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2026-05-11 - 05:57
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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 Mon May 11, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22457213013,86sleep222472-21latency_hist19:01:252
226299910630,44cyclictest352-21runrttasks21:49:330
226299910546,24cyclictest0-21swapper/000:06:410
226299910535,27cyclictest7180-21rm00:00:070
226299910534,29cyclictest29633-21ssh22:48:460
226299910523,42cyclictest1913-21latency22:56:520
226299910439,24cyclictest0-21swapper/021:11:360
226299910438,27cyclictest32455-21sh21:06:160
226349910334,11cyclictest0-21swapper/119:41:351
226299910337,26cyclictest1782-21ssh21:07:530
226299910336,28cyclictest24156-21rm22:40:080
226299910336,28cyclictest24156-21rm22:40:080
226299910330,38cyclictest30967-21munin-run23:46:240
22634991023,72cyclictest2100-21ssh23:51:421
22634991023,72cyclictest2100-21ssh23:51:421
226299910236,28cyclictest14518-21rm23:17:050
226299910235,28cyclictest14854-21rm22:24:110
226299910235,28cyclictest14854-21rm22:24:110
226299910234,30cyclictest27494-21sh21:51:310
22634991012,58cyclictest27544-21apt-get21:51:421
226299910156,38cyclictest0-21swapper/019:01:290
226299910133,26cyclictest8553-21runrttasks19:56:400
226299910132,29cyclictest3575-21ssh22:06:040
226299910132,29cyclictest3575-21ssh22:06:040
226429910080,14cyclictest2374-21systemd-journal21:09:352
226299910035,27cyclictest17646-21sh23:22:310
226299910035,26cyclictest24034-21ssh00:27:200
226299910035,26cyclictest24034-21ssh00:27:200
226299910035,26cyclictest13919-21rm00:11:310
226299910035,26cyclictest13919-21rm00:11:310
226299910034,25cyclictest22221-21ssh00:25:370
22629999939,29cyclictest8188-21ssh00:01:460
22629999939,29cyclictest8188-21ssh00:01:460
22629999938,24cyclictest31341-21ssh22:51:510
22629999938,22cyclictest12341-21/usr/sbin/munin21:26:440
22629999936,27cyclictest5221-21swap23:02:000
22629999936,27cyclictest5221-21swap23:02:000
22629999933,33cyclictest352-21runrttasks19:18:340
22629999933,33cyclictest352-21runrttasks19:18:340
22629999933,28cyclictest17180-21rm21:34:050
22629999933,27cyclictest9132-21ssh22:14:500
22629999933,27cyclictest9132-21ssh22:14:500
22629999933,27cyclictest26918-21sh23:38:250
22629999838,19cyclictest11090-21ps23:11:580
22629999838,19cyclictest11090-21ps23:11:580
22629999834,41cyclictest22749-21seq21:42:570
22629999834,24cyclictest17983-21rm22:29:360
22629999736,26cyclictest16795-21ls20:21:280
22629999735,20cyclictest26482-21taskset19:11:390
22629999735,20cyclictest26482-21taskset19:11:390
22629999734,24cyclictest3577-21ssh23:53:170
22629999734,24cyclictest3577-21ssh23:53:170
22629999733,45cyclictest352-21runrttasks22:16:400
22629999636,21cyclictest19521-21seq00:21:220
22629999633,24cyclictest8253-21taskset19:56:170
22629999632,21cyclictest14937-21seq20:15:590
22629999632,21cyclictest14937-21seq20:15:590
22629999539,37cyclictest9561-21seq21:21:450
22629999537,18cyclictest29668-21/usr/sbin/munin19:21:550
22629999537,18cyclictest29668-21/usr/sbin/munin19:21:550
22629999530,24cyclictest352-21runrttasks19:47:530
22634999458,11cyclictest181rcu_preempt19:49:441
22629999439,20cyclictest23770-21seq20:41:510
22629999435,21cyclictest19912-21rm21:38:230
22629999432,26cyclictest9196-21ssh23:08:580
22629999427,25cyclictest0-21swapper/021:20:340
22629999338,18cyclictest22885-21/usr/sbin/munin19:01:420
22629999335,22cyclictest4437-21ssh22:06:500
22629999333,21cyclictest4966-21seq19:45:470
22634999215,46cyclictest13641-21apt-get20:11:411
22634999215,46cyclictest13641-21apt-get20:11:411
22629999235,26cyclictest0-21swapper/023:46:400
22629999235,26cyclictest0-21swapper/023:46:400
22629999235,25cyclictest20256-21runrttasks20:31:450
22629999233,27cyclictest21744-21sh23:30:410
22629999233,21cyclictest18129-21taskset20:25:420
22629999233,19cyclictest10296-21df20:01:430
22634999150,17cyclictest181rcu_preempt23:01:271
22634999144,9cyclictest0-21swapper/119:06:431
22634999144,9cyclictest0-21swapper/119:06:431
22629999136,20cyclictest27084-21ssh22:44:590
22629999134,27cyclictest31993-21sh21:58:050
22629999134,25cyclictest26909-21taskset20:51:490
22629999133,24cyclictest24640-21ssh23:35:220
22629999034,21cyclictest25909-21seq20:47:020
22629999034,21cyclictest25909-21seq20:47:020
22634998957,12cyclictest181rcu_preempt19:16:421
22634998957,12cyclictest181rcu_preempt19:16:421
22629998933,20cyclictest29486-21taskset21:01:120
22629998930,23cyclictest29524-21diskmemload22:33:380
22634998873,10cyclictest7418-21unixbench_multi21:17:011
22634998859,20cyclictest14036-21grep22:22:031
22634998859,20cyclictest14036-21grep22:22:031
22629998830,27cyclictest0-21swapper/020:26:400
22629998829,22cyclictest0-21swapper/019:31:590
22629998829,22cyclictest0-21swapper/019:31:590
22634998731,19cyclictest0-21swapper/123:26:411
22629998735,17cyclictest352-21runrttasks19:26:460
22629998732,20cyclictest12829-21seq20:08:060
22629998719,28cyclictest0-21swapper/019:06:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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