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2026-06-26 - 22:37
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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 Jun 26, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4940215312,114sleep00-21swapper/006:54:260
4546210710,66sleep14030-21apt-get06:53:411
6035999648,9cyclictest181rcu_preempt09:38:412
45992967,58sleep24648-21/usr/sbin/munin06:54:112
6014999373,12cyclictest277-21dbus-daemon10:28:160
6025999157,15cyclictest181rcu_preempt09:06:481
6025999157,15cyclictest181rcu_preempt09:06:481
6025998838,8cyclictest0-21swapper/111:51:421
601499887,37cyclictest15-21ksoftirqd/011:41:040
6035998659,18cyclictest1353-21idleruntime-cro08:23:162
6035998659,18cyclictest1353-21idleruntime-cro08:23:162
6014998615,40cyclictest15-21ksoftirqd/011:03:170
6035998543,7cyclictest181rcu_preempt07:59:322
6035998543,11cyclictest181rcu_preempt07:33:432
6035998541,9cyclictest181rcu_preempt11:25:332
6025998549,10cyclictest181rcu_preempt09:34:011
6035998454,8cyclictest181rcu_preempt10:36:172
6035998454,13cyclictest181rcu_preempt10:53:422
6035998430,32cyclictest0-21swapper/208:23:422
6025998469,11cyclictest6004-21cyclictest07:58:391
6025998457,10cyclictest181rcu_preempt12:03:431
6025998438,12cyclictest23227-21proc_pri10:08:491
6025998438,12cyclictest23227-21proc_pri10:08:491
6035998361,16cyclictest2374-21systemd-journal11:19:422
6035998346,9cyclictest181rcu_preempt08:43:192
601499833,34cyclictest15-21ksoftirqd/009:58:180
6014998329,23cyclictest15-21ksoftirqd/011:11:040
6035998245,11cyclictest181rcu_preempt09:38:082
6035998237,13cyclictest181rcu_preempt11:36:442
6014998261,15cyclictest300-21rs:main0
6014998233,24cyclictest181rcu_preempt10:07:170
601499823,25cyclictest15-21ksoftirqd/010:13:280
601499822,52cyclictest19676-21snmpd10:58:190
6025998147,10cyclictest181rcu_preempt10:46:391
6035998051,12cyclictest181rcu_preempt07:53:412
6035998049,8cyclictest181rcu_preempt12:06:532
6035998049,8cyclictest181rcu_preempt07:43:442
6025998058,14cyclictest28131-21latency_hist09:23:201
6025998055,13cyclictest0-21swapper/107:58:181
6025998052,11cyclictest181rcu_preempt08:03:451
6025998041,11cyclictest181rcu_preempt08:43:341
6014998059,14cyclictest16712-21idleruntime-cro10:53:150
6035997953,19cyclictest20071-21sh09:09:272
6035997946,8cyclictest181rcu_preempt11:59:202
6035997944,9cyclictest181rcu_preempt10:40:342
6035997944,8cyclictest181rcu_preempt10:29:322
6035997944,8cyclictest181rcu_preempt10:29:322
6035997938,7cyclictest181rcu_preempt10:03:412
6035997931,12cyclictest181rcu_preempt07:28:332
6025997947,10cyclictest181rcu_preempt07:23:301
6025997943,8cyclictest181rcu_preempt09:48:111
6025997943,16cyclictest18365-21kworker/u17:0+xprtiod10:23:531
6025997942,8cyclictest30841-21rm12:11:181
602599793,56cyclictest21827-21apt-get09:13:321
6025997935,12cyclictest0-21swapper/109:28:531
602599792,61cyclictest13267-21ssh08:58:321
6014997960,13cyclictest300-21rs:main0
6014997959,14cyclictest28772-21fschecks_time10:18:370
6014997950,19cyclictest8884-21cat08:43:520
6014997938,17cyclictest181rcu_preempt10:12:340
6014997938,17cyclictest181rcu_preempt10:12:340
601499792,32cyclictest7946-21idleruntime-cro11:33:160
601499792,32cyclictest7946-21idleruntime-cro11:33:160
6035997850,8cyclictest39-21ksoftirqd/209:17:412
6035997848,9cyclictest181rcu_preempt11:13:382
6035997848,9cyclictest181rcu_preempt11:13:382
6035997848,10cyclictest181rcu_preempt10:14:212
6035997836,16cyclictest181rcu_preempt10:20:082
6035997834,11cyclictest0-21swapper/210:46:202
6035997822,18cyclictest0-21swapper/210:23:282
6035997821,28cyclictest6004-21cyclictest11:28:312
6035997821,28cyclictest6004-21cyclictest11:28:312
6025997860,11cyclictest0-21swapper/108:28:201
6025997856,15cyclictest58-21kcompactd008:20:181
6025997856,15cyclictest58-21kcompactd008:20:181
6025997831,9cyclictest0-21swapper/109:38:321
601499787,39cyclictest15-21ksoftirqd/011:37:240
601499784,35cyclictest15-21ksoftirqd/012:12:220
6035997755,15cyclictest298-21in:imuxsock07:23:172
6035997755,15cyclictest298-21in:imuxsock07:23:172
6035997752,8cyclictest181rcu_preempt12:14:052
6035997752,8cyclictest181rcu_preempt12:14:052
6035997736,7cyclictest181rcu_preempt09:51:422
6035997736,7cyclictest181rcu_preempt09:51:422
6025997756,11cyclictest0-21swapper/108:08:321
6025997743,9cyclictest16311-21/usr/sbin/munin07:28:531
6025997740,9cyclictest181rcu_preempt07:18:471
6025997737,8cyclictest181rcu_preempt11:19:541
6014997758,13cyclictest7662-21latency_hist10:38:180
6014997755,14cyclictest11704-21ntp_offset10:43:450
601499772,39cyclictest15-21ksoftirqd/007:18:190
6035997645,7cyclictest181rcu_preempt07:03:552
6035997639,8cyclictest181rcu_preempt10:52:442
6035997631,10cyclictest181rcu_preempt07:48:372
6035997631,10cyclictest181rcu_preempt07:48:372
6025997657,9cyclictest0-21swapper/111:43:201
6025997657,7cyclictest181rcu_preempt10:37:361
6025997642,9cyclictest181rcu_preempt11:15:181
6025997642,9cyclictest181rcu_preempt11:15:181
6014997647,13cyclictest23269-21grep09:14:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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