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2026-06-19 - 09:35
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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 376 highest latencies:
System rackbslot7.osadl.org (updated Fri Jun 19, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48599910280,16cyclictest2358-21sh00:19:220
3392210117,60sleep23384-21apt-get18:54:042
1051621010,7sleep10-21swapper/121:49:231
1051621010,7sleep10-21swapper/121:49:231
3909210011,63sleep03933-21awk18:55:120
4873999778,11cyclictest0-21swapper/220:34:212
4873999778,11cyclictest0-21swapper/220:34:212
4873999772,15cyclictest0-21swapper/219:29:232
4873999678,9cyclictest0-21swapper/222:44:102
4867999674,17cyclictest4850-21cyclictest21:15:031
4867999674,17cyclictest4850-21cyclictest21:15:031
4867999641,21cyclictest3553-21latency_hist20:33:501
4867999641,21cyclictest3553-21latency_hist20:33:501
4859999655,7cyclictest181rcu_preempt23:10:420
4873999577,12cyclictest0-21swapper/219:04:182
221002950,7sleep222098-21ssh21:14:532
221002950,7sleep222098-21ssh21:14:532
4859999445,21cyclictest0-21swapper/021:48:500
4859999350,7cyclictest181rcu_preempt21:39:460
4859999250,7cyclictest181rcu_preempt23:35:470
4859999170,12cyclictest0-21swapper/021:04:090
4859999169,12cyclictest0-21swapper/019:04:160
4873999074,9cyclictest0-21swapper/220:39:112
4859998974,10cyclictest170-21jbd2/mmcblk2p2-821:09:200
4859998969,11cyclictest0-21swapper/022:34:540
4859998954,7cyclictest181rcu_preempt23:49:140
4867998870,9cyclictest0-21swapper/123:48:521
4867998843,12cyclictest181rcu_preempt21:03:471
4859998870,10cyclictest0-21swapper/020:19:160
4859998869,9cyclictest0-21swapper/018:59:100
4867998750,7cyclictest181rcu_preempt22:03:081
4859998767,11cyclictest0-21swapper/019:34:210
4873998670,9cyclictest0-21swapper/219:23:512
4873998571,7cyclictest0-21swapper/222:03:472
4873998561,14cyclictest0-21swapper/222:14:132
4859998570,8cyclictest0-21swapper/022:04:160
4859998568,12cyclictest0-21swapper/020:14:120
4859998568,11cyclictest0-21swapper/022:49:250
4859998568,11cyclictest0-21swapper/022:49:250
4859998549,8cyclictest181rcu_preempt22:47:360
4859998549,7cyclictest181rcu_preempt22:29:160
4859998549,7cyclictest181rcu_preempt22:29:160
4873998468,11cyclictest0-21swapper/221:09:162
4873998461,13cyclictest0-21swapper/222:53:502
4873998461,13cyclictest0-21swapper/222:53:502
487399843,35cyclictest12111-21apt-get20:59:002
4859998468,10cyclictest0-21swapper/023:19:120
4859998468,10cyclictest0-21swapper/023:19:120
4859998466,10cyclictest0-21swapper/023:04:230
4859998459,13cyclictest0-21swapper/019:13:500
4859998459,13cyclictest0-21swapper/019:13:500
4873998369,8cyclictest0-21swapper/219:14:122
4873998369,8cyclictest0-21swapper/200:19:022
4873998366,10cyclictest58-21kcompactd022:19:212
4873998364,12cyclictest0-21swapper/222:58:512
4873998362,11cyclictest0-21swapper/223:53:502
4873998338,13cyclictest0-21swapper/222:29:032
4873998338,13cyclictest0-21swapper/222:29:032
4859998365,13cyclictest0-21swapper/019:54:230
4859998365,13cyclictest0-21swapper/019:44:220
4859998348,25cyclictest0-21swapper/023:39:240
4859998344,9cyclictest181rcu_preempt21:55:090
471028311,46sleep14745-21munin-run18:58:481
4859998242,13cyclictest181rcu_preempt20:04:090
4859998239,7cyclictest181rcu_preempt21:36:350
4873998163,11cyclictest0-21swapper/223:13:502
4873998159,13cyclictest0-21swapper/219:34:152
4873998151,8cyclictest181rcu_preempt23:30:012
4873998151,8cyclictest181rcu_preempt23:30:012
4859998167,7cyclictest0-21swapper/020:54:250
4859998158,13cyclictest0-21swapper/022:55:270
4859998138,7cyclictest181rcu_preempt22:17:310
4873998063,9cyclictest0-21swapper/221:39:112
4873998060,10cyclictest0-21swapper/222:24:252
4873998059,11cyclictest0-21swapper/220:09:072
4873998044,11cyclictest58-21kcompactd021:46:462
4867998055,18cyclictest9905-21munin-plugin-st22:43:491
4867998055,18cyclictest9905-21munin-plugin-st22:43:491
486799803,43cyclictest16447-21apt-get22:54:051
4859998065,10cyclictest0-21swapper/000:09:050
4859998058,16cyclictest11085-21ntpd21:49:230
4859998058,16cyclictest11085-21ntpd21:49:230
4873997963,9cyclictest0-21swapper/219:43:492
4873997963,9cyclictest0-21swapper/219:43:492
4873997960,11cyclictest0-21swapper/221:54:032
4873997960,11cyclictest0-21swapper/220:29:082
4873997960,11cyclictest0-21swapper/220:29:082
4873997958,12cyclictest0-21swapper/220:19:142
4867997959,11cyclictest8950-21kworker/u17:0-rpciod23:38:491
4867997944,8cyclictest16295-21ssh22:53:521
4867997944,8cyclictest16295-21ssh22:53:521
4859997961,11cyclictest0-21swapper/021:14:470
4859997961,11cyclictest0-21swapper/021:14:470
4859997960,10cyclictest0-21swapper/020:39:230
4859997953,17cyclictest14845-21latency_hist21:03:490
4859997950,7cyclictest181rcu_preempt23:03:510
4859997943,14cyclictest181rcu_preempt00:28:470
4873997860,9cyclictest0-21swapper/223:55:292
4867997850,8cyclictest181rcu_preempt23:20:301
4867997850,8cyclictest181rcu_preempt23:20:301
4867997847,8cyclictest181rcu_preempt22:09:001
4859997857,12cyclictest0-21swapper/020:44:100
4859997857,11cyclictest0-21swapper/023:59:420
4859997856,12cyclictest0-21swapper/021:19:250
4859997856,11cyclictest0-21swapper/022:09:240
4859997852,14cyclictest15589-21kworker/u18:1-nfsiod22:21:470
4859997845,8cyclictest181rcu_preempt19:24:100
4859997840,7cyclictest181rcu_preempt19:49:080
4859997837,7cyclictest181rcu_preempt23:30:420
4859997837,7cyclictest181rcu_preempt23:30:420
4873997762,8cyclictest0-21swapper/221:29:042
4873997758,9cyclictest0-21swapper/220:49:102
4873997758,10cyclictest0-21swapper/219:03:512
4867997751,7cyclictest181rcu_preempt00:14:061
4859997761,10cyclictest31285-21unixbench_singl21:29:240
4859997757,11cyclictest0-21swapper/023:44:230
4859997757,11cyclictest0-21swapper/023:44:230
4859997754,7cyclictest181rcu_preempt23:14:220
4859997754,14cyclictest20255-21ntp_kernel_err23:55:210
4873997663,7cyclictest0-21swapper/223:44:252
4873997663,7cyclictest0-21swapper/223:44:252
4873997661,9cyclictest0-21swapper/200:24:252
4873997661,8cyclictest0-21swapper/221:49:072
4873997661,8cyclictest0-21swapper/221:49:072
4873997660,9cyclictest0-21swapper/223:34:172
4873997639,8cyclictest181rcu_preempt19:48:472
4867997651,19cyclictest31221-21processes22:24:211
4867997623,17cyclictest6120-21timerandwakeup20:39:231
4859997656,11cyclictest0-21swapper/022:39:140
4859997656,11cyclictest0-21swapper/022:39:140
4859997655,11cyclictest0-21swapper/020:24:130
4873997561,7cyclictest0-21swapper/219:49:072
4873997560,9cyclictest0-21swapper/222:13:492
4873997560,8cyclictest0-21swapper/219:59:212
4873997559,8cyclictest0-21swapper/223:59:422
4873997559,10cyclictest0-21swapper/222:58:572
4867997559,10cyclictest27736-21memory21:24:141
4867997544,8cyclictest181rcu_preempt19:43:501
4867997544,8cyclictest181rcu_preempt19:43:501
4867997531,7cyclictest0-21swapper/123:49:051
4867997518,22cyclictest0-21swapper/123:54:321
4859997560,8cyclictest0-21swapper/020:13:490
4859997555,11cyclictest0-21swapper/021:28:510
4859997555,11cyclictest0-21swapper/019:29:200
4859997549,7cyclictest181rcu_preempt00:14:160
4859997548,7cyclictest181rcu_preempt22:24:430
4859997541,7cyclictest181rcu_preempt19:19:050
4859997540,9cyclictest181rcu_preempt19:14:170
4873997459,8cyclictest0-21swapper/223:24:172
4873997459,8cyclictest0-21swapper/223:14:162
4873997459,8cyclictest0-21swapper/222:35:022
4873997459,8cyclictest0-21swapper/221:24:152
4873997455,10cyclictest0-21swapper/221:19:042
4873997454,11cyclictest0-21swapper/222:04:212
4873997453,9cyclictest0-21swapper/222:43:502
4873997453,9cyclictest0-21swapper/222:43:502
4867997458,10cyclictest11654-21cron19:18:471
4867997452,16cyclictest4754-21fschecks_time23:29:111
4867997452,16cyclictest4754-21fschecks_time23:29:111
4867997444,14cyclictest181rcu_preempt20:04:521
4867997433,11cyclictest181rcu_preempt23:44:041
4867997429,25cyclictest11566-21diskmemload23:03:581
4859997444,7cyclictest181rcu_preempt00:08:510
4859997441,7cyclictest181rcu_preempt20:38:490
4859997441,7cyclictest181rcu_preempt20:38:490
4867997351,16cyclictest30249-21cpu21:29:031
4867997344,21cyclictest15420-21fschecks_time19:29:091
4859997349,17cyclictest0-21swapper/021:59:220
34222730,8sleep13485-21latency_hist21:38:491
4873997258,7cyclictest0-21swapper/200:14:252
4873997254,8cyclictest0-21swapper/221:34:222
4873997252,10cyclictest0-21swapper/220:04:012
4873997225,8cyclictest181rcu_preempt20:13:582
4867997251,8cyclictest31-21ksoftirqd/121:39:291
4867997247,19cyclictest8453-21latency_hist20:48:501
4867997245,21cyclictest11876-21apt-key20:58:531
4867997243,8cyclictest181rcu_preempt23:59:041
4867997240,11cyclictest181rcu_preempt19:19:181
4867997238,8cyclictest181rcu_preempt19:34:041
4867997237,8cyclictest181rcu_preempt19:09:201
4867997237,8cyclictest181rcu_preempt19:09:201
486799722,21cyclictest6927-21cut19:03:591
4859997243,8cyclictest181rcu_preempt20:49:130
4859997240,7cyclictest181rcu_preempt20:29:190
4859997240,7cyclictest181rcu_preempt20:29:190
4873997158,7cyclictest0-21swapper/220:24:112
4873997157,8cyclictest0-21swapper/219:24:092
4873997153,8cyclictest0-21swapper/220:54:032
4873997153,13cyclictest11206-21timerandwakeup23:39:242
4873997150,11cyclictest0-21swapper/200:10:022
4867997149,9cyclictest181rcu_preempt21:44:171
4867997149,15cyclictest24210-21unixbench_multi19:54:241
4867997148,8cyclictest31-21ksoftirqd/100:06:131
4867997133,8cyclictest181rcu_preempt23:42:581
4867997117,24cyclictest0-21swapper/121:58:081
4867997049,16cyclictest4850-21cyclictest22:48:031
4867997047,18cyclictest13747-21fschecks_count19:24:101
4867997039,10cyclictest18813-21kworker/u18:2-rpciod00:28:371
486799703,24cyclictest5273-21fschecks_time18:59:091
4867997010,40cyclictest0-21swapper/122:59:111
363827022,33sleep30-21swapper/318:54:553
4873996956,7cyclictest0-21swapper/223:19:242
4873996956,7cyclictest0-21swapper/223:19:242
4873996953,11cyclictest11566-21diskmemload00:07:152
4873996949,14cyclictest0-21swapper/223:08:512
4867996944,19cyclictest21282-21latency_hist22:08:491
4867996944,17cyclictest20169-21fschecks_count19:44:081
4867996924,19cyclictest0-21swapper/120:18:581
4859996937,7cyclictest181rcu_preempt19:59:090
4873996851,9cyclictest0-21swapper/219:54:102
4873996851,11cyclictest297-21systemd-logind21:08:492
4867996844,15cyclictest17834-21latency_hist21:08:501
4867996838,9cyclictest181rcu_preempt23:24:231
4867996836,21cyclictest28978-21timerwakeupswit20:09:221
4867996836,16cyclictest21605-21/usr/sbin/munin19:49:101
4867996833,12cyclictest181rcu_preempt22:19:121
4867996812,34cyclictest0-21swapper/122:14:091
4859996854,10cyclictest4850-21cyclictest19:39:050
4859996854,10cyclictest4850-21cyclictest19:39:050
4867996746,14cyclictest5160-21ssh22:35:001
4867996745,15cyclictest19676-21snmpd23:10:451
4873996649,11cyclictest7701-21switchtime20:44:232
4867996641,14cyclictest0-21swapper/121:09:211
4867996639,7cyclictest31-21ksoftirqd/121:21:041
4867996634,11cyclictest181rcu_preempt20:28:511
4867996627,19cyclictest2627-21runrttasks00:19:331
4867996626,26cyclictest9401-21timerandwakeup20:49:231
4867996620,25cyclictest0-21swapper/123:14:551
4859996644,8cyclictest181rcu_preempt23:25:040
4867996517,19cyclictest0-21swapper/120:15:591
144702650,7sleep30-21swapper/321:02:583
4867996446,12cyclictest277-21dbus-daemon00:13:481
4873996334,10cyclictest0-21swapper/219:09:172
4873996334,10cyclictest0-21swapper/219:09:172
4867996338,7cyclictest181rcu_preempt22:33:231
4867996338,7cyclictest181rcu_preempt22:33:231
4867996242,14cyclictest24955-21cpuspeed19:59:031
4867996144,12cyclictest4388-21mailstats20:34:221
4867996144,12cyclictest4388-21mailstats20:34:221
4880995738,12cyclictest248892sleep300:03:483
48162560,7sleep30-21swapper/321:39:273
488099534,34cyclictest19150-21taskset23:53:513
488099533,37cyclictest5326-21taskset18:59:103
488099515,33cyclictest3746-21taskset20:34:013
488099515,33cyclictest3746-21taskset20:34:013
488099513,39cyclictest10944-21taskset22:44:223
488099507,33cyclictest3745-21chrt22:33:473
488099507,33cyclictest3745-21chrt22:33:473
488099504,35cyclictest18809-21taskset19:39:123
488099504,35cyclictest18809-21taskset19:39:123
488099504,33cyclictest21497-21chrt21:14:343
488099504,33cyclictest21497-21chrt21:14:343
488099504,33cyclictest21480-21chrt22:08:503
488099496,30cyclictest24569-21chrt22:13:573
488099495,33cyclictest30114-21taskset23:16:573
488099493,36cyclictest5068-21taskset00:24:193
488099493,34cyclictest10957-21taskset23:39:203
488099483,35cyclictest8513-21chrt23:34:293
488099483,35cyclictest4099-21taskset00:23:463
488099483,34cyclictest27073-21taskset00:06:483
488099483,33cyclictest26414-21chrt20:03:513
488099483,32cyclictest25407-21chrt23:08:563
4880994813,25cyclictest23075-21chrt23:04:223
488099475,32cyclictest16161-21chrt22:53:513
488099475,32cyclictest16161-21chrt22:53:513
488099475,32cyclictest11585-21taskset20:58:483
488099474,33cyclictest20780-21taskset21:13:483
488099474,33cyclictest2043-21taskset23:24:153
488099474,33cyclictest11304-21chrt21:50:553
488099474,33cyclictest11304-21chrt21:50:553
488099474,32cyclictest9371-21chrt21:48:483
488099474,32cyclictest5529-21taskset23:29:263
488099474,32cyclictest5529-21taskset23:29:263
488099474,32cyclictest28668-21taskset21:25:243
488099474,30cyclictest8740-21chrt19:09:023
488099474,30cyclictest8740-21chrt19:09:023
488099473,35cyclictest19660-21taskset23:54:563
488099473,35cyclictest13055-21chrt21:54:113
488099473,33cyclictest23746-21taskset19:54:153
488099473,32cyclictest7790-21taskset19:04:243
4880994713,25cyclictest31155-21chrt22:24:183
488099465,31cyclictest18321-21taskset22:03:473
488099464,33cyclictest25141-21taskset21:19:243
488099464,33cyclictest16450-21taskset22:53:593
488099464,32cyclictest21647-21taskset22:09:023
488099464,32cyclictest20891-21taskset19:44:233
488099464,31cyclictest8343-21taskset20:48:473
488099464,31cyclictest4720-21taskset22:34:493
488099464,31cyclictest19925-21taskset22:59:203
488099464,31cyclictest10543-21taskset19:14:093
488099463,34cyclictest32114-21taskset20:19:223
488099463,33cyclictest28115-21chrt22:19:163
488099463,33cyclictest22731-21taskset19:50:513
488099463,33cyclictest15886-21chrt23:48:483
488099463,33cyclictest15886-21chrt23:48:483
488099463,32cyclictest8584-21taskset22:40:043
488099463,32cyclictest8584-21taskset22:40:043
488099463,32cyclictest559-21taskset23:21:563
488099463,32cyclictest559-21taskset23:21:563
488099463,32cyclictest27667-21taskset20:06:383
488099463,32cyclictest1134-21chrt21:34:123
488099463,31cyclictest8620-21chrt20:49:043
488099463,31cyclictest16146-21taskset19:29:243
488099463,30cyclictest29748-21chrt20:14:003
488099462,33cyclictest5642-21chrt20:39:113
488099454,31cyclictest30728-21chrt21:29:133
488099454,30cyclictest29266-21taskset00:09:363
488099453,32cyclictest15096-21taskset21:03:593
488099453,32cyclictest12099-21taskset19:19:113
488099453,31cyclictest845-21taskset20:24:123
488099453,30cyclictest3143-21taskset20:29:393
488099453,30cyclictest3143-21taskset20:29:393
488099452,33cyclictest31139-21chrt00:14:063
488099443,30cyclictest29016-21chrt20:09:223
488099443,28cyclictest13547-21taskset19:24:013
488099432,30cyclictest16933-21chrt19:34:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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