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2026-03-16 - 02:26
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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 100 highest latencies:
System rack6slot5.osadl.org (updated Mon Mar 16, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255749997565141,4611cyclictest5905-21kworker/0:219:44:310
255749988194683,4124cyclictest5905-21kworker/0:220:24:020
255749987254634,4080cyclictest379-21kworker/0:019:28:090
255749986574612,4042cyclictest379-21kworker/0:019:12:590
255749986324365,4244cyclictest5924-21kworker/0:021:12:380
255749983604499,3846cyclictest2591-21kworker/0:222:11:010
255749982534292,3937cyclictest5924-21kworker/0:021:26:430
255749981544302,3837cyclictest379-21kworker/0:019:22:180
255749979414218,3708cyclictest13234-21kworker/0:123:43:330
255749978964271,3582cyclictest5905-21kworker/0:220:31:540
255749977554117,3615cyclictest5924-21kworker/0:021:55:330
255749976164130,3443cyclictest19841-21kworker/0:000:08:130
255749975063846,3646cyclictest5905-21kworker/0:220:05:000
255749974264073,3338cyclictest5924-21kworker/0:021:40:490
255749973653957,3397cyclictest5905-21kworker/0:219:51:010
255749972203634,3543cyclictest2591-21kworker/0:222:23:430
255749971703809,3318cyclictest5924-21kworker/0:021:52:530
255749970063844,3147cyclictest5924-21kworker/0:021:24:490
255749969393741,3187cyclictest5905-21kworker/0:220:06:350
255749968913717,3162cyclictest5905-21kworker/0:220:14:550
255749966473549,3047cyclictest5905-21kworker/0:220:49:540
255749966103509,3061cyclictest5924-21kworker/0:021:38:490
255749965643557,2996cyclictest5905-21kworker/0:220:42:490
255749965623556,2994cyclictest5905-21kworker/0:219:58:400
255749965453328,3186cyclictest13234-21kworker/0:123:46:330
255749965013569,2918cyclictest5905-21kworker/0:220:58:460
255749964823519,2959cyclictest379-21kworker/0:019:19:500
255749964743509,2953cyclictest379-21kworker/0:019:33:070
255749964463495,2939cyclictest379-21kworker/0:019:38:370
255749964403504,2893cyclictest5672-21kworker/0:223:24:110
255749964013527,2851cyclictest5905-21kworker/0:219:49:240
255749963973481,2912cyclictest5905-21kworker/0:220:51:280
255749963643337,2981cyclictest5672-21kworker/0:223:26:130
255749962903486,2789cyclictest16585-21kworker/0:223:04:300
255749961933251,2928cyclictest16585-21kworker/0:222:46:050
255749960803384,2653cyclictest32531-21kworker/0:200:29:310
255749960463252,2751cyclictest16585-21kworker/0:222:43:200
255749960053227,2727cyclictest5924-21kworker/0:022:08:590
255749958613247,2592cyclictest2591-21kworker/0:222:26:540
255749947224666,42cyclictest32531-21kworker/0:200:31:240
255749946334522,97cyclictest16585-21kworker/0:223:06:320
255749943614278,33cyclictest5924-21kworker/0:021:09:220
255749942934236,35cyclictest5905-21kworker/0:221:01:140
255749941722335,1822cyclictest19841-21kworker/0:000:11:230
252192774186,201sleep00-21swapper19:07:410
255749949732,449cyclictest30302-21ntp_states00:15:210
255749948533,439cyclictest6327-21diskmemload23:55:500
255749948332,438cyclictest6327-21diskmemload22:16:120
255749948245,195cyclictest11011-21ssh21:18:240
255749947331,371cyclictest23126-21runrttasks00:00:250
255749947238,363cyclictest6327-21diskmemload22:38:170
255749946133,89cyclictest31065-21grep22:00:290
255749944633,89cyclictest6327-21diskmemload22:58:440
255749940636,356cyclictest11-21ksoftirqd/023:53:360
255749940634,358cyclictest13450-21kworker/u2:021:32:190
255749940113,374cyclictest3619-21seq23:19:390
255749940038,188cyclictest11-21ksoftirqd/023:12:470
255749939732,350cyclictest23438-21smartctl22:51:110
255749939731,351cyclictest24019-21cut21:45:360
255749939434,360cyclictest0-21swapper20:35:080
255749939132,347cyclictest6327-21diskmemload23:32:390
255749939119,359cyclictest22621-21kworker/u2:100:36:070
255749938934,340cyclictest6327-21diskmemload22:33:270
255749938917,87cyclictest3746-21avahi-daemon00:20:270
255749938835,339cyclictest6327-21diskmemload23:36:130
255749936433,89cyclictest21966-21munin-node20:25:350
255749933060,88cyclictest19915-21seq20:19:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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