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2026-01-10 - 18:07
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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 Sat Jan 10, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491207173,22phc2sys0-21swapper/307:08:513
233932203170,22sleep10-21swapper/107:05:511
236672202169,22sleep20-21swapper/207:09:252
235162201168,22sleep00-21swapper/007:07:260
1243021390,3sleep22401599cyclictest07:50:242
139391700,1ptp4l401ktimersoftd/309:10:193
139391640,1ptp4l401ktimersoftd/308:10:163
289362590,2sleep30-21swapper/307:20:003
139391580,1ptp4l401ktimersoftd/310:09:153
310622550,3sleep10-21swapper/111:50:241
134491550,2getstats0-21swapper/307:15:223
24015995320,5cyclictest33-21ksoftirqd/211:45:012
24015995218,6cyclictest33-21ksoftirqd/208:05:002
139391520,1ptp4l401ktimersoftd/309:24:433
24015995029,3cyclictest33-21ksoftirqd/208:25:132
24015995020,4cyclictest33-21ksoftirqd/212:15:162
24015995020,4cyclictest33-21ksoftirqd/212:15:162
24015995017,10cyclictest33-21ksoftirqd/209:40:172
24015995013,6cyclictest33-21ksoftirqd/210:25:122
118272500,2sleep30-21swapper/311:10:233
24015994926,3cyclictest33-21ksoftirqd/208:05:252
24015994919,4cyclictest33-21ksoftirqd/210:05:262
24015994914,6cyclictest33-21ksoftirqd/211:05:012
225262490,2sleep10-21swapper/110:25:201
24015994818,3cyclictest33-21ksoftirqd/208:35:152
24015994810,4cyclictest33-21ksoftirqd/207:25:232
24015994718,4cyclictest33-21ksoftirqd/209:20:162
24015994717,4cyclictest33-21ksoftirqd/207:15:152
24015994617,3cyclictest33-21ksoftirqd/209:55:122
24014994638,5cyclictest551-21rs:main1
24015994519,6cyclictest33-21ksoftirqd/211:10:142
24015994518,6cyclictest33-21ksoftirqd/209:50:262
24015994518,6cyclictest33-21ksoftirqd/208:35:002
24015994513,9cyclictest33-21ksoftirqd/212:00:002
24015994513,3cyclictest33-21ksoftirqd/207:45:232
24015994432,9cyclictest33-21ksoftirqd/211:50:012
24015994417,7cyclictest33-21ksoftirqd/212:15:002
57898430,10rtkit-daemon0-21swapper/107:37:211
2401599438,6cyclictest33-21ksoftirqd/211:25:162
24015994331,10cyclictest33-21ksoftirqd/207:20:132
24015994314,3cyclictest33-21ksoftirqd/211:50:192
24015994313,5cyclictest33-21ksoftirqd/210:45:132
24015994312,3cyclictest33-21ksoftirqd/211:05:132
24015994311,5cyclictest33-21ksoftirqd/208:55:172
139391430,0ptp4l401ktimersoftd/308:05:153
57898420,9rtkit-daemon0-21swapper/108:02:311
2401599427,6cyclictest33-21ksoftirqd/212:34:592
24015994216,6cyclictest33-21ksoftirqd/209:35:002
24015994215,6cyclictest33-21ksoftirqd/212:20:222
24015994213,7cyclictest33-21ksoftirqd/207:30:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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