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2025-12-02 - 15:26
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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 rackdslot0.osadl.org (updated Tue Dec 02, 2025 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273199250,19cyclictest0-21swapper/007:50:010
32731992414,5cyclictest0-21swapper/010:50:000
32731992311,7cyclictest0-21swapper/012:20:190
3273299224,17cyclictest0-21swapper/111:27:221
32732992214,4cyclictest0-21swapper/108:45:191
32731992213,4cyclictest0-21swapper/009:00:320
3273199220,4cyclictest0-21swapper/009:18:580
32733992121,0cyclictest0-21swapper/208:25:162
32733992118,2cyclictest573-21mii-tool08:05:192
32733992112,5cyclictest0-21swapper/210:05:182
3273399204,15cyclictest0-21swapper/208:52:572
32733992015,2cyclictest21923-21grep09:40:152
3273399200,17cyclictest32466-21cpuspeed_turbos11:55:142
32732992019,1cyclictest21-21ksoftirqd/109:22:451
32732992018,1cyclictest0-21swapper/109:50:221
32732992017,2cyclictest4581-21H212:26:331
3273399194,1cyclictest0-21swapper/209:18:522
3273399192,16cyclictest4581-21H212:26:332
32733991917,1cyclictest0-21swapper/211:44:132
32733991917,1cyclictest0-21swapper/207:30:162
32733991915,3cyclictest0-21swapper/207:15:012
3273399190,16cyclictest4536-21H212:26:332
3273299193,15cyclictest0-21swapper/111:45:171
32732991917,1cyclictest0-21swapper/112:11:201
32732991917,1cyclictest0-21swapper/108:30:171
3273299191,16cyclictest4534-21H212:26:331
3273299190,16cyclictest4593-21H212:26:331
3273299190,16cyclictest4593-21H212:26:331
3273299190,16cyclictest4581-21H212:26:331
3273299190,16cyclictest4528-21H212:26:331
3273199194,1cyclictest0-21swapper/008:12:500
3273199192,16cyclictest7296-21snapd07:41:490
32731991914,2cyclictest4538-21H212:26:330
3273199190,2cyclictest4532-21H212:26:330
3273199190,18cyclictest0-21swapper/010:08:560
3273399182,15cyclictest0-21swapper/209:12:112
32733991817,1cyclictest28-21ksoftirqd/207:56:282
32733991816,1cyclictest231162chrt11:35:442
32733991816,1cyclictest0-21swapper/212:24:202
32733991816,1cyclictest0-21swapper/210:40:532
32733991816,1cyclictest0-21swapper/209:37:232
32733991815,2cyclictest4536-21H212:26:332
32733991815,2cyclictest29995-21snapd12:01:532
32733991814,3cyclictest0-21swapper/210:39:572
3273399181,2cyclictest27989-21tr10:50:142
3273399181,16cyclictest10897-21nfsd407:25:192
3273399180,2cyclictest4581-21H212:26:332
3273399180,2cyclictest4581-21H212:26:332
3273399180,2cyclictest4526-21H212:26:332
3273399180,1cyclictest4532-21H212:26:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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