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2026-08-18 - 09:01
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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 rackdslot4.osadl.org (updated Tue Aug 18, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206173,22phc2sys0-21swapper/319:09:443
138591206173,22phc2sys0-21swapper/319:09:433
291172205173,22sleep10-21swapper/119:08:351
291172205173,22sleep10-21swapper/119:08:351
290262200167,22sleep20-21swapper/219:07:232
290262200167,22sleep20-21swapper/219:07:232
290562199166,22sleep00-21swapper/019:07:450
290562199166,22sleep00-21swapper/019:07:450
2371321650,7sleep22952299cyclictest23:20:012
138491790,1ptp4l11043-21switchtime19:35:243
76482610,6sleep32952399cyclictest22:45:193
2952299590,22cyclictest2539-21cat20:25:192
2952299590,20cyclictest32394-21df_abs19:15:142
2952299550,29cyclictest25630-21awk23:20:262
138491530,1ptp4l401ktimersoftd/300:15:183
29523995233,16cyclictest41-21ksoftirqd/319:20:003
2952299512,19cyclictest9126-21cat23:55:012
195522510,3sleep20-21swapper/200:15:132
50798470,1rtkit-daemon0-21swapper/021:42:530
138491470,0ptp4l401ktimersoftd/323:32:403
29523994532,11cyclictest41-21ksoftirqd/320:55:013
29523994531,12cyclictest41-21ksoftirqd/320:44:593
138491450,8ptp4l401ktimersoftd/323:15:243
29522994439,3cyclictest21170-21cron23:15:002
29522994439,3cyclictest21170-21cron23:15:002
138491430,1ptp4l401ktimersoftd/322:25:213
138491430,0ptp4l401ktimersoftd/300:34:183
138491420,0ptp4l401ktimersoftd/323:49:473
138491420,0ptp4l401ktimersoftd/323:08:433
29521994134,4cyclictest25-21ksoftirqd/120:00:131
29523994035,2cyclictest41-21ksoftirqd/300:00:013
2952299400,20cyclictest5536-21awk23:45:212
138491400,2ptp4l121rcu_preempt20:10:143
2952299390,19cyclictest14212-21cstates23:00:132
29520993934,3cyclictest9-21ksoftirqd/022:25:010
29520993934,3cyclictest9-21ksoftirqd/019:20:000
29523993832,3cyclictest41-21ksoftirqd/322:05:003
29522993831,4cyclictest33-21ksoftirqd/221:00:012
29521993832,4cyclictest25-21ksoftirqd/122:37:231
2952199381,34cyclictest19060-21egrep22:05:131
29520993834,3cyclictest9-21ksoftirqd/023:09:590
29520993833,2cyclictest9-21ksoftirqd/023:45:210
29520993832,3cyclictest23723-21sh22:14:590
292042380,1sleep00-21swapper/020:15:000
29522993731,4cyclictest33-21ksoftirqd/219:49:072
29521993731,4cyclictest25-21ksoftirqd/123:34:151
29521993731,4cyclictest25-21ksoftirqd/119:59:371
29521993731,4cyclictest25-21ksoftirqd/100:20:411
29521993729,5cyclictest25-21ksoftirqd/122:10:111
29520993732,3cyclictest9-21ksoftirqd/023:00:000
29520993732,3cyclictest9-21ksoftirqd/022:35:000
29520993732,2cyclictest9-21ksoftirqd/000:00:000
29520993731,3cyclictest9-21ksoftirqd/021:55:590
29520993731,3cyclictest9-21ksoftirqd/021:25:150
29523993631,2cyclictest41-21ksoftirqd/321:35:003
29523993630,4cyclictest41-21ksoftirqd/319:49:123
29523993630,4cyclictest41-21ksoftirqd/319:31:073
29522993631,3cyclictest33-21ksoftirqd/219:24:552
29522993630,4cyclictest33-21ksoftirqd/219:41:372
29521993630,4cyclictest25-21ksoftirqd/122:58:371
29521993630,4cyclictest25-21ksoftirqd/122:04:091
29521993629,5cyclictest25-21ksoftirqd/119:17:171
29520993632,2cyclictest9-21ksoftirqd/023:45:010
29520993632,2cyclictest29913-21irqrtprio23:30:190
29520993630,4cyclictest9-21ksoftirqd/021:03:180
29520993630,3cyclictest9-21ksoftirqd/022:50:010
29520993630,3cyclictest9-21ksoftirqd/021:50:000
29520993630,3cyclictest9-21ksoftirqd/000:35:190
29520993629,4cyclictest9-21ksoftirqd/020:04:590
29520993629,4cyclictest9-21ksoftirqd/000:02:300
29520993628,7cyclictest9-21ksoftirqd/021:34:590
29523993532,2cyclictest41-21ksoftirqd/321:30:003
29523993530,3cyclictest41-21ksoftirqd/321:40:323
29523993530,3cyclictest41-21ksoftirqd/320:35:193
29523993529,4cyclictest41-21ksoftirqd/322:15:473
29523993529,4cyclictest41-21ksoftirqd/321:18:183
29522993530,3cyclictest33-21ksoftirqd/219:40:002
29522993529,4cyclictest33-21ksoftirqd/222:50:442
29522993529,4cyclictest33-21ksoftirqd/220:51:292
29522993529,4cyclictest33-21ksoftirqd/219:25:412
2952299352,29cyclictest11740-21wc22:55:132
29521993529,4cyclictest25-21ksoftirqd/121:46:391
29521993529,4cyclictest25-21ksoftirqd/121:32:361
29521993529,4cyclictest25-21ksoftirqd/121:23:341
29521993529,4cyclictest25-21ksoftirqd/120:36:361
29521993529,4cyclictest25-21ksoftirqd/120:27:171
29521993529,4cyclictest25-21ksoftirqd/119:46:291
29520993530,3cyclictest9-21ksoftirqd/023:20:010
29520993530,3cyclictest9-21ksoftirqd/021:15:000
29520993530,3cyclictest9-21ksoftirqd/021:15:000
29520993530,3cyclictest9-21ksoftirqd/019:40:130
29520993529,4cyclictest9-21ksoftirqd/022:16:360
29520993529,3cyclictest9-21ksoftirqd/000:15:010
29523993429,3cyclictest41-21ksoftirqd/321:35:213
29523993429,3cyclictest41-21ksoftirqd/320:30:143
29523993429,2cyclictest41-21ksoftirqd/300:25:003
29523993428,4cyclictest41-21ksoftirqd/300:12:003
29523993428,4cyclictest41-21ksoftirqd/300:07:523
29523993428,3cyclictest41-21ksoftirqd/323:50:203
29522993429,3cyclictest33-21ksoftirqd/222:14:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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