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2026-08-25 - 14:03
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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 792 highest latencies:
System rack6slot5.osadl.org (updated Tue Aug 25, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
299749997055140,4555cyclictest28877-21kworker/0:119:44:170
299749993374659,4664cyclictest12191-21kworker/0:021:25:070
299749992404822,4408cyclictest28877-21kworker/0:119:19:420
299749991044758,4342cyclictest28877-21kworker/0:119:36:090
299749988964427,4455cyclictest18343-21kworker/0:120:32:200
299749988924551,4331cyclictest18343-21kworker/0:120:16:480
299749981794355,3810cyclictest6906-21kworker/0:222:12:550
299749981184025,4042cyclictest28877-21kworker/0:119:52:220
299749978954002,3841cyclictest28877-21kworker/0:119:28:110
299749978494095,3732cyclictest23413-21kworker/0:021:50:110
299749977913882,3895cyclictest28877-21kworker/0:119:14:110
299749977374062,3661cyclictest15052-21kworker/0:122:46:450
299749974703782,3638cyclictest28877-21kworker/0:119:22:520
299749974483981,3453cyclictest18343-21kworker/0:120:28:330
299749971993838,3301cyclictest15052-21kworker/0:122:43:520
299749968593389,3420cyclictest18343-21kworker/0:120:47:020
299749967183336,3332cyclictest18343-21kworker/0:120:03:350
299749965073472,3021cyclictest12191-21kworker/0:021:23:090
299749961073320,2773cyclictest23413-21kworker/0:021:47:200
299749960623331,2720cyclictest18343-21kworker/0:120:05:090
299749960293220,2799cyclictest18343-21kworker/0:121:03:130
299749957943159,2621cyclictest28877-21kworker/0:119:34:340
294262809183,177sleep00-21swapper19:06:070
299749950043,444cyclictest31163-21kworker/0:000:24:010
299749950034,452cyclictest10653-21diskmemload00:31:010
299749949757,260cyclictest6200-21sh23:20:010
299749948936,439cyclictest10653-21diskmemload22:57:000
299749948834,440cyclictest28810-21ssh00:15:560
299749948834,439cyclictest10653-21diskmemload21:42:320
299749948734,439cyclictest10653-21diskmemload00:11:540
299749948633,439cyclictest21633-21ssh23:59:010
299749948633,439cyclictest10653-21diskmemload00:25:100
299749948432,439cyclictest7898-21ssh23:22:220
299749947833,431cyclictest10653-21diskmemload23:32:470
299749946834,374cyclictest12-21rcu_preempt20:20:200
299749946631,374cyclictest20729-21mailstats20:10:130
299749946532,433cyclictest0-21swapper21:12:590
299749945632,364cyclictest10653-21diskmemload22:33:080
299749944932,358cyclictest17342-21ssh23:44:530
299749942729,126cyclictest9162-21df_abs23:25:390
299749942037,214cyclictest10653-21diskmemload00:08:500
299749941945,88cyclictest26125-21kernelversion22:51:000
299749941838,367cyclictest0-21swapper23:49:500
299749941035,361cyclictest3135-21ssh22:01:420
299749940851,343cyclictest10653-21diskmemload21:35:360
299749940836,312cyclictest20019-21kworker/0:121:31:300
299749940830,365cyclictest10898-21kworker/u2:322:23:300
299749940733,360cyclictest19247-21runrttasks22:36:300
299749940654,169cyclictest26733-21kworker/u2:123:00:380
299749940632,374cyclictest0-21swapper19:58:100
299749940533,88cyclictest14824-21ssh21:18:400
299749940532,373cyclictest0-21swapper22:08:200
299749940524,208cyclictest5900-21kworker/u2:122:28:350
299749940519,373cyclictest4924-21runrttasks23:40:010
299749940432,358cyclictest10679-21ssh22:17:580
299749940332,358cyclictest3467-21ssh23:13:080
299749940054,164cyclictest10653-21diskmemload00:36:040
299749940048,339cyclictest1308-21ssh23:08:290
299749939937,304cyclictest0-21swapper20:37:080
299749939840,345cyclictest351950irq/10-yenta23:54:240
299749939757,281cyclictest17748-21kworker/u2:000:04:360
299749939550,286cyclictest4305-21snmpd21:59:450
299749938834,354cyclictest0-21swapper20:58:150
299749938525,360cyclictest0-21swapper19:48:460
299749938338,247cyclictest18343-21kworker/0:121:05:310
299749938325,296cyclictest31935-21munin-node20:40:130
299749937414,88cyclictest13-21rcuc/020:50:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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