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2026-04-03 - 04:38
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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 Apr 03, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
551822520,33sleep2371rcuc/218:59:242
551822520,33sleep2371rcuc/218:59:242
589229910,62sleep05931-21awk18:59:400
589229910,62sleep05931-21awk18:59:400
6681999425,29cyclictest39-21ksoftirqd/221:29:012
6681999425,29cyclictest39-21ksoftirqd/221:29:012
6675999474,14cyclictest3399-21kworker/u19:2-nfsiod23:33:571
6675999474,14cyclictest3399-21kworker/u19:2-nfsiod23:33:571
6681999369,8cyclictest181rcu_preempt23:39:382
6681999369,8cyclictest181rcu_preempt23:39:382
6681999360,9cyclictest181rcu_preempt19:42:032
6681999277,10cyclictest6655-21cyclictest22:39:282
6675999264,8cyclictest181rcu_preempt19:19:321
6681999017,42cyclictest39-21ksoftirqd/200:24:212
6681998956,7cyclictest181rcu_preempt21:08:152
6675998963,8cyclictest181rcu_preempt22:38:501
6675998963,8cyclictest181rcu_preempt22:38:501
6675998813,45cyclictest31-21ksoftirqd/122:06:571
6675998813,45cyclictest31-21ksoftirqd/122:06:571
6681998737,29cyclictest58-21kcompactd023:12:392
6681998737,29cyclictest58-21kcompactd023:12:392
6675998664,8cyclictest181rcu_preempt23:12:531
6675998664,8cyclictest181rcu_preempt23:12:531
6675998622,26cyclictest0-21swapper/121:20:001
6663998664,16cyclictest31187-21ssh00:13:570
6681998561,8cyclictest181rcu_preempt23:04:502
6681998561,8cyclictest181rcu_preempt23:04:502
6681998548,26cyclictest3399-21kworker/u19:2+nfsiod00:29:182
6681998514,42cyclictest39-21ksoftirqd/221:29:162
6675998562,8cyclictest181rcu_preempt23:40:461
6675998562,8cyclictest181rcu_preempt23:40:461
6675998561,17cyclictest6655-21cyclictest19:34:341
6675998561,17cyclictest6655-21cyclictest19:34:341
6675998548,9cyclictest181rcu_preempt21:41:161
6675998548,12cyclictest181rcu_preempt20:54:321
577628510,47sleep15796-21/usr/sbin/munin18:59:371
577628510,47sleep15796-21/usr/sbin/munin18:59:371
6681998459,12cyclictest181rcu_preempt23:00:462
6681998448,10cyclictest181rcu_preempt20:41:042
6681998448,10cyclictest181rcu_preempt20:41:042
6675998468,10cyclictest21889-21proc_pri22:09:311
6675998461,15cyclictest8671-21idleruntime-cro21:48:571
6675998461,15cyclictest8671-21idleruntime-cro21:48:571
6663998456,20cyclictest17134-21idleruntime-cro21:08:570
6681998361,8cyclictest181rcu_preempt20:59:332
6681998354,11cyclictest181rcu_preempt19:39:022
6681998346,21cyclictest0-21swapper/219:44:362
6681998343,17cyclictest6655-21cyclictest23:53:432
6675998341,24cyclictest20194-21unin-run21:13:591
6675998336,7cyclictest181rcu_preempt20:52:541
6663998321,29cyclictest3659-21sh23:27:260
6663998320,27cyclictest22777-21ssh22:10:520
6681998252,14cyclictest181rcu_preempt20:33:582
6681998245,17cyclictest0-21swapper/223:36:502
6675998259,15cyclictest6655-21cyclictest20:34:251
6675998250,8cyclictest181rcu_preempt23:54:021
6675998250,7cyclictest181rcu_preempt22:32:161
6675998236,22cyclictest6655-21cyclictest22:45:571
6675998236,22cyclictest6655-21cyclictest22:45:571
6675998230,9cyclictest0-21swapper/123:09:031
6675998230,9cyclictest0-21swapper/123:09:031
6663998266,10cyclictest27483-21http23:14:030
6663998264,12cyclictest10331-21latency_hist23:38:590
6663998262,13cyclictest22420-21latency_hist23:59:000
6681998161,14cyclictest11197-21fschecks_time20:54:182
6681998147,8cyclictest181rcu_preempt00:12:422
668199813,36cyclictest39-21ksoftirqd/222:30:502
6681998129,16cyclictest181rcu_preempt21:18:412
6681998126,16cyclictest181rcu_preempt23:48:582
6675998161,7cyclictest181rcu_preempt00:30:381
6675998158,7cyclictest181rcu_preempt21:33:131
6675998158,15cyclictest1655-21cstates23:24:131
6675998150,8cyclictest181rcu_preempt22:02:251
6675998140,12cyclictest181rcu_preempt00:03:301
6681998046,9cyclictest181rcu_preempt20:47:482
6681998046,9cyclictest181rcu_preempt20:47:482
6681998046,8cyclictest181rcu_preempt20:06:492
668199802,43cyclictest39-21ksoftirqd/220:29:002
668199802,43cyclictest39-21ksoftirqd/220:29:002
6675998049,8cyclictest181rcu_preempt21:26:571
6675998049,8cyclictest181rcu_preempt21:26:571
667599803,54cyclictest28007-21apt-get23:14:201
6675998023,9cyclictest181rcu_preempt22:17:451
6663998015,27cyclictest0-21swapper/022:54:070
6681997961,12cyclictest31786-21fschecks_count00:14:182
6681997955,13cyclictest0-21swapper/223:59:002
6681997948,13cyclictest181rcu_preempt21:53:142
6681997948,13cyclictest181rcu_preempt21:53:142
6681997944,8cyclictest181rcu_preempt22:20:452
6675997957,7cyclictest181rcu_preempt23:34:341
6675997956,8cyclictest181rcu_preempt22:42:341
6675997956,14cyclictest12232-21acpi21:54:071
6675997956,14cyclictest12232-21acpi21:54:071
6675997947,21cyclictest9189-21latency_hist20:49:001
6675997947,21cyclictest9189-21latency_hist20:49:001
6675997943,15cyclictest181rcu_preempt23:45:151
6675997941,12cyclictest181rcu_preempt23:51:391
6675997938,18cyclictest0-21swapper/119:14:021
6663997962,10cyclictest23095-21ssh23:59:260
668199783,47cyclictest12675-21grep19:19:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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