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2025-05-02 - 12:25
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackcslot8.osadl.org (updated Fri May 02, 2025 00:50:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482912750,266ptp4l0-21swapper/119:05:521
239019924749,196cyclictest151rcu_preempt00:00:2927
238759924050,168cyclictest151rcu_preempt23:34:330
239979915914,112cyclictest0-21swapper/2420:10:1917
2396899157156,1cyclictest112-21ksoftirqd/1622:12:318
2396899157156,1cyclictest112-21ksoftirqd/1622:12:318
239979915425,93cyclictest0-21swapper/2400:00:1717
23978991525,145cyclictest0-21swapper/1921:34:1711
23978991525,145cyclictest0-21swapper/1921:34:1711
239289915118,78cyclictest0-21swapper/919:35:0531
23978991505,124cyclictest0-21swapper/1923:42:3311
23978991505,124cyclictest0-21swapper/1922:58:0811
23978991495,110cyclictest0-21swapper/1922:37:0511
23978991495,110cyclictest0-21swapper/1922:37:0411
23978991495,109cyclictest0-21swapper/1923:15:1711
239289914918,84cyclictest0-21swapper/922:50:0031
23928991472,99cyclictest70-21ksoftirqd/923:06:5031
239979914663,68cyclictest0-21swapper/2423:00:1417
239349914624,121cyclictest0-21swapper/1019:20:012
239979914436,86cyclictest0-21swapper/2423:19:1017
239879914331,105cyclictest0-21swapper/2121:32:1114
239879914331,105cyclictest0-21swapper/2121:32:1014
23978991435,82cyclictest0-21swapper/1923:05:3711
23978991435,109cyclictest0-21swapper/1923:21:0711
239879914129,111cyclictest0-21swapper/2122:09:3514
239879914129,111cyclictest0-21swapper/2122:09:3514
23968991410,83cyclictest0-21swapper/1600:00:018
239979914067,48cyclictest0-21swapper/2421:29:5717
239979914067,48cyclictest0-21swapper/2421:29:5717
239879913929,76cyclictest0-21swapper/2123:00:2114
23997991380,84cyclictest0-21swapper/2422:19:5117
23997991380,84cyclictest0-21swapper/2422:19:5117
23968991380,86cyclictest0-21swapper/1621:57:338
23968991380,86cyclictest0-21swapper/1621:57:338
239979913753,83cyclictest0-21swapper/2420:15:3017
24018991360,83cyclictest0-21swapper/2921:46:3122
24018991360,83cyclictest0-21swapper/2921:46:3022
23997991360,81cyclictest0-21swapper/2422:00:2117
23997991360,81cyclictest0-21swapper/2422:00:2117
239879913639,52cyclictest0-21swapper/2122:58:1214
239879913625,77cyclictest0-21swapper/2123:45:3014
23928991357,75cyclictest0-21swapper/923:56:5531
239349913417,27cyclictest0-21swapper/1022:13:092
239349913417,27cyclictest0-21swapper/1022:13:092
239979913347,58cyclictest0-21swapper/2422:33:3317
239979913347,58cyclictest0-21swapper/2422:33:3317
239979913313,84cyclictest161-21ksoftirqd/2422:12:4217
239979913313,84cyclictest161-21ksoftirqd/2422:12:4217
239879913329,60cyclictest0-21swapper/2123:23:2014
23958991330,84cyclictest0-21swapper/1419:55:216
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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