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2026-05-12 - 20:13
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Tue May 12, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31789212400,13sleep0211rcuc/006:57:020
31429222015,49sleep20-21swapper/206:56:492
3183621898,64sleep131883-21sed06:57:041
32627991054,74cyclictest12586-21apt-get07:36:351
326319910483,11cyclictest0-21swapper/210:26:372
3263699993,74cyclictest2982-21chrt08:46:433
3262799972,53cyclictest17189-21taskset09:16:501
3262799962,77cyclictest30571-21kworker/u19:1+flush-179:007:21:431
32623999674,10cyclictest0-21swapper/008:26:350
32623999673,12cyclictest0-21swapper/007:51:570
32627999429,21cyclictest0-21swapper/110:48:441
32623999458,9cyclictest181rcu_preempt08:01:520
32627999312,45cyclictest31-21ksoftirqd/111:45:271
32623999352,32cyclictest30650-21latency11:26:460
32623999352,32cyclictest30650-21latency11:26:460
32623999272,11cyclictest0-21swapper/009:06:220
32623999221,24cyclictest0-21swapper/011:01:110
32623999171,12cyclictest0-21swapper/008:11:230
32627998817,35cyclictest31-21ksoftirqd/108:10:441
32623998870,10cyclictest5971-21ssh10:46:220
32623998870,10cyclictest5971-21ssh10:46:220
32631998768,10cyclictest0-21swapper/207:11:212
32631998768,10cyclictest0-21swapper/207:11:212
3262799873,50cyclictest21252-21apt-get11:12:081
3262799873,50cyclictest21252-21apt-get11:12:081
32627998641,14cyclictest181rcu_preempt08:21:531
32627998612,47cyclictest31-21ksoftirqd/108:12:141
32627998610,50cyclictest31-21ksoftirqd/110:54:051
3262799853,64cyclictest19676-21snmpd09:22:011
32627998517,36cyclictest31-21ksoftirqd/108:30:241
32623998571,7cyclictest0-21swapper/011:12:160
32623998571,7cyclictest0-21swapper/011:12:160
32623998523,40cyclictest26397-21kworker/u17:0+xprtiod11:37:200
32623998523,40cyclictest26397-21kworker/u17:0+xprtiod11:37:200
32636998417,48cyclictest0-21swapper/309:16:503
32627998415,47cyclictest31-21ksoftirqd/109:04:191
32623998463,15cyclictest12738-21sh10:01:570
32631998363,14cyclictest27749-21fschecks_count12:16:392
32627998348,9cyclictest181rcu_preempt07:26:231
32627998316,34cyclictest31-21ksoftirqd/107:43:181
3262399838,27cyclictest20280-21apt-get09:21:340
32623998355,21cyclictest25356-21latency_hist08:16:220
32627998259,16cyclictest32614-21cyclictest12:21:431
32627998259,16cyclictest32614-21cyclictest12:21:431
32623998268,7cyclictest0-21swapper/011:01:550
32623998259,13cyclictest0-21swapper/007:26:560
32623998215,26cyclictest4390-21rm09:48:340
32631998154,18cyclictest20688-21cut11:11:212
32627998160,8cyclictest181rcu_preempt11:16:411
32627998119,33cyclictest31-21ksoftirqd/108:39:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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