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2025-07-15 - 22:36
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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 rackdslot4.osadl.org (updated Tue Jul 15, 2025 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233072205171,22sleep10-21swapper/107:05:321
233082204171,22sleep20-21swapper/207:05:322
134791204170,22phc2sys0-21swapper/307:07:343
235502200165,23sleep00-21swapper/007:08:400
49752710,5sleep22395599cyclictest11:55:172
134991580,1ptp4l401ktimersoftd/311:22:253
253912570,4sleep09-21ksoftirqd/011:30:200
134991570,1ptp4l401ktimersoftd/308:30:063
42392550,2sleep10-21swapper/108:40:161
130691530,3getstats2395699cyclictest07:45:413
23956994919,4cyclictest41-21ksoftirqd/308:40:263
23956994843,3cyclictest13545-21awk08:59:593
23954994639,4cyclictest8604-21sh08:50:001
23956994533,10cyclictest41-21ksoftirqd/308:25:303
23956994417,7cyclictest41-21ksoftirqd/307:30:003
23955994426,16cyclictest33-21ksoftirqd/207:45:002
2395699437,8cyclictest41-21ksoftirqd/310:30:003
23956994332,9cyclictest41-21ksoftirqd/311:25:163
23956994331,10cyclictest41-21ksoftirqd/310:05:233
23956994315,7cyclictest41-21ksoftirqd/312:15:003
23956994315,3cyclictest41-21ksoftirqd/309:00:213
23955994336,5cyclictest11031-21cron09:59:592
23956994215,7cyclictest41-21ksoftirqd/312:00:013
23956994211,4cyclictest41-21ksoftirqd/309:25:143
134991420,0ptp4l401ktimersoftd/310:15:063
2395699419,4cyclictest41-21ksoftirqd/309:50:243
23956994121,2cyclictest41-21ksoftirqd/308:20:253
23956994111,3cyclictest41-21ksoftirqd/310:55:003
23956994110,4cyclictest41-21ksoftirqd/310:48:403
134991410,1ptp4l401ktimersoftd/312:33:193
134991410,1ptp4l401ktimersoftd/311:10:423
2395699407,8cyclictest41-21ksoftirqd/311:40:003
23956994014,3cyclictest41-21ksoftirqd/308:15:273
23956994013,9cyclictest41-21ksoftirqd/310:30:203
23955994022,15cyclictest33-21ksoftirqd/209:07:562
134991400,0ptp4l401ktimersoftd/310:03:483
23956993935,2cyclictest41-21ksoftirqd/307:45:013
23956993934,3cyclictest41-21ksoftirqd/310:25:003
23956993933,3cyclictest41-21ksoftirqd/312:15:233
23956993927,10cyclictest41-21ksoftirqd/311:10:013
2395699391,5cyclictest41-21ksoftirqd/310:55:403
2395699391,5cyclictest41-21ksoftirqd/310:55:403
2395699391,5cyclictest41-21ksoftirqd/307:31:323
2395699391,4cyclictest41-21ksoftirqd/311:47:363
2395699391,4cyclictest41-21ksoftirqd/311:47:353
23956993912,7cyclictest41-21ksoftirqd/311:30:173
23956993911,4cyclictest41-21ksoftirqd/309:45:163
23956993910,3cyclictest41-21ksoftirqd/312:00:163
2395699390,8cyclictest41-21ksoftirqd/312:40:003
2395699390,8cyclictest41-21ksoftirqd/312:40:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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