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2026-05-02 - 16:07
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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
Characteristics of the 50 highest latencies:
System rackcslot4.osadl.org (updated Sat May 02, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312147723730,7sleep1251rcuc/107:05:221
31223172267206,47sleep00-21swapper/007:05:430
328653221420,3sleep10-21swapper/111:40:251
179699640,3rtkit-daemon1795-21rtkit-daemon09:32:510
32174462500,3sleep03216905-21apt-get10:10:020
31253942500,6sleep1251rcuc/107:15:041
33180182420,2sleep00-21swapper/012:23:350
179699410,5rtkit-daemon0-21swapper/009:44:380
179699390,23rtkit-daemon3250526-21chrt10:52:550
312284199380,4cyclictest3178829-21sendmail09:20:001
179699350,4rtkit-daemon1795-21rtkit-daemon07:34:180
179699320,3rtkit-daemon1795-21rtkit-daemon07:39:520
312284199308,11cyclictest26-21ksoftirqd/112:20:511
179699300,5rtkit-daemon3166833-21cron09:00:000
3122836992926,2cyclictest66950irq/132-enp2s010:16:460
312283699292,21cyclictest3292718-21apt-get11:50:130
3122836992911,3cyclictest31302042sleep007:25:220
312284199284,3cyclictest3170777-21diskmemload12:32:171
312284199282,5cyclictest3244230-21apt-get10:45:131
3122836992825,2cyclictest66950irq/132-enp2s012:05:470
3122836992812,10cyclictest3209814-21apt-get10:00:130
312284199275,7cyclictest26-21ksoftirqd/110:16:161
3122841992712,4cyclictest3170777-21diskmemload10:53:381
312283699276,3cyclictest141rcu_preempt10:45:250
312283699273,17cyclictest3190892-21apt-get09:35:150
3122836992724,2cyclictest66950irq/132-enp2s010:43:020
3122836992715,8cyclictest3270408-21apt-get11:20:120
3122836992713,7cyclictest3311404-21apt-get12:15:140
312284199261,3cyclictest141rcu_preempt07:32:541
3122841992613,3cyclictest3170777-21diskmemload12:15:041
312284199261,20cyclictest3194471-21apt-get09:40:111
312283699262,18cyclictest3179117-21apt-get09:20:130
3122836992614,7cyclictest66950irq/132-enp2s010:55:120
3122836992612,7cyclictest3322942-21apt-get12:30:140
312284199257,5cyclictest0-21swapper/112:11:151
312284199256,10cyclictest26-21ksoftirqd/108:45:141
312284199253,4cyclictest26-21ksoftirqd/109:45:211
3122841992517,6cyclictest1795-21rtkit-daemon07:43:411
3122841992511,4cyclictest3170777-21diskmemload10:43:151
3122841992511,3cyclictest3170777-21diskmemload12:25:231
3122841992510,4cyclictest3170777-21diskmemload09:10:591
312284199250,23cyclictest3225537-21ssh10:20:091
312283699254,2cyclictest3170777-21diskmemload12:29:140
312283699253,14cyclictest3232996-21apt-get10:30:130
312283699252,16cyclictest3213582-21apt-get10:05:140
312283699252,16cyclictest3167071-21apt-get09:00:130
32986442240,4sleep03298652-21ssh11:57:100
312284199246,11cyclictest0-21swapper/109:58:081
312284199245,5cyclictest26-21ksoftirqd/108:01:391
3122841992417,5cyclictest1795-21rtkit-daemon08:36:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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