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2026-07-07 - 03:31
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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 Tue Jul 07, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26813214210,17sleep10-21swapper/118:52:561
280399912757,12cyclictest18691-21systemd-run00:07:350
280399912757,12cyclictest18691-21systemd-run00:07:350
280399911952,11cyclictest0-21swapper/023:07:550
3018821110,6sleep230184-21ntp_states21:43:062
280459911134,31cyclictest0-21swapper/119:47:361
280459910932,40cyclictest9855-21sh22:57:561
280399910951,9cyclictest28204-21kworker/u17:1+flush-179:021:43:020
2778921046,77sleep00-21swapper/018:56:220
280459910374,17cyclictest3879-21sh22:47:541
280459910238,31cyclictest26904-21fschecks_time20:34:071
28045991012,84cyclictest20659-21apt-get21:27:461
2804599973,68cyclictest14820-21apt-get19:57:481
28048999673,13cyclictest23046-21latency_hist20:22:362
2804599962,72cyclictest22474-21ssh00:12:581
28039999675,15cyclictest10408-21ssh22:58:080
28045999454,34cyclictest28026-21cyclictest23:47:371
28045999353,34cyclictest0-21swapper/121:17:361
28045999327,34cyclictest0-21swapper/119:42:351
28039999271,14cyclictest13265-21ssh23:57:560
28039999271,14cyclictest13265-21ssh23:57:560
28045999045,40cyclictest0-21swapper/123:38:121
2804599902,54cyclictest176702sleep121:22:471
2804599902,54cyclictest176702sleep121:22:471
28039999059,21cyclictest21920-21latency20:17:580
2804599893,62cyclictest30047-21apt-get20:42:481
28048998866,15cyclictest17460-21sshd21:38:102
28045998755,22cyclictest20297-21needreboot00:09:421
2804599873,65cyclictest32762-21apt-get21:47:481
28045998735,45cyclictest10778-21cut23:53:081
28039998768,14cyclictest28026-21cyclictest23:57:320
28039998763,16cyclictest21403-21latency_hist20:17:360
28039998763,16cyclictest21403-21latency_hist20:17:360
28048998661,19cyclictest9960-21sh21:09:052
28048998661,19cyclictest9960-21sh21:09:052
28039998666,14cyclictest865-21latency_hist23:37:350
28039998642,29cyclictest181rcu_preempt00:17:510
28039998642,29cyclictest181rcu_preempt00:17:510
2803999863,50cyclictest19168-21apt-get00:07:580
28045998544,33cyclictest0-21swapper/122:38:081
28045998544,33cyclictest0-21swapper/122:38:081
28045998527,47cyclictest0-21swapper/121:18:251
277102859,51sleep227711-21sshd18:55:232
28048998449,25cyclictest25211-21grep23:23:072
28045998468,9cyclictest28026-21cyclictest22:17:371
28045998464,12cyclictest11213-21idleruntime-cro21:12:331
28045998464,12cyclictest11213-21idleruntime-cro21:12:331
28045998461,15cyclictest29113-21unixbench_multi20:38:101
28045998461,15cyclictest29113-21unixbench_multi20:38:101
28045998444,31cyclictest0-21swapper/123:28:081
2804599842,69cyclictest0-21swapper/122:02:441
28048998338,11cyclictest181rcu_preempt21:17:502
28039998361,15cyclictest8392-21latency_hist21:07:360
28048998232,14cyclictest181rcu_preempt20:52:592
28045998238,37cyclictest0-21swapper/119:02:581
2804599823,38cyclictest19646-21munin-plugin-st20:12:321
2804599823,38cyclictest19646-21munin-plugin-st20:12:321
2804599822,52cyclictest544-21cron20:02:531
28039998263,13cyclictest9151-21ntp_offset21:08:040
28039998263,13cyclictest9151-21ntp_offset21:08:040
28039998262,14cyclictest14617-21latency_hist19:57:370
28039998261,15cyclictest27977-21latency_hist20:37:350
28048998151,9cyclictest181rcu_preempt23:32:082
28048998146,9cyclictest181rcu_preempt20:07:502
28048998146,9cyclictest181rcu_preempt20:07:502
28045998163,11cyclictest28026-21cyclictest19:27:541
28045998156,17cyclictest27108-21cstates22:32:511
28039998157,17cyclictest5445-21sh21:02:370
28048998064,11cyclictest28026-21cyclictest21:57:352
28048998064,11cyclictest28026-21cyclictest21:57:352
28048998058,13cyclictest18282-21ssh23:12:352
28045998052,18cyclictest6160-21kworker/u17:1-flush-179:023:03:001
2804599803,66cyclictest0-21swapper/119:07:511
28045998028,44cyclictest5418-21sort21:02:371
28045998013,44cyclictest30663-21apt-get23:32:511
28039998062,11cyclictest12862-21cut23:02:560
28039998057,10cyclictest181rcu_preempt21:27:360
28039998057,10cyclictest181rcu_preempt21:27:360
28039998043,10cyclictest181rcu_preempt23:17:590
28048997939,9cyclictest24466-21munin-run20:27:332
28048997936,7cyclictest181rcu_preempt19:12:492
28045997963,10cyclictest16536-21ntp_offset00:03:031
28045997963,10cyclictest16536-21ntp_offset00:03:031
28045997938,34cyclictest28807-21sh00:24:081
28045997937,36cyclictest6778-21ntp_offset21:58:001
28045997937,33cyclictest0-21swapper/100:22:201
28045997937,33cyclictest0-21swapper/100:22:201
2804599793,64cyclictest0-21swapper/123:47:451
2804599793,64cyclictest0-21swapper/123:47:451
28039997957,12cyclictest0-21swapper/020:52:360
28039997957,12cyclictest0-21swapper/019:32:530
28039997951,10cyclictest181rcu_preempt19:27:510
28039997942,31cyclictest27158-21sh22:32:510
28039997941,15cyclictest19296-21mailstats23:13:090
28048997850,8cyclictest181rcu_preempt19:02:512
28048997849,7cyclictest181rcu_preempt21:57:432
28048997845,10cyclictest181rcu_preempt20:37:332
28048997839,12cyclictest0-21swapper/222:32:552
28048997833,8cyclictest181rcu_preempt00:12:362
28045997857,16cyclictest2965-21kworker/u17:0-events_unbound19:33:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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