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2026-08-15 - 15:32
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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 rackbslot7.osadl.org (updated Sat Aug 15, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27356991182,76cyclictest4675-21ssh11:45:160
273569911584,25cyclictest27170-21sh12:20:170
273569911584,25cyclictest27170-21sh12:20:170
27364991044,72cyclictest20241-21apt-get08:25:182
27364991044,72cyclictest20241-21apt-get08:25:182
273649910058,13cyclictest181rcu_preempt12:30:162
273649910058,13cyclictest181rcu_preempt12:30:162
27356999869,20cyclictest6777-21latency_hist07:45:020
27356999863,25cyclictest10229-21latency_hist07:55:020
27364999777,15cyclictest27349-21cyclictest10:10:302
27356999767,8cyclictest181rcu_preempt09:50:430
27356999767,23cyclictest9856-21kworker/u19:2+events_unbound11:19:580
183272970,7sleep30-21swapper/312:05:343
27364999652,9cyclictest181rcu_preempt07:50:022
27364999560,13cyclictest181rcu_preempt10:35:152
27364999560,13cyclictest181rcu_preempt10:35:152
27356999571,15cyclictest4412-21rm11:45:010
27356999557,28cyclictest0-21swapper/012:30:340
27356999557,28cyclictest0-21swapper/012:30:340
27364999472,14cyclictest27349-21cyclictest08:55:242
27364999464,8cyclictest181rcu_preempt10:28:172
27360999423,29cyclictest0-21swapper/109:14:401
27364999355,9cyclictest181rcu_preempt10:56:242
27360999326,26cyclictest32372-21seq12:28:171
2736499923,63cyclictest4622-21apt-get11:45:132
27356999275,11cyclictest19343-21unixbench_singl08:20:360
27356999273,12cyclictest16089-21unixbench_singl08:10:350
2722029223,47sleep30-21swapper/307:09:593
27364999174,12cyclictest27349-21cyclictest10:45:332
27360999130,21cyclictest9744-21ssh10:11:121
27360999121,36cyclictest353-21runrttasks08:26:431
27360999121,36cyclictest353-21runrttasks08:26:431
27360999121,31cyclictest4064-21apt-get11:45:091
270282918,57sleep227030-21sshd07:07:252
2736499903,61cyclictest27123-21apt-get12:20:162
2736499903,61cyclictest27123-21apt-get12:20:162
27360999018,30cyclictest0-21swapper/109:55:311
2735699903,61cyclictest985-21/usr/sbin/munin09:05:290
2735699903,61cyclictest985-21/usr/sbin/munin09:05:290
27364998946,14cyclictest181rcu_preempt11:23:582
27364998946,14cyclictest181rcu_preempt11:23:582
27364998942,24cyclictest0-21swapper/209:05:222
27364998942,24cyclictest0-21swapper/209:05:222
27360998928,31cyclictest2070-21taskset10:00:151
27360998923,36cyclictest353-21runrttasks09:29:221
27356998956,13cyclictest181rcu_preempt11:55:330
27356998956,13cyclictest181rcu_preempt11:55:330
27356998954,25cyclictest0-21swapper/011:00:230
2735699893,61cyclictest20241-21apt-get08:25:250
2735699893,61cyclictest20241-21apt-get08:25:250
27364998847,8cyclictest181rcu_preempt11:10:552
27364998846,9cyclictest181rcu_preempt07:10:142
27364998843,15cyclictest181rcu_preempt11:58:122
27364998843,15cyclictest181rcu_preempt11:58:122
27360998825,21cyclictest32400-21seq11:37:391
27360998825,21cyclictest32400-21seq11:37:391
27356998858,15cyclictest181rcu_preempt07:30:100
27356998853,13cyclictest181rcu_preempt08:35:210
27356998850,28cyclictest0-21swapper/011:05:220
27360998727,25cyclictest2329-21ssh12:31:251
27360998727,25cyclictest2329-21ssh12:31:251
27360998727,20cyclictest7068-21seq10:07:281
27360998715,31cyclictest0-21swapper/110:55:011
27356998767,10cyclictest0-21swapper/007:25:010
27356998760,9cyclictest181rcu_preempt10:34:310
27364998665,10cyclictest0-21swapper/208:15:012
27364998646,8cyclictest181rcu_preempt09:10:152
27360998626,26cyclictest4014-21seq11:44:521
27360998625,22cyclictest31140-21seq08:58:371
27360998619,39cyclictest6779-21grep07:45:021
27356998660,8cyclictest181rcu_preempt10:50:350
27356998655,9cyclictest181rcu_preempt08:45:330
27356998655,9cyclictest181rcu_preempt08:45:330
27356998558,8cyclictest181rcu_preempt09:28:240
27356998556,8cyclictest181rcu_preempt08:15:250
27356998549,26cyclictest0-21swapper/011:55:000
27356998538,29cyclictest0-21swapper/007:15:050
27356998535,24cyclictest11980-21ls09:25:010
27356998535,24cyclictest11980-21ls09:25:010
27364998446,9cyclictest181rcu_preempt11:40:022
27360998424,24cyclictest18735-21ssh09:35:171
27360998424,24cyclictest18735-21ssh09:35:171
27360998419,27cyclictest0-21swapper/111:16:221
27356998461,15cyclictest31408-21latency_hist09:00:010
27356998456,8cyclictest181rcu_preempt09:38:250
27356998456,8cyclictest181rcu_preempt09:38:250
27356998450,12cyclictest181rcu_preempt08:05:190
27356998443,8cyclictest181rcu_preempt10:03:120
27356998441,35cyclictest0-21swapper/011:11:250
27364998363,10cyclictest0-21swapper/207:45:002
27364998352,9cyclictest181rcu_preempt10:07:522
27364998334,8cyclictest181rcu_preempt12:15:492
27364998332,21cyclictest25937-21timerwakeupswit09:45:352
27360998333,40cyclictest0-21swapper/109:30:111
27360998327,22cyclictest11557-21apt-get10:15:121
27360998325,27cyclictest2310-21diskmemload11:07:081
27360998325,26cyclictest28874-21seq07:14:531
27360998325,25cyclictest6736-21seq12:39:441
27360998324,22cyclictest24716-21seq08:39:051
27360998322,25cyclictest8121-21seq07:49:221
27356998363,10cyclictest0-21swapper/008:05:010
27356998352,23cyclictest27340-21cpu11:30:150
27356998349,8cyclictest181rcu_preempt11:38:080
27356998349,8cyclictest181rcu_preempt11:38:080
27364998261,11cyclictest0-21swapper/210:00:242
27364998259,18cyclictest28956-21switchtime09:50:342
27364998254,15cyclictest0-21swapper/209:25:022
27364998254,15cyclictest0-21swapper/209:25:022
27364998243,7cyclictest181rcu_preempt09:15:152
27360998227,23cyclictest26023-21seq11:27:341
27360998223,22cyclictest0-21swapper/108:24:191
27360998223,21cyclictest329-21seq10:48:081
27360998222,36cyclictest353-21runrttasks07:22:181
27360998220,26cyclictest0-21swapper/112:14:221
27360998211,27cyclictest0-21swapper/112:15:361
27356998262,9cyclictest0-21swapper/012:40:010
27356998258,8cyclictest181rcu_preempt10:40:440
27356998252,9cyclictest181rcu_preempt09:16:240
27356998234,13cyclictest181rcu_preempt09:32:150
27369998135,34cyclictest1030-21chrt11:40:013
27369998135,34cyclictest1030-21chrt11:40:013
27364998166,9cyclictest0-21swapper/207:15:242
27364998149,11cyclictest181rcu_preempt10:40:342
27364998147,25cyclictest9406-21kworker/u19:2+nfsiod11:52:542
27364998146,13cyclictest181rcu_preempt08:35:242
27364998145,11cyclictest181rcu_preempt12:25:362
27364998140,11cyclictest181rcu_preempt08:15:152
27364998138,9cyclictest181rcu_preempt09:29:142
27360998137,29cyclictest3606-21apt-get07:35:101
27360998137,29cyclictest3606-21apt-get07:35:101
27360998128,20cyclictest8594-21seq09:19:471
27360998125,26cyclictest27969-21seq08:49:091
27360998125,26cyclictest27969-21seq08:49:091
27360998118,23cyclictest8388-21ntp_states11:00:281
27360998117,33cyclictest30960-21latency_hist09:55:011
27360998117,28cyclictest0-21swapper/108:30:211
27360998117,28cyclictest0-21swapper/108:30:211
27360998117,24cyclictest15003-21cut11:11:111
27356998159,16cyclictest297-21in:imuxsock07:59:590
27356998155,19cyclictest0-21swapper/012:01:370
27364998060,13cyclictest30683-21ssh11:35:192
27364998057,12cyclictest0-21swapper/210:35:012
27364998051,20cyclictest19743-21latency_hist08:25:012
27364998049,9cyclictest181rcu_preempt12:35:242
27364998039,8cyclictest181rcu_preempt09:40:022
27364998039,8cyclictest181rcu_preempt09:40:022
27364998037,10cyclictest0-21swapper/211:00:022
27360998065,10cyclictest20224-21kworker/u17:3-rpciod10:33:231
2736099804,66cyclictest8668-21/usr/sbin/munin07:50:311
27360998025,31cyclictest377-21snmpd08:14:361
27360998025,28cyclictest2310-21diskmemload11:20:541
27360998025,28cyclictest2310-21diskmemload11:20:541
27360998024,30cyclictest16394-21ssh12:03:241
27360998024,18cyclictest26270-21seq08:43:021
27360998023,26cyclictest30015-21seq11:34:391
27360998023,25cyclictest17970-21seq08:18:251
27360998022,23cyclictest353-21runrttasks11:54:241
27360998020,24cyclictest0-21swapper/108:03:181
27360998018,33cyclictest0-21swapper/109:40:301
27360998018,25cyclictest0-21swapper/112:05:351
27356998056,9cyclictest181rcu_preempt10:25:240
27356998047,8cyclictest181rcu_preempt08:40:350
27356998035,10cyclictest0-21swapper/009:13:100
269712806,58sleep10-21swapper/107:06:381
27364997961,11cyclictest0-21swapper/212:10:272
27364997959,10cyclictest0-21swapper/211:20:002
27364997955,9cyclictest181rcu_preempt11:40:222
27364997951,8cyclictest181rcu_preempt11:10:032
27364997946,8cyclictest181rcu_preempt08:40:112
27364997942,8cyclictest181rcu_preempt11:30:102
27364997933,28cyclictest0-21swapper/212:09:582
27360997924,25cyclictest1386-21seq07:25:381
27360997924,23cyclictest29733-21seq10:43:251
27360997921,33cyclictest353-21runrttasks09:08:241
27360997921,33cyclictest353-21runrttasks09:08:241
27356997953,9cyclictest181rcu_preempt12:25:320
27356997951,9cyclictest181rcu_preempt09:00:230
27364997853,12cyclictest0-21swapper/211:25:212
27364997842,9cyclictest181rcu_preempt08:32:502
27364997842,9cyclictest181rcu_preempt08:32:502
27364997842,8cyclictest181rcu_preempt07:55:102
27360997823,20cyclictest353-21runrttasks08:52:461
27360997819,25cyclictest0-21swapper/110:26:161
27360997818,25cyclictest0-21swapper/107:15:361
27360997817,26cyclictest25738-21ssh09:45:331
27356997863,9cyclictest59-21kcompactd010:39:080
27356997863,9cyclictest59-21kcompactd010:39:080
27356997857,8cyclictest181rcu_preempt11:25:010
27356997854,7cyclictest181rcu_preempt10:49:220
27356997842,8cyclictest181rcu_preempt07:40:000
27356997842,8cyclictest181rcu_preempt07:40:000
27364997754,14cyclictest3412-21ssh10:52:512
27364997733,12cyclictest181rcu_preempt07:20:352
27360997723,23cyclictest14787-21seq08:08:531
27360997721,30cyclictest353-21runrttasks10:37:301
27360997721,30cyclictest353-21runrttasks10:37:301
27360997719,27cyclictest0-21swapper/111:55:301
27360997719,27cyclictest0-21swapper/111:55:301
27356997764,7cyclictest0-21swapper/012:05:140
27356997754,8cyclictest181rcu_preempt07:10:230
27356997736,15cyclictest181rcu_preempt07:45:200
27364997655,15cyclictest589-21fschecks_count07:25:212
27364997655,12cyclictest497-21systemd-run09:05:002
27364997654,15cyclictest15383-21apt09:30:162
27364997640,10cyclictest16747-21ssh10:22:472
27364997640,10cyclictest16747-21ssh10:22:472
27364997639,8cyclictest181rcu_preempt08:50:152
27364997639,8cyclictest181rcu_preempt08:50:152
27364997636,9cyclictest181rcu_preempt07:50:112
27360997624,21cyclictest32665-21seq09:02:051
27360997615,38cyclictest0-21swapper/107:57:071
27356997656,8cyclictest181rcu_preempt10:56:200
27356997656,10cyclictest0-21swapper/012:20:020
27356997623,31cyclictest181rcu_preempt12:10:350
27364997524,27cyclictest0-21swapper/209:55:162
27356997557,7cyclictest181rcu_preempt10:21:150
27356997557,7cyclictest181rcu_preempt10:21:150
27356997549,8cyclictest181rcu_preempt10:10:390
27356997549,11cyclictest181rcu_preempt09:56:290
27356997537,19cyclictest0-21swapper/008:30:310
27356997537,19cyclictest0-21swapper/008:30:310
27364997454,14cyclictest12846-21unixbench_multi08:00:352
27364997448,9cyclictest181rcu_preempt07:39:262
27364997448,9cyclictest181rcu_preempt07:39:262
27364997428,21cyclictest0-21swapper/209:40:222
27360997434,28cyclictest14777-21ssh10:20:111
27360997434,28cyclictest14777-21ssh10:20:111
27360997424,35cyclictest26546-21apt-get12:20:111
27360997424,35cyclictest26546-21apt-get12:20:111
27360997423,23cyclictest2151-21runrttasks07:30:181
27356997453,8cyclictest181rcu_preempt07:25:150
27356997453,12cyclictest0-21swapper/010:07:280
27364997334,8cyclictest181rcu_preempt12:00:172
27364997331,8cyclictest0-21swapper/208:05:322
27364997325,8cyclictest181rcu_preempt10:15:262
27356997338,11cyclictest181rcu_preempt11:24:030
27356997338,11cyclictest181rcu_preempt11:24:030
27360997218,27cyclictest0-21swapper/109:24:041
27360997218,27cyclictest0-21swapper/109:24:041
2735699726,30cyclictest27246-21latency_hist07:10:030
27356997255,10cyclictest0-21swapper/009:40:230
27356997248,10cyclictest181rcu_preempt10:15:080
27356997136,8cyclictest181rcu_preempt09:49:010
27356997125,12cyclictest0-21swapper/008:54:580
27364997039,11cyclictest181rcu_preempt07:33:192
27364996820,14cyclictest28768-21memory08:50:322
27360996818,22cyclictest0-21swapper/110:56:361
2736999668,46cyclictest4670-21chrt11:45:163
136312620,7sleep30-21swapper/309:26:223
2736999573,36cyclictest5763-21chrt09:15:043
27369995627,24cyclictest0-21swapper/309:05:293
27369995627,24cyclictest0-21swapper/309:05:293
2736999552,38cyclictest21851-21taskset08:30:103
2736999552,38cyclictest21851-21taskset08:30:103
27369995510,35cyclictest0-21swapper/312:20:203
27369995510,35cyclictest0-21swapper/312:20:203
2736999543,37cyclictest7224-21chrt07:45:243
2736999543,33cyclictest0-21swapper/308:25:253
2736999543,33cyclictest0-21swapper/308:25:253
2736999542,36cyclictest21254-21chrt10:30:163
2736999534,35cyclictest1933-21taskset10:50:263
2736999533,37cyclictest16739-21chrt09:31:133
2736999533,35cyclictest7636-21taskset11:00:023
2736999523,36cyclictest32548-21taskset09:00:383
2736999523,34cyclictest30490-21taskset07:15:373
2736999513,36cyclictest17412-21taskset10:24:283
2736999513,36cyclictest17412-21taskset10:24:283
2736999513,35cyclictest10124-21taskset09:20:353
2736999513,35cyclictest10124-21taskset09:20:353
2736999513,34cyclictest8283-21chrt10:10:023
2736999513,34cyclictest24840-21chrt11:25:313
2736999504,33cyclictest10684-21chrt11:05:003
2736999503,37cyclictest25922-21taskset12:18:263
2736999503,35cyclictest5943-21chrt12:37:403
2736999502,37cyclictest29198-21taskset10:42:033
286662493,6sleep30-21swapper/308:50:313
2736999495,31cyclictest30651-21taskset09:54:143
2736999493,37cyclictest17461-21chrt11:15:013
2736999493,34cyclictest19296-21chrt11:16:393
2736999493,34cyclictest15054-21chrt08:10:023
2736999493,34cyclictest11497-21taskset11:55:253
2736999493,34cyclictest11497-21taskset11:55:253
2736999492,35cyclictest21221-21chrt11:20:203
2736999492,35cyclictest21221-21chrt11:20:203
2736999484,32cyclictest3093-21chrt10:00:383
2736999483,34cyclictest32454-21chrt09:55:443
2736999483,32cyclictest25245-21chrt10:35:353
2736999483,32cyclictest25245-21chrt10:35:353
2736999483,32cyclictest15218-21chrt12:00:353
2736999483,31cyclictest18553-21chrt09:35:103
2736999483,31cyclictest18553-21chrt09:35:103
2736999483,30cyclictest19267-21chrt10:26:063
2736999482,35cyclictest25541-21taskset08:40:263
11002483,6sleep30-21swapper/312:30:203
11002483,6sleep30-21swapper/312:30:203
2736999473,32cyclictest32309-21chrt10:46:533
2736999473,30cyclictest32286-21taskset12:28:043
2736999473,27cyclictest2520-21chrt11:41:023
2736999472,35cyclictest27048-21chrt08:45:243
2736999472,35cyclictest27048-21chrt08:45:243
2736999464,31cyclictest29638-21chrt11:33:413
2736999453,33cyclictest8463-21chrt10:10:143
2736999453,28cyclictest8353-21chrt11:50:273
2736999443,32cyclictest25918-21chrt09:45:353
2736999443,31cyclictest17099-21taskset08:15:243
2736999433,31cyclictest19773-21taskset08:24:593
2736999433,30cyclictest22709-21taskset12:13:203
2736999433,28cyclictest23463-21taskset08:35:123
2736999432,29cyclictest27559-21taskset07:10:103
2736999424,29cyclictest12959-21chrt10:16:183
2736999422,30cyclictest5573-21chrt07:40:223
2736999422,28cyclictest10738-21chrt07:55:243
2736999413,29cyclictest4590-21chrt07:35:363
2736999413,29cyclictest4590-21chrt07:35:363
2736999413,29cyclictest13817-21chrt11:09:583
2736999413,28cyclictest9173-21taskset07:50:513
2736999413,26cyclictest31447-21chrt09:00:013
2736999412,27cyclictest5358-21chrt09:14:393
2736999403,28cyclictest31784-21taskset07:20:303
2736999403,28cyclictest21964-21taskset09:40:203
2736999403,27cyclictest11938-21chrt08:00:143
2736999402,29cyclictest923-21taskset07:25:283
2736999402,27cyclictest2005-21taskset07:30:143
2736999393,26cyclictest16164-21taskset08:10:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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