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2026-09-22 - 13:06
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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 rackdslot3.osadl.org (updated Tue Sep 22, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491224161,51phc2sys0-21swapper/319:08:113
243812204170,22sleep10-21swapper/119:09:561
242632203169,23sleep20-21swapper/219:08:242
242612201168,22sleep00-21swapper/019:08:220
2475821800,6sleep02468199cyclictest23:40:010
1394918564,11phc2sys0-21swapper/319:10:003
2438828263,11sleep20-21swapper/219:10:012
24684996218,10cyclictest41-21ksoftirqd/320:55:003
24684995717,4cyclictest41-21ksoftirqd/322:15:263
24683995626,4cyclictest33-21ksoftirqd/223:55:172
24683995625,3cyclictest33-21ksoftirqd/220:45:272
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995424,3cyclictest33-21ksoftirqd/221:20:002
24683995424,3cyclictest33-21ksoftirqd/200:10:002
24683995422,5cyclictest33-21ksoftirqd/221:55:172
24683995422,3cyclictest33-21ksoftirqd/221:40:162
24683995328,7cyclictest33-21ksoftirqd/221:45:132
24683995320,4cyclictest33-21ksoftirqd/219:35:152
139391530,1ptp4l401ktimersoftd/300:01:143
139391530,1ptp4l401ktimersoftd/300:01:133
2468499528,11cyclictest41-21ksoftirqd/321:10:173
24684995220,10cyclictest41-21ksoftirqd/323:20:143
24683995122,4cyclictest33-21ksoftirqd/223:40:232
24683995120,3cyclictest33-21ksoftirqd/223:15:012
24684995020,7cyclictest41-21ksoftirqd/322:55:143
24683995020,3cyclictest33-21ksoftirqd/223:35:022
24684994919,4cyclictest41-21ksoftirqd/322:45:233
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24683994919,3cyclictest33-21ksoftirqd/222:55:162
24683994919,3cyclictest33-21ksoftirqd/220:40:222
24683994918,3cyclictest33-21ksoftirqd/221:25:192
24683994918,3cyclictest33-21ksoftirqd/200:15:202
164202490,2sleep00-21swapper/023:20:230
24683994818,3cyclictest33-21ksoftirqd/223:15:242
24684994717,3cyclictest41-21ksoftirqd/321:20:203
24683994720,4cyclictest33-21ksoftirqd/200:23:462
24683994719,3cyclictest33-21ksoftirqd/222:55:002
24683994718,3cyclictest33-21ksoftirqd/223:25:222
24683994718,3cyclictest33-21ksoftirqd/221:10:222
24683994715,2cyclictest33-21ksoftirqd/222:45:202
24684994634,4cyclictest41-21ksoftirqd/320:30:283
24684994627,7cyclictest41-21ksoftirqd/322:04:593
24683994619,4cyclictest33-21ksoftirqd/220:30:212
24683994618,3cyclictest33-21ksoftirqd/219:55:172
24683994615,3cyclictest33-21ksoftirqd/223:35:252
24683994614,4cyclictest33-21ksoftirqd/220:00:182
24684994538,3cyclictest15332-21sh21:05:003
2468499451,3cyclictest121rcu_preempt19:45:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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