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2025-12-18 - 21:10
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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 rack1slot3.osadl.org (updated Thu Dec 18, 2025 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2349687991310,2cyclictest0-21swapper/308:50:013
234968799130,11cyclictest0-21swapper/307:40:133
234968799120,11cyclictest0-21swapper/310:25:013
234968799120,11cyclictest0-21swapper/309:45:013
234968799120,11cyclictest0-21swapper/309:20:123
234968799120,11cyclictest0-21swapper/307:25:123
234968799120,0cyclictest0-21swapper/308:15:123
2349687991110,0cyclictest0-21swapper/309:45:133
2349687991110,0cyclictest0-21swapper/308:35:143
2349687991110,0cyclictest0-21swapper/308:30:113
2349687991110,0cyclictest0-21swapper/307:55:123
2349687991110,0cyclictest0-21swapper/307:50:123
234968799110,1cyclictest0-21swapper/308:55:113
234968799110,11cyclictest0-21swapper/308:25:013
234968799110,11cyclictest0-21swapper/307:35:183
234968799110,10cyclictest0-21swapper/310:15:113
234968799110,10cyclictest0-21swapper/309:19:563
234968799110,10cyclictest0-21swapper/308:00:163
234968799110,0cyclictest0-21swapper/311:50:143
234968799110,0cyclictest0-21swapper/311:50:023
234968799109,0cyclictest0-21swapper/310:45:003
234968799108,1cyclictest0-21swapper/310:50:123
2349687991010,0cyclictest0-21swapper/312:35:103
2349687991010,0cyclictest0-21swapper/311:35:183
2349687991010,0cyclictest0-21swapper/309:55:123
234968799100,9cyclictest0-21swapper/312:15:193
23496879999,0cyclictest0-21swapper/312:25:123
23496879999,0cyclictest0-21swapper/311:40:193
23496879999,0cyclictest0-21swapper/310:45:123
23496879999,0cyclictest0-21swapper/310:35:183
23496879998,0cyclictest0-21swapper/311:30:143
23496879998,0cyclictest0-21swapper/311:20:133
23496879998,0cyclictest0-21swapper/311:20:123
23496879998,0cyclictest0-21swapper/310:25:163
23496879998,0cyclictest0-21swapper/307:45:133
2348287291,5sleep30-21swapper/307:05:123
2435816280,0sleep20-21swapper/210:40:162
23496879988,0cyclictest26450irq/132-ahci[0000:00:17.0]11:05:153
23496879988,0cyclictest0-21swapper/309:00:123
23496879988,0cyclictest0-21swapper/308:15:003
23496879988,0cyclictest0-21swapper/308:10:003
23496879987,0cyclictest0-21swapper/309:05:163
23496879981,6cyclictest2432865-21taskset10:35:013
23496879980,7cyclictest0-21swapper/309:30:013
23496879977,0cyclictest0-21swapper/312:34:113
23496879977,0cyclictest0-21swapper/311:29:333
23496879977,0cyclictest0-21swapper/310:10:123
23496879977,0cyclictest0-21swapper/309:10:143
23496879977,0cyclictest0-21swapper/307:15:103
23496879976,0cyclictest0-21swapper/309:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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