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2025-12-23 - 19:00
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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
Characteristics of the 792 highest latencies:
System rack6slot6 (updated Tue Dec 23, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
638999209920105435,104483cyclictest0-21swapper09:46:270
63899910686553465,53303cyclictest1907-21snmpd08:04:270
63899910681253432,53284cyclictest1994-21sendmail09:07:560
63899910680353408,53330cyclictest9-21ksoftirqd/010:01:010
63899910664753388,53193cyclictest0-21swapper07:18:340
63899910663953455,53088cyclictest9264-21ssh11:12:010
63899910660853455,53153cyclictest0-21swapper08:22:430
63899910658153410,53104cyclictest0-21swapper12:11:290
63899910657853473,53041cyclictest3950irq/9-acpi10:07:530
63899910657853411,53099cyclictest0-21swapper11:24:550
63899910656853386,53088cyclictest0-21swapper11:16:230
63899910651753480,53037cyclictest0-21swapper07:14:030
63899910650953474,53035cyclictest0-21swapper08:10:490
63899910650353469,53034cyclictest0-21swapper07:33:490
63899910646953455,53014cyclictest0-21swapper11:01:180
63899910646653448,53018cyclictest0-21swapper11:45:410
63899910646653410,53056cyclictest0-21swapper08:54:320
63899910643553437,52998cyclictest0-21swapper08:07:080
63899910643253437,52995cyclictest0-21swapper07:36:590
63899910642353431,52992cyclictest0-21swapper10:17:360
63899910640753423,52984cyclictest0-21swapper10:39:020
63899910636153478,52883cyclictest0-21swapper08:57:230
63899910636153432,52837cyclictest9997-21kworker/0:312:29:540
63899910626453390,52808cyclictest0-21swapper07:26:260
63899910624853292,52942cyclictest2468-21ssh10:14:550
63899910621553470,52745cyclictest0-21swapper09:30:020
63899910621453434,52780cyclictest0-21swapper08:19:020
63899910621053175,53024cyclictest10282-21ssh09:37:340
63899910619353424,52769cyclictest0-21swapper07:54:450
63899910619053424,52766cyclictest0-21swapper07:22:550
63899910618853468,52720cyclictest0-21swapper07:58:260
63899910618053453,52727cyclictest0-21swapper10:31:300
63899910607952995,53082cyclictest0-21swapper09:42:560
63899910579653292,52504cyclictest0-21swapper09:50:180
63899910578852984,52801cyclictest31195-21ssh10:56:270
63899910545252906,52543cyclictest10015-21iostat10:25:180
63899910542052983,52430cyclictest13055-21munin-node12:05:270
63899910536653102,52264cyclictest0-21swapper10:46:340
63899910515053031,52117cyclictest0-21swapper12:16:000
6389995393529,53814cyclictest9-21ksoftirqd/010:22:470
6389995392653461,465cyclictest0-21swapper09:17:490
6389995387053430,440cyclictest0-21swapper11:09:410
6389995385753394,463cyclictest0-21swapper11:52:530
6389995385053387,463cyclictest0-21swapper12:01:460
6389995376953463,210cyclictest21147-21ssh10:41:330
6389995372553453,209cyclictest9-21ksoftirqd/009:04:350
6389995369853428,207cyclictest134850irq/9-eth012:37:160
6389995360953434,175cyclictest0-21swapper07:48:430
6389995351113,53405cyclictest134850irq/9-eth009:29:320
6389995336024,53336cyclictest0-21swapper09:55:390
6389995306524,53041cyclictest0-21swapper11:43:410
6389995302725,53002cyclictest0-21swapper08:32:560
63899923471092,1131cyclictest2099-21runrttasks08:36:270
63899923091072,1112cyclictest23495-21diskmemload12:34:250
63899921881077,1111cyclictest0-21swapper11:26:460
63899920081027,860cyclictest0-21swapper11:55:540
63899919371060,785cyclictest0-21swapper07:42:510
63899919291055,780cyclictest0-21swapper08:45:090
63899918681053,724cyclictest0-21swapper11:38:490
6389991854903,937cyclictest0-21swapper09:24:300
63899918421020,755cyclictest26443-21kworker/0:210:53:260
6389991819886,919cyclictest0-21swapper12:23:220
63899918161010,686cyclictest0-21swapper09:11:070
63899915741021,461cyclictest9-21ksoftirqd/008:42:180
63899915461039,443cyclictest11-21rcu_preempt11:31:070
6389991501688,810cyclictest0-21swapper08:25:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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