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2026-06-22 - 05:11
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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 Mon Jun 22, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1607324330,49sleep216075-21switchtime18:54:192
1607324330,49sleep216075-21switchtime18:54:192
16659213012,85sleep116678-21munin-plugin-st18:58:351
16659213012,85sleep116678-21munin-plugin-st18:58:351
1531821126,15sleep00-21swapper/018:53:450
1531821126,15sleep00-21swapper/018:53:450
16816991084,41cyclictest28751-21munin-run23:48:350
168229910233,31cyclictest0-21swapper/100:26:211
16822999530,32cyclictest0-21swapper/121:13:411
16822999424,45cyclictest6750-21sh23:10:311
1681699947,64cyclictest2374-21systemd-journal21:59:320
16822999045,39cyclictest10356-21latency_hist22:23:371
25772880,8sleep22582-21gpgv23:58:382
16822998841,41cyclictest0-21swapper/121:58:391
16822998841,41cyclictest0-21swapper/121:58:391
16816998862,19cyclictest544-21cron20:28:360
16816998763,15cyclictest0-21swapper/023:58:520
16822998636,43cyclictest28221-21sort19:30:521
16816998652,12cyclictest181rcu_preempt21:07:260
16816998636,7cyclictest181rcu_preempt22:25:270
16816998626,37cyclictest15-21ksoftirqd/000:09:100
16824998558,18cyclictest20825-21sendmail_mailqu23:34:082
16822998442,35cyclictest0-21swapper/123:13:581
16822998442,35cyclictest0-21swapper/123:13:581
16822998439,37cyclictest0-21swapper/122:03:361
16816998462,8cyclictest181rcu_preempt23:08:370
16822998366,10cyclictest3740-21/usr/sbin/munin21:18:521
16816998350,16cyclictest181rcu_preempt22:43:080
16824998161,14cyclictest10889-21apt-key20:18:372
16822998163,12cyclictest2374-21systemd-journal21:43:361
16822998143,31cyclictest9145-21ssh00:08:571
1681699813,50cyclictest352-21runrttasks22:10:210
16816998110,39cyclictest15-21ksoftirqd/019:48:510
16824998060,13cyclictest14992-21netstat20:29:012
16824998060,13cyclictest14992-21netstat20:29:012
16822998063,10cyclictest31248-21timerwakeupswit21:09:141
16822998063,10cyclictest31248-21timerwakeupswit21:09:141
16822998060,14cyclictest16797-21sh23:28:351
16822998037,34cyclictest0-21swapper/119:48:361
16822998037,34cyclictest0-21swapper/119:48:361
16822998031,41cyclictest0-21swapper/122:34:081
1682299802,43cyclictest23952-21diskmemload23:38:151
16816998059,8cyclictest181rcu_preempt19:28:360
16816998054,20cyclictest2713-21latency_hist23:58:390
16816998041,21cyclictest16802-21cyclictest20:53:380
16816998039,9cyclictest0-21swapper/000:19:040
1681699803,54cyclictest16088-21ssh21:39:070
16824997957,16cyclictest27755-21apt-key21:58:372
16824997957,16cyclictest27755-21apt-key21:58:372
1682499792,55cyclictest3077-21cpuspeed23:59:172
1682299794,62cyclictest0-21swapper/120:33:451
1682299794,62cyclictest0-21swapper/120:33:451
16822997930,42cyclictest0-21swapper/122:14:001
16816997936,17cyclictest181rcu_preempt00:16:320
16816997936,17cyclictest181rcu_preempt00:16:320
1681699793,45cyclictest27358-21apt-get19:28:500
16824997857,15cyclictest23337-21fschecks_count23:38:562
16822997860,11cyclictest14549-21ssh22:29:111
16822997840,31cyclictest23952-21diskmemload23:20:101
16816997856,14cyclictest2374-21systemd-journal22:37:270
16816997853,11cyclictest181rcu_preempt22:53:570
16816997844,26cyclictest211rcuc/020:54:020
16816997840,12cyclictest181rcu_preempt22:28:430
16816997839,12cyclictest181rcu_preempt20:23:210
1681699783,30cyclictest15-21ksoftirqd/023:12:020
16824997753,16cyclictest16802-21cyclictest19:14:112
16824997739,29cyclictest25225-21latency_hist19:23:352
16822997737,32cyclictest0-21swapper/121:29:041
16822997718,22cyclictest26509-21ls22:49:111
16822997718,22cyclictest26509-21ls22:49:111
16816997755,16cyclictest8730-21unixbench_multi20:09:110
16816997755,16cyclictest8730-21unixbench_multi20:09:110
16816997750,18cyclictest25935-21latency_hist23:43:370
1681699773,38cyclictest9221-21head23:14:110
1681699773,38cyclictest9221-21head23:14:110
16816997716,22cyclictest15-21ksoftirqd/019:08:390
16824997661,9cyclictest1382-21ntp_offset21:14:042
16822997657,13cyclictest5051-21sh00:02:211
16822997656,14cyclictest26888-21apt-key19:28:371
1682299764,67cyclictest0-21swapper/123:03:471
16822997636,32cyclictest0-21swapper/122:08:381
16822997635,34cyclictest20405-21sendmail_mailst22:39:091
16822997631,37cyclictest0-21swapper/122:43:511
1682299762,63cyclictest0-21swapper/123:53:481
16816997656,7cyclictest181rcu_preempt00:26:460
1681699765,37cyclictest15-21ksoftirqd/019:56:460
16816997649,10cyclictest181rcu_preempt20:29:310
16816997649,10cyclictest181rcu_preempt20:29:310
16816997648,7cyclictest181rcu_preempt21:20:230
16816997642,12cyclictest181rcu_preempt19:34:420
16816997637,17cyclictest181rcu_preempt22:46:510
16824997559,9cyclictest0-21swapper/223:29:032
16824997558,11cyclictest1-21systemd19:43:362
16824997556,12cyclictest297-21systemd-logind21:33:362
1682499753,50cyclictest28182-21apt-get21:58:522
16822997557,12cyclictest2374-21systemd-journal21:03:351
16822997545,22cyclictest19786-21modprobe23:33:341
16816997553,15cyclictest17773-21sh23:29:070
16816997544,16cyclictest181rcu_preempt20:13:580
16816997544,11cyclictest181rcu_preempt20:35:200
16816997544,11cyclictest181rcu_preempt20:35:200
16816997544,10cyclictest181rcu_preempt22:23:320
16816997541,12cyclictest181rcu_preempt23:24:400
16816997538,16cyclictest181rcu_preempt19:09:580
16816997535,8cyclictest181rcu_preempt21:16:450
16816997521,13cyclictest0-21swapper/021:09:290
16816997521,13cyclictest0-21swapper/021:09:290
16824997457,10cyclictest6790-21ssh21:23:522
16824997455,12cyclictest17095-21cstates18:58:552
16824997455,12cyclictest17095-21cstates18:58:552
1682299744,64cyclictest0-21swapper/119:08:491
16822997424,43cyclictest32259-21sh22:59:061
16816997415,16cyclictest161ktimers/022:50:220
16816997415,16cyclictest161ktimers/022:50:220
16824997359,9cyclictest352-21runrttasks23:01:532
16824997357,11cyclictest1-21systemd19:28:372
16824997356,12cyclictest2037-21fschecks_time22:08:582
16822997358,11cyclictest16802-21cyclictest19:34:091
16822997350,16cyclictest23952-21diskmemload22:23:581
1682299734,63cyclictest0-21swapper/119:53:511
1682299733,60cyclictest0-21swapper/119:58:481
16816997347,9cyclictest181rcu_preempt20:42:420
1681699734,55cyclictest24869-21ntpq20:59:040
1681699734,32cyclictest16978-21/usr/sbin/munin18:59:110
1681699734,32cyclictest16978-21/usr/sbin/munin18:59:110
16816997341,25cyclictest0-21swapper/021:34:010
16816997336,11cyclictest181rcu_preempt00:08:380
16824997259,9cyclictest16802-21cyclictest00:24:022
16824997256,10cyclictest23952-21diskmemload00:05:172
16824997253,13cyclictest24396-21cstates20:58:522
16824997253,10cyclictest0-21swapper/200:14:102
16824997253,10cyclictest0-21swapper/200:14:102
16824997248,8cyclictest181rcu_preempt22:18:522
16824997240,21cyclictest21190-21fschecks_count20:48:562
1682499723,48cyclictest11279-21apt-get20:19:002
16824997229,30cyclictest2155-21apt-get23:03:452
16822997256,10cyclictest23949-21cron20:58:351
16822997255,11cyclictest1-21systemd21:38:361
16822997253,13cyclictest24204-21runrttasks19:18:581
1682299724,63cyclictest0-21swapper/119:38:511
1682299724,57cyclictest0-21swapper/120:38:501
1682299723,62cyclictest0-21swapper/119:48:481
1682299723,54cyclictest1812-21ssh22:08:521
16822997231,33cyclictest0-21swapper/100:13:531
16822997231,33cyclictest0-21swapper/100:13:531
1682299722,63cyclictest6477-21proc_pri00:04:061
16822997223,24cyclictest0-21swapper/120:16:201
16816997250,16cyclictest9223-21rm21:28:050
1681699723,34cyclictest5288-21grep22:14:030
1681699722,31cyclictest20143-21http23:33:510
1587627228,27sleep30-21swapper/318:54:133
1587627228,27sleep30-21swapper/318:54:133
16824997152,13cyclictest27232-21/usr/sbin/munin21:04:112
16824997149,14cyclictest19615-21processes19:04:102
16824997138,21cyclictest20851-21fschecks_count19:08:572
1682299719,53cyclictest0-21swapper/118:58:491
1682299719,53cyclictest0-21swapper/118:58:491
16822997154,10cyclictest0-21swapper/120:43:561
1682299713,53cyclictest12889-21apt-get20:23:441
16822997131,31cyclictest0-21swapper/120:08:511
16822997131,31cyclictest0-21swapper/120:08:511
1682299712,59cyclictest20407-21sendmail19:08:351
1682299712,56cyclictest15987-21wc20:33:371
1682299712,56cyclictest15987-21wc20:33:371
1682299712,54cyclictest23952-21diskmemload21:48:491
1682299712,54cyclictest23952-21diskmemload21:48:491
16822997122,42cyclictest19252-21tune2fs21:43:571
1681699716,46cyclictest15-21ksoftirqd/019:38:520
16816997149,8cyclictest181rcu_preempt21:29:160
16816997147,16cyclictest1857-21idleruntime-cro23:03:350
1681699713,36cyclictest15-21ksoftirqd/019:18:380
16816997123,24cyclictest0-21swapper/021:44:410
16816997114,37cyclictest161ktimers/023:23:100
16824997052,13cyclictest4990-21latency19:59:012
16824997050,15cyclictest29104-21latency22:54:012
16824997049,7cyclictest181rcu_preempt22:52:262
16824997049,7cyclictest181rcu_preempt22:52:262
16824997048,12cyclictest0-21swapper/222:34:092
16824997047,16cyclictest14636-21timerwakeupswit22:29:112
16824997045,18cyclictest29234-21fschecks_time19:33:582
1682299704,59cyclictest0-21swapper/122:53:471
16822997043,19cyclictest18924-21kworker/u18:1+nfsiod21:26:571
1682299703,58cyclictest10772-21apt-get20:18:501
1682299703,57cyclictest14804-21apt-get00:18:461
16822997032,31cyclictest0-21swapper/123:49:121
1682299702,62cyclictest27283-21ssh21:03:521
16816997035,13cyclictest181rcu_preempt19:46:170
16816997035,13cyclictest181rcu_preempt19:46:170
1681699702,28cyclictest15-21ksoftirqd/020:03:380
16824996954,8cyclictest0-21swapper/219:54:102
16824996950,13cyclictest2374-21systemd-journal22:27:272
16824996949,10cyclictest0-21swapper/220:43:572
16824996946,15cyclictest16802-21cyclictest19:48:522
16824996944,16cyclictest14840-21cpu00:18:512
16824996940,20cyclictest23293-21sh21:49:492
16824996940,20cyclictest23293-21sh21:49:492
1681699692,37cyclictest15-21ksoftirqd/021:53:390
1681699692,26cyclictest15-21ksoftirqd/023:48:520
16824996852,10cyclictest8288-21cstates23:13:512
16824996852,10cyclictest8288-21cstates23:13:512
16824996848,10cyclictest0-21swapper/221:44:082
16824996831,29cyclictest19681-21apt-get22:38:482
16824996829,25cyclictest16126-21apt-get20:33:442
16824996829,25cyclictest16126-21apt-get20:33:442
1682299684,58cyclictest0-21swapper/123:38:471
1682299683,55cyclictest0-21swapper/123:43:461
1682299682,56cyclictest22841-21/usr/sbin/munin19:14:071
16816996843,11cyclictest181rcu_preempt22:08:220
16816996834,13cyclictest181rcu_preempt20:05:450
16816996834,13cyclictest181rcu_preempt20:05:450
1681699682,55cyclictest24058-21fschecks_count19:18:560
95432670,6sleep30-21swapper/320:13:543
16824996753,10cyclictest16802-21cyclictest23:48:572
16824996750,11cyclictest297-21systemd-logind22:18:362
1682499672,53cyclictest16283-21ssh21:39:402
16822996750,10cyclictest7090-21unixbench_multi20:04:111
16822996750,10cyclictest7090-21unixbench_multi20:04:111
1682299672,48cyclictest22467-21sed20:53:381
1681699673,37cyclictest22004-21ssh21:48:520
16816996732,10cyclictest181rcu_preempt20:44:050
16816996722,22cyclictest15-21ksoftirqd/021:55:200
16816996722,22cyclictest15-21ksoftirqd/021:55:200
16824996653,9cyclictest16802-21cyclictest23:12:032
16824996652,8cyclictest0-21swapper/219:33:372
16824996651,10cyclictest16802-21cyclictest22:03:582
16824996649,11cyclictest26946-21awk23:44:102
16824996638,20cyclictest11999-21threads23:19:102
16824996631,25cyclictest14110-21apt-get23:23:512
16824996546,9cyclictest0-21swapper/221:09:032
16824996546,9cyclictest0-21swapper/221:09:032
1682499653,42cyclictest4080-21cut21:18:582
16824996531,7cyclictest181rcu_preempt22:44:112
16824996521,36cyclictest1049-21cron19:48:342
16824996521,36cyclictest1049-21cron19:48:342
16824996445,10cyclictest0-21swapper/220:38:572
16824996432,22cyclictest8892-21sshd20:10:152
16824996432,22cyclictest8892-21sshd20:10:152
166362630,5sleep30-21swapper/300:21:173
16824996248,8cyclictest0-21swapper/220:03:512
16824996248,8cyclictest0-21swapper/220:03:512
16824996248,8cyclictest0-21swapper/200:08:582
1682499622,44cyclictest22836-21fschecks_time20:53:582
1682499613,35cyclictest12895-21ssh21:33:522
16824996130,25cyclictest0-21swapper/220:23:552
1683199603,43cyclictest27413-21chrt19:29:233
1683199603,41cyclictest11171-21taskset21:30:053
1683199602,42cyclictest0-21swapper/323:59:023
1683199595,45cyclictest0-21swapper/321:39:083
1683199593,39cyclictest31394-21taskset19:39:113
1683199593,37cyclictest24648-21taskset20:58:593
1683199583,38cyclictest6518-21chrt23:09:523
1683199582,38cyclictest17801-21chrt18:59:133
1683199582,38cyclictest17801-21chrt18:59:133
1683199573,37cyclictest16288-21chrt23:27:143
1683199573,35cyclictest29283-21chrt23:48:543
1683199572,42cyclictest21545-21taskset22:41:233
1683199572,37cyclictest20117-21chrt23:33:473
1683199563,37cyclictest22592-21taskset21:49:063
1683199563,37cyclictest22592-21taskset21:49:063
1683199563,35cyclictest12692-21chrt22:26:483
1683199562,37cyclictest22333-21chrt19:13:513
1683199553,39cyclictest9609-21chrt23:15:103
1683199553,39cyclictest9609-21chrt23:15:103
1683199553,38cyclictest7586-21taskset20:08:363
1683199553,38cyclictest7586-21taskset20:08:363
1683199553,38cyclictest27676-21chrt21:04:023
1683199553,36cyclictest13072-21taskset23:21:353
1683199552,36cyclictest12294-21chrt20:19:303
1683199546,35cyclictest21912-21taskset19:12:263
1683199543,36cyclictest14229-21chrt22:29:033
1683199543,34cyclictest20259-21taskset00:28:013
1683199543,33cyclictest13118-21chrt20:23:553
16831995424,21cyclictest32478-21chrt22:59:103
1683199542,35cyclictest9636-21chrt21:28:393
1683199536,33cyclictest0-21swapper/321:58:583
1683199533,33cyclictest3533-21chrt23:04:573
1683199533,33cyclictest24761-21chrt19:19:103
1683199533,32cyclictest3249-21chrt22:10:223
1683199532,37cyclictest32716-21chrt22:05:283
1683199532,37cyclictest30959-21taskset22:57:353
1683199532,36cyclictest27346-21chrt21:57:493
1683199532,36cyclictest27346-21chrt21:57:493
1683199532,35cyclictest20033-21taskset21:44:123
1683199523,36cyclictest13492-21chrt00:15:493
1683199523,36cyclictest13492-21chrt00:15:493
1683199523,35cyclictest14366-21chrt21:35:403
1683199523,34cyclictest401-21chrt19:44:093
1683199523,34cyclictest401-21chrt19:44:093
1683199522,37cyclictest10523-21chrt00:10:513
1683199522,34cyclictest6502-21chrt00:04:063
1683199522,33cyclictest1439-21chrt21:14:073
1683199522,32cyclictest32491-21chrt23:54:013
1683199513,36cyclictest27241-21chrt22:50:303
1683199513,36cyclictest27241-21chrt22:50:303
1683199513,32cyclictest18263-21chrt23:29:173
1683199513,32cyclictest1406-21chrt19:48:513
1683199512,34cyclictest19435-21chrt20:43:523
1683199512,32cyclictest19171-21chrt19:03:553
1683199504,35cyclictest23483-21taskset22:44:103
1683199503,35cyclictest30611-21taskset21:09:003
1683199503,35cyclictest30611-21taskset21:09:003
1683199503,34cyclictest28291-21chrt23:47:203
1683199493,34cyclictest7948-21chrt20:08:523
1683199493,34cyclictest7948-21chrt20:08:523
1683199483,33cyclictest4725-21taskset22:13:473
1683199482,32cyclictest23603-21chrt23:39:013
1683199482,30cyclictest5143-21chrt21:19:593
1683199463,29cyclictest21912-21taskset20:49:113
1683199453,30cyclictest14525-21taskset20:28:453
1683199453,30cyclictest14525-21taskset20:28:453
1683199453,27cyclictest26400-21chrt19:24:123
1683199452,30cyclictest17752-21chrt20:38:503
1683199442,30cyclictest5208-21taskset19:59:083
1683199442,30cyclictest16693-21taskset22:33:493
1683199432,28cyclictest7648-21taskset22:18:413
1683199423,28cyclictest16579-21chrt20:34:003
1683199423,28cyclictest16579-21chrt20:34:003
1683199422,28cyclictest4154-21taskset19:56:453
1683199422,28cyclictest23649-21taskset20:54:583
1683199422,27cyclictest29051-21taskset19:33:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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