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2026-07-03 - 09:55
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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 100 highest latencies:
System rackbslot7.osadl.org (updated Fri Jul 03, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1278821610,20sleep3451rcuc/318:53:013
1936321180,5sleep20-21swapper/221:45:512
677121120,8sleep30-21swapper/321:24:063
677121120,8sleep30-21swapper/321:24:063
1365521106,17sleep10-21swapper/118:53:371
1437399944,76cyclictest32382-21ssh22:08:020
14384999040,10cyclictest181rcu_preempt19:58:361
14384998958,10cyclictest181rcu_preempt22:44:501
14392998858,21cyclictest8689-21forks21:28:102
14384998851,9cyclictest17228-21ssh00:25:201
14384998844,13cyclictest181rcu_preempt22:48:181
14373998867,15cyclictest14748-21fschecks_time21:38:120
14384998748,8cyclictest181rcu_preempt22:28:051
14392998639,7cyclictest181rcu_preempt00:14:502
14392998639,7cyclictest181rcu_preempt00:14:502
14384998663,10cyclictest181rcu_preempt23:24:121
14392998559,18cyclictest15788-21fschecks_time00:23:122
14392998549,15cyclictest181rcu_preempt23:10:062
14384998556,8cyclictest181rcu_preempt20:52:521
14384998550,11cyclictest181rcu_preempt21:13:571
14392998360,16cyclictest14165-21apt-config20:32:532
14392998338,13cyclictest181rcu_preempt19:32:532
14384998355,7cyclictest181rcu_preempt19:20:501
14384998346,8cyclictest181rcu_preempt23:37:331
14384998346,8cyclictest181rcu_preempt23:37:331
14384998343,8cyclictest181rcu_preempt19:48:121
14384998333,14cyclictest0-21swapper/120:08:331
14384998333,14cyclictest0-21swapper/120:08:331
14373998363,13cyclictest18246-21latency22:38:160
1437399835,31cyclictest15472-21apt-get00:23:050
1411628310,47sleep214137-21sh18:57:502
14392998253,14cyclictest0-21swapper/222:38:072
14384998252,8cyclictest5688-21ssh21:23:341
14384998252,8cyclictest5688-21ssh21:23:341
14373998222,27cyclictest23960-21ssh21:53:170
14392998162,11cyclictest0-21swapper/222:23:252
14392998129,16cyclictest0-21swapper/220:58:372
14384998160,14cyclictest19989-21apt-key19:12:541
14384998159,14cyclictest12294-21latency_hist23:22:541
14384998156,8cyclictest181rcu_preempt19:43:001
14384998156,8cyclictest181rcu_preempt19:43:001
14384998148,14cyclictest27763-21ssh23:48:161
14384998145,8cyclictest181rcu_preempt20:47:531
14384998135,14cyclictest181rcu_preempt21:06:351
1437399812,38cyclictest0-21swapper/021:28:040
14392998034,12cyclictest181rcu_preempt22:08:192
14392998010,35cyclictest39-21ksoftirqd/221:22:502
14384998049,9cyclictest14718-21ssh00:21:351
14384998042,8cyclictest181rcu_preempt19:27:531
14384998035,7cyclictest181rcu_preempt23:54:451
14384998035,7cyclictest181rcu_preempt23:54:451
14384998025,25cyclictest0-21swapper/120:27:511
14373998064,10cyclictest994-21fschecks_time23:58:120
1437399804,38cyclictest7484-21threads00:08:260
14373998017,24cyclictest29381-21sh22:03:040
14373998017,24cyclictest29381-21sh22:03:040
14373998013,28cyclictest29265-21/usr/sbin/munin21:08:190
14392997955,8cyclictest181rcu_preempt18:58:442
14392997953,9cyclictest22679-21rm22:45:432
14392997937,13cyclictest181rcu_preempt20:37:532
14384997953,9cyclictest8266-21kworker/u17:1+xprtiod00:06:171
14384997946,8cyclictest181rcu_preempt21:50:131
14384997946,8cyclictest181rcu_preempt21:50:131
14384997945,7cyclictest181rcu_preempt19:13:561
14384997944,13cyclictest5829-21kworker/u17:0-rpciod22:18:231
14384997940,17cyclictest6598-21/usr/sbin/munin00:08:271
14384997928,22cyclictest0-21swapper/123:38:441
14373997963,10cyclictest7929-21rm23:15:070
14392997852,20cyclictest30199-21acpi23:53:002
14392997852,20cyclictest30199-21acpi23:53:002
14384997849,8cyclictest181rcu_preempt19:07:541
14384997846,8cyclictest181rcu_preempt00:16:391
14384997846,8cyclictest181rcu_preempt00:16:391
14384997845,9cyclictest1380-21ssh23:58:221
14384997842,11cyclictest181rcu_preempt21:41:221
14384997837,13cyclictest181rcu_preempt21:54:171
14373997859,12cyclictest22136-21diskmemload23:24:210
14373997814,17cyclictest16993-21fschecks_time19:03:150
1437399781,34cyclictest28742-21fschecks_time19:38:120
14373997810,24cyclictest19040-21/usr/sbin/munin23:34:120
14373997810,24cyclictest19040-21/usr/sbin/munin23:34:120
1439299772,37cyclictest5941-21fschecks_count21:23:472
1439299772,37cyclictest5941-21fschecks_count21:23:472
14392997714,26cyclictest0-21swapper/223:59:592
14384997747,8cyclictest181rcu_preempt19:53:241
14384997742,12cyclictest181rcu_preempt22:33:081
14384997737,17cyclictest25212-21ssh21:02:271
14384997732,12cyclictest181rcu_preempt23:08:411
14373997753,18cyclictest26605-21latency_hist22:52:530
1437399771,38cyclictest29411-21cron22:57:490
1437399771,38cyclictest29411-21cron22:57:490
14373997712,22cyclictest29755-21ssh22:58:020
14373997712,21cyclictest14133-21apt-get18:58:040
14392997653,16cyclictest28689-21/usr/sbin/munin21:08:282
14392997647,20cyclictest22450-21apt-key20:57:552
1439299763,38cyclictest11868-21apt-get23:23:052
14392997619,9cyclictest0-21swapper/221:48:052
14392997619,9cyclictest0-21swapper/221:48:052
14384997639,8cyclictest181rcu_preempt21:18:561
1438499763,47cyclictest31-21ksoftirqd/121:43:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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