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2025-11-30 - 19:18
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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 Sun Nov 30, 2025 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30764213917,82sleep030795-21idleruntime-cro07:08:500
309259910184,11cyclictest20042-21apt-get08:14:052
30925999772,19cyclictest23549-21idleruntime-cro08:23:502
30918999667,19cyclictest30399-21latency_hist08:43:531
30925999555,35cyclictest30904-21cyclictest10:38:512
30925999555,35cyclictest30904-21cyclictest10:38:512
30925999446,41cyclictest11250-21sh12:14:242
30910999453,21cyclictest181rcu_preempt10:05:490
30925999343,41cyclictest26729-21modprobe08:33:502
30925999340,45cyclictest0-21swapper/211:54:042
30910999167,17cyclictest1124-21latency_hist08:53:520
30910999167,17cyclictest1124-21latency_hist08:53:520
30910999054,30cyclictest20409-21sh11:34:090
30910999035,14cyclictest181rcu_preempt11:29:120
30910998967,16cyclictest23096-21sh11:39:100
30925998849,29cyclictest5540-21kworker/u19:0+nfsiod12:25:272
30918998872,11cyclictest20529-21acpi08:14:031
30910998761,18cyclictest2148-21latency_hist07:18:530
30910998761,18cyclictest2148-21latency_hist07:18:530
3091099873,48cyclictest28549-21ssh10:49:220
3091099873,48cyclictest28549-21ssh10:49:220
30918998668,12cyclictest292-21dbus-daemon08:13:511
30918998664,16cyclictest15091-21threads09:24:261
30918998661,18cyclictest691-21cron07:18:501
30918998661,18cyclictest691-21cron07:18:501
30910998656,21cyclictest6610-21kernelversion09:09:160
30925998541,38cyclictest9507-21switchtime07:39:272
30910998550,12cyclictest181rcu_preempt08:14:320
30925998465,13cyclictest32113-21open_files10:54:372
30925998465,13cyclictest32113-21open_files10:54:372
30925998464,14cyclictest7316-21apt12:08:492
30925998464,14cyclictest7316-21apt12:08:492
30918998460,13cyclictest0-21swapper/109:59:131
30918998460,13cyclictest0-21swapper/109:59:131
3091899843,44cyclictest28456-21apt-get10:49:091
3091899843,44cyclictest28456-21apt-get10:49:091
3091899843,35cyclictest17715-21cstates11:29:071
30910998448,9cyclictest181rcu_preempt11:23:210
30910998448,9cyclictest181rcu_preempt11:23:210
3091099843,52cyclictest25854-21memory09:44:160
30925998322,51cyclictest6182-21awk09:09:012
30918998361,16cyclictest11835-21apt-key11:18:521
3091899833,60cyclictest7316-21apt-get12:09:041
3091899833,60cyclictest7316-21apt-get12:09:041
3091899832,62cyclictest11015-21ssh12:14:071
30910998361,14cyclictest207-21systemd-journal08:28:020
3092599826,65cyclictest86-21kswapd010:49:182
3092599826,65cyclictest86-21kswapd010:49:182
30918998265,10cyclictest0-21swapper/108:19:131
30918998262,11cyclictest0-21swapper/111:20:061
30918998262,11cyclictest0-21swapper/111:20:061
30918998259,9cyclictest0-21swapper/109:54:141
30918998244,29cyclictest32696-21kworker/u18:2+nfsiod12:19:591
3091899823,49cyclictest31487-21ssh10:54:141
3091899823,49cyclictest31487-21ssh10:54:141
30910998271,6cyclictest0-21swapper/008:44:580
30910998271,6cyclictest0-21swapper/008:44:580
30910998254,11cyclictest181rcu_preempt07:33:510
3092599814,65cyclictest5317-21kworker/u19:1+flush-179:007:59:272
30925998139,37cyclictest0-21swapper/209:19:112
30925998134,40cyclictest0-21swapper/207:54:242
30918998165,8cyclictest0-21swapper/109:23:521
30918998149,12cyclictest58-21kcompactd009:08:511
30910998155,18cyclictest29984-21latency_hist08:43:530
30910998151,15cyclictest181rcu_preempt10:39:570
30910998148,13cyclictest181rcu_preempt11:59:280
30910998131,9cyclictest181rcu_preempt10:15:550
30925998060,11cyclictest0-21swapper/208:43:532
30925998038,37cyclictest0-21swapper/211:38:532
30925998037,33cyclictest0-21swapper/209:48:532
30918998064,9cyclictest3669-21modprobe07:23:491
30918998064,9cyclictest3669-21modprobe07:23:491
30918998059,11cyclictest0-21swapper/108:45:071
30918998059,11cyclictest0-21swapper/108:45:071
3091899802,29cyclictest23243-21cstates10:39:071
30910998053,18cyclictest10430-21latency_hist12:13:540
30910998053,18cyclictest10430-21latency_hist12:13:540
30910998046,12cyclictest181rcu_preempt09:08:520
30925997963,9cyclictest0-21swapper/209:51:482
30925997933,37cyclictest0-21swapper/211:18:532
30925997930,38cyclictest0-21swapper/208:04:342
30918997961,12cyclictest30904-21cyclictest09:14:271
30918997961,12cyclictest30904-21cyclictest09:14:271
30918997959,10cyclictest0-21swapper/109:34:061
30918997951,7cyclictest181rcu_preempt11:54:251
30910997948,13cyclictest181rcu_preempt12:29:110
30910997946,12cyclictest181rcu_preempt12:14:260
30910997946,10cyclictest181rcu_preempt08:29:290
3091099794,41cyclictest355-21runrttasks10:27:250
30910997944,17cyclictest181rcu_preempt07:58:540
3091099793,48cyclictest15-21ksoftirqd/009:52:030
3091099793,44cyclictest20025-21cron08:13:490
30910997931,8cyclictest181rcu_preempt10:44:080
30925997858,14cyclictest0-21swapper/209:18:542
30925997838,33cyclictest0-21swapper/211:04:192
30925997837,33cyclictest0-21swapper/209:34:152
30925997837,32cyclictest0-21swapper/212:09:302
30925997837,32cyclictest0-21swapper/212:09:302
30925997831,39cyclictest0-21swapper/208:34:262
30925997831,39cyclictest0-21swapper/208:34:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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