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2025-09-13 - 06:35
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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 20 highest latencies:
System rackcslot8.osadl.org (updated Sat Sep 13, 2025 00:49:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
683799377178,1cyclictest151rcu_preempt23:05:265
329891333323,7phc2sys0-21swapper/219:05:2112
54322253245,6sleep10-21swapper/119:07:441
6890992270,186cyclictest0-21swapper/2419:55:1517
6890992270,186cyclictest0-21swapper/2419:55:1517
68909918211,123cyclictest0-21swapper/2423:35:1617
67589917430,143cyclictest0-21swapper/023:10:250
68909917011,118cyclictest0-21swapper/2400:25:0217
67589916927,93cyclictest0-21swapper/000:35:200
67589916926,138cyclictest0-21swapper/000:21:260
6829991676,155cyclictest0-21swapper/1200:36:034
68029916533,100cyclictest0-21swapper/723:07:5929
6829991616,147cyclictest0-21swapper/1200:25:224
6829991616,142cyclictest0-21swapper/1222:01:374
6829991616,126cyclictest0-21swapper/1222:45:584
6829991606,140cyclictest0-21swapper/1223:15:234
6829991606,140cyclictest0-21swapper/1223:05:154
6829991606,135cyclictest0-21swapper/1200:06:554
68029916029,101cyclictest0-21swapper/721:53:5229
67589916029,88cyclictest0-21swapper/022:54:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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