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2026-05-24 - 07:28
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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 rackcslot2.osadl.org (updated Sun May 24, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296328053,22sleep10-21swapper/119:05:481
284026947,17sleep00-21swapper/019:04:300
65732570,0sleep00-21swapper/022:19:100
283042470,1sleep028301-21ssh22:49:030
3440993733,4cyclictest0-21swapper/019:23:050
344199300,0cyclictest0-21swapper/119:50:141
3440993029,1cyclictest31706-21apache223:03:310
3440992928,0cyclictest0-21swapper/021:09:280
3440992921,6cyclictest744-21snmpd00:05:110
344199287,20cyclictest0-21swapper/123:49:501
3441992810,17cyclictest0-21swapper/122:16:181
344199280,27cyclictest0-21swapper/119:54:111
3440992810,1cyclictest0-21swapper/021:24:220
344099280,24cyclictest0-21swapper/021:21:300
3441992723,3cyclictest31690-21apache200:36:291
344199270,1cyclictest0-21swapper/123:40:541
3440992710,16cyclictest0-21swapper/020:27:130
3440992710,14cyclictest0-21swapper/019:39:040
3440992710,0cyclictest0-21swapper/023:19:050
344199260,2cyclictest6200-21grep23:44:131
3440992610,14cyclictest100250irq/107-eth1-rx22:08:570
344199257,17cyclictest0-21swapper/119:36:301
3441992518,6cyclictest31706-21apache221:28:541
344199250,25cyclictest0-21swapper/122:31:241
344199250,25cyclictest0-21swapper/120:48:161
344099252,3cyclictest0-21swapper/022:44:580
3440992518,4cyclictest0-21swapper/021:39:070
3440992511,5cyclictest0-21swapper/023:59:060
344099250,21cyclictest0-21swapper/019:14:470
344199249,14cyclictest0-21swapper/119:48:181
3441992418,5cyclictest31690-21apache222:44:111
3441992417,4cyclictest31706-21apache221:54:241
3441992410,2cyclictest0-21swapper/121:24:051
3441992410,2cyclictest0-21swapper/100:19:431
344099241,8cyclictest0-21swapper/021:46:390
3440992416,5cyclictest100150irq/106-eth1-rx22:39:030
344199239,12cyclictest0-21swapper/119:28:561
3441992321,1cyclictest0-21swapper/121:36:241
3441992318,5cyclictest31690-21apache219:15:091
3441992318,4cyclictest31690-21apache221:46:271
3441992316,6cyclictest24972-21ssh00:11:141
344099238,12cyclictest0-21swapper/019:26:350
3441992217,3cyclictest31706-21apache222:11:021
3441992215,2cyclictest8019-21sh21:39:031
3441992210,4cyclictest0-21swapper/100:29:031
344199220,1cyclictest0-21swapper/121:00:441
3440992222,0cyclictest0-21swapper/000:28:450
3440992212,6cyclictest16555-21ssh22:33:190
3440992212,6cyclictest100150irq/106-eth1-rx21:16:340
3440992211,8cyclictest6461-1kworker/u5:223:06:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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