cyclictest4016-21chrt23:24:503
492299514,36cyclictest17745-21chrt19:33:123
492299513,30cyclictest30620-21chrt21:27:543
492299513,24cyclictest917-21kworker/3:1+events20:42:483
492299508,24cyclictest0-21swapper/319:58:133
492299508,24cyclictest0-21swapper/319:58:133
4922995030,12cyclictest215512sleep321:12:593
492299494,33cyclictest13194-21taskset23:40:233
492299493,32cyclictest16469-21taskset21:58:013
492299493,32cyclictest16469-21taskset21:58:013
492299492,35cyclictest487-21chrt20:22:373
492299492,35cyclictest26871-21taskset22:15:073
407024811,21sleep30-21swapper/318:53:203
492299474,31cyclictest18413-21chrt19:37:413
492299443,30cyclictest30334-21chrt20:13:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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