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2026-08-10 - 16:34
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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 highest latencies:
System rack6slot5.osadl.org (updated Mon Aug 10, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
243189998535230,4619cyclictest14305-21kworker/0:007:58:230
243189998404893,4896cyclictest14305-21kworker/0:007:36:530
243189991274784,4339cyclictest12122-21kworker/0:208:07:440
243189991044770,4330cyclictest14305-21kworker/0:007:19:340
243189990894550,4525cyclictest23569-21kworker/0:008:56:510
243189990664751,4311cyclictest14305-21kworker/0:007:27:550
243189989734461,4470cyclictest12122-21kworker/0:208:22:580
243189986764327,4335cyclictest12122-21kworker/0:208:14:140
243189985594403,4152cyclictest14305-21kworker/0:007:23:240
243189982424511,3702cyclictest14305-21kworker/0:007:51:220
243189976803809,3821cyclictest14305-21kworker/0:007:48:490
243189976163894,3707cyclictest14305-21kworker/0:007:14:160
243189975894077,3498cyclictest14305-21kworker/0:007:42:310
243189972953629,3624cyclictest14305-21kworker/0:007:31:270
243189967423625,3067cyclictest23569-21kworker/0:008:42:560
243189966123488,3110cyclictest23569-21kworker/0:008:54:360
243189959703303,2663cyclictest12122-21kworker/0:208:15:480
243189948792410,2426cyclictest23569-21kworker/0:008:32:320
239562808185,203sleep00-21swapper07:07:390
243189954933,455cyclictest10002-21ssh10:33:200
243189949132,165cyclictest15456-21fschecks_time09:31:330
243189948634,439cyclictest5327-21diskmemload10:59:290
243189948534,437cyclictest29860-21ssh11:18:530
243189948533,439cyclictest18736-21ssh10:53:010
243189948533,438cyclictest8169-21ssh11:42:020
243189948533,382cyclictest13541-21runrttasks11:55:310
243189948532,440cyclictest7509-21ssh09:14:570
243189945637,358cyclictest30773-21ssh12:35:040
243189944935,351cyclictest276852sleep011:13:550
243189944418,365cyclictest19713-21ssh12:09:590
243189944232,349cyclictest21273-21ssh12:11:470
243189943738,385cyclictest3707-21df09:05:190
243189943623,0cyclictest30416-21df11:20:280
243189943562,360cyclictest16652-21perl12:01:280
243189942244,374cyclictest2053-21latency_hist11:30:050
243189942070,338cyclictest351950irq/10-yenta11:38:150
243189942058,349cyclictest11-21ksoftirqd/011:49:280
243189942049,311cyclictest26477-21cron08:40:010
243189941937,367cyclictest30842-21munin-node12:35:490
243189941834,370cyclictest11987-21munin-node08:00:360
243189941653,349cyclictest13-21rcuc/010:15:540
243189941637,318cyclictest23512-21apt-get12:17:130
243189941320,333cyclictest5327-21diskmemload10:28:200
243189940927,87cyclictest5327-21diskmemload12:21:380
243189940833,361cyclictest29716-21if_eth010:05:190
243189940746,87cyclictest27278-21strings12:26:010
243189940453,338cyclictest351950irq/10-yenta11:30:100
243189940422,320cyclictest7775-21ntp_states09:15:240
243189940341,348cyclictest0-21swapper09:59:220
243189940339,303cyclictest5012-21kworker/u2:310:22:500
243189940242,87cyclictest0-21swapper11:09:540
243189940232,356cyclictest13851-21ssh09:28:470
243189940136,351cyclictest22770-21timerwakeupswit11:01:360
243189940022,317cyclictest18128-21kworker/u2:209:41:540
243189939732,351cyclictest29808-21chrt08:46:300
243189939635,174cyclictest5327-21diskmemload10:11:210
243189939534,302cyclictest11429-21ssh09:22:390
243189939522,93cyclictest0-21swapper09:37:250
243189939235,345cyclictest11010-21sed10:35:410
243189939221,312cyclictest21938-21missed_timers09:46:210
243189939215,316cyclictest14975-21ntpq10:45:220
243189938873,302cyclictest24299-21cstates09:51:350
243189938734,339cyclictest12944-21ssh11:54:030
243189938733,340cyclictest27436-21ssh10:00:120
243189938326,342cyclictest13566-21kernelversion10:41:060
243189937632,320cyclictest22754-21cron08:30:010
243189937323,288cyclictest2009-21sshd09:00:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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